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 #include <linux/agp_backend.h> 36 #include <linux/cdev.h> 37 #include <linux/dma-mapping.h> 38 #include <linux/file.h> 39 #include <linux/fs.h> 40 #include <linux/highmem.h> 41 #include <linux/idr.h> 42 #include <linux/init.h> 43 #include <linux/io.h> 44 #include <linux/jiffies.h> 45 #include <linux/kernel.h> 46 #include <linux/kref.h> 47 #include <linux/miscdevice.h> 48 #include <linux/mm.h> 49 #include <linux/mutex.h> 50 #include <linux/pci.h> 51 #include <linux/platform_device.h> 52 #include <linux/poll.h> 53 #include <linux/ratelimit.h> 54 #include <linux/rbtree.h> 55 #include <linux/sched.h> 56 #include <linux/slab.h> 57 #include <linux/types.h> 58 #include <linux/vmalloc.h> 59 #include <linux/workqueue.h> 60 #include <linux/dma-fence.h> 61 62 #include <asm/mman.h> 63 #include <asm/pgalloc.h> 64 #include <linux/uaccess.h> 65 66 #include <uapi/drm/drm.h> 67 #include <uapi/drm/drm_mode.h> 68 69 #include <drm/drm_agpsupport.h> 70 #include <drm/drm_crtc.h> 71 #include <drm/drm_fourcc.h> 72 #include <drm/drm_global.h> 73 #include <drm/drm_hashtab.h> 74 #include <drm/drm_mem_util.h> 75 #include <drm/drm_mm.h> 76 #include <drm/drm_os_linux.h> 77 #include <drm/drm_sarea.h> 78 #include <drm/drm_vma_manager.h> 79 #include <drm/drm_drv.h> 80 81 #include <sys/conf.h> 82 #include <sys/device.h> 83 #include <sys/sysctl.h> 84 85 #include <vm/vm_extern.h> 86 #include <vm/vm_pager.h> 87 88 struct module; 89 90 struct drm_file; 91 struct drm_device; 92 struct drm_agp_head; 93 struct drm_local_map; 94 struct drm_device_dma; 95 struct drm_dma_handle; 96 struct drm_gem_object; 97 struct drm_master; 98 struct drm_vblank_crtc; 99 100 struct device_node; 101 struct videomode; 102 struct reservation_object; 103 struct dma_buf_attachment; 104 105 /* 106 * The following categories are defined: 107 * 108 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ... 109 * This is the category used by the DRM_DEBUG() macro. 110 * 111 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ... 112 * This is the category used by the DRM_DEBUG_DRIVER() macro. 113 * 114 * KMS: used in the modesetting code. 115 * This is the category used by the DRM_DEBUG_KMS() macro. 116 * 117 * PRIME: used in the prime code. 118 * This is the category used by the DRM_DEBUG_PRIME() macro. 119 * 120 * ATOMIC: used in the atomic code. 121 * This is the category used by the DRM_DEBUG_ATOMIC() macro. 122 * 123 * VBL: used for verbose debug message in the vblank code 124 * This is the category used by the DRM_DEBUG_VBL() macro. 125 * 126 * DragonFly-specific categories: 127 * 128 * PID: used as modifier to include PID number in messages. 129 * This is the category used by the all debug macros. 130 * 131 * FIOCTL: used in failed ioctl debugging. 132 * This is the category used by the DRM_DEBUG_FIOCTL() macro. 133 * 134 * IOCTL: used in ioctl debugging. 135 * This is the category used by the DRM_DEBUG_IOCTL() macro. 136 * 137 * Enabling verbose debug messages is done through the drm.debug parameter, 138 * each category being enabled by a bit. 139 * 140 * drm.debug=0x1 will enable CORE messages 141 * drm.debug=0x2 will enable DRIVER messages 142 * drm.debug=0x3 will enable CORE and DRIVER messages 143 * ... 144 * drm.debug=0x3f will enable all messages 145 * 146 * An interesting feature is that it's possible to enable verbose logging at 147 * run-time by using the hw.drm.debug sysctl variable: 148 * # sysctl hw.drm.debug=0xfff 149 */ 150 #define DRM_UT_NONE 0x00 151 #define DRM_UT_CORE 0x01 152 #define DRM_UT_DRIVER 0x02 153 #define DRM_UT_KMS 0x04 154 #define DRM_UT_PRIME 0x08 155 #define DRM_UT_ATOMIC 0x10 156 #define DRM_UT_VBL 0x20 157 #define DRM_UT_STATE 0x40 158 /* Extra DragonFly debug categories */ 159 #ifdef __DragonFly__ 160 #define DRM_UT_RES8 0x80 /* reserved for future expansion */ 161 #define DRM_UT_PID 0x100 162 #define DRM_UT_FIOCTL 0x200 163 #define DRM_UT_IOCTL 0x400 164 #endif 165 166 extern __printflike(2, 3) 167 void drm_ut_debug_printk(const char *function_name, 168 const char *format, ...); 169 extern __printflike(2, 3) 170 void drm_err(const char *func, const char *format, ...); 171 172 /***********************************************************************/ 173 /** \name DRM template customization defaults */ 174 /*@{*/ 175 176 /***********************************************************************/ 177 /** \name Macros to make printk easier */ 178 /*@{*/ 179 180 #define _DRM_PRINTK(once, level, fmt, ...) \ 181 do { \ 182 printk##once(KERN_##level "[" DRM_NAME "] " fmt, \ 183 ##__VA_ARGS__); \ 184 } while (0) 185 186 #define DRM_INFO(fmt, ...) \ 187 _DRM_PRINTK(, INFO, fmt, ##__VA_ARGS__) 188 #define DRM_NOTE(fmt, ...) \ 189 _DRM_PRINTK(, NOTICE, fmt, ##__VA_ARGS__) 190 #define DRM_WARN(fmt, ...) \ 191 _DRM_PRINTK(, WARNING, fmt, ##__VA_ARGS__) 192 193 #define DRM_INFO_ONCE(fmt, ...) \ 194 _DRM_PRINTK(_once, INFO, fmt, ##__VA_ARGS__) 195 #define DRM_NOTE_ONCE(fmt, ...) \ 196 _DRM_PRINTK(_once, NOTICE, fmt, ##__VA_ARGS__) 197 #define DRM_WARN_ONCE(fmt, ...) \ 198 _DRM_PRINTK(_once, WARNING, fmt, ##__VA_ARGS__) 199 200 /** 201 * Error output. 202 * 203 * \param fmt printf() like format string. 204 * \param arg arguments 205 */ 206 #define DRM_DEV_ERROR(dev, fmt, ...) \ 207 drm_dev_printk(dev, KERN_ERR, DRM_UT_NONE, __func__, " *ERROR*",\ 208 fmt, ##__VA_ARGS__) 209 #define DRM_ERROR(fmt, ...) \ 210 drm_printk(KERN_ERR, DRM_UT_NONE, fmt, ##__VA_ARGS__) 211 212 /** 213 * Rate limited error output. Like DRM_ERROR() but won't flood the log. 214 * 215 * \param fmt printf() like format string. 216 * \param arg arguments 217 */ 218 #define DRM_DEV_ERROR_RATELIMITED(dev, fmt, ...) \ 219 ({ \ 220 static DEFINE_RATELIMIT_STATE(_rs, \ 221 DEFAULT_RATELIMIT_INTERVAL, \ 222 DEFAULT_RATELIMIT_BURST); \ 223 \ 224 if (__ratelimit(&_rs)) \ 225 DRM_DEV_ERROR(dev, fmt, ##__VA_ARGS__); \ 226 }) 227 #define DRM_ERROR_RATELIMITED(fmt, ...) \ 228 DRM_DEV_ERROR_RATELIMITED(NULL, fmt, ##__VA_ARGS__) 229 230 #define DRM_DEV_INFO(dev, fmt, ...) \ 231 drm_dev_printk(dev, KERN_INFO, DRM_UT_NONE, __func__, "", fmt, \ 232 ##__VA_ARGS__) 233 234 #define DRM_DEV_INFO_ONCE(dev, fmt, ...) \ 235 ({ \ 236 static bool __print_once __read_mostly; \ 237 if (!__print_once) { \ 238 __print_once = true; \ 239 DRM_DEV_INFO(dev, fmt, ##__VA_ARGS__); \ 240 } \ 241 }) 242 243 /** 244 * Debug output. 245 * 246 * \param fmt printf() like format string. 247 * \param arg arguments 248 */ 249 #define DRM_DEV_DEBUG(dev, fmt, args...) \ 250 drm_dev_printk(dev, KERN_DEBUG, DRM_UT_CORE, __func__, "", fmt, \ 251 ##args) 252 #define DRM_DEBUG(fmt, args...) \ 253 do { \ 254 if (unlikely(drm_debug & DRM_UT_CORE)) \ 255 drm_ut_debug_printk(__func__, fmt, ##args); \ 256 } while (0) 257 258 #define DRM_DEV_DEBUG_DRIVER(dev, fmt, args...) \ 259 drm_dev_printk(dev, KERN_DEBUG, DRM_UT_DRIVER, __func__, "", \ 260 fmt, ##args) 261 #define DRM_DEBUG_DRIVER(fmt, args...) \ 262 do { \ 263 if (unlikely(drm_debug & DRM_UT_DRIVER)) \ 264 drm_ut_debug_printk(__func__, fmt, ##args); \ 265 } while (0) 266 267 #define DRM_DEV_DEBUG_KMS(dev, fmt, args...) \ 268 drm_dev_printk(dev, KERN_DEBUG, DRM_UT_KMS, __func__, "", fmt, \ 269 ##args) 270 #define DRM_DEBUG_KMS(fmt, args...) \ 271 do { \ 272 if (unlikely(drm_debug & DRM_UT_KMS)) \ 273 drm_ut_debug_printk(__func__, fmt, ##args); \ 274 } while (0) 275 276 #define DRM_DEV_DEBUG_PRIME(dev, fmt, args...) \ 277 drm_dev_printk(dev, KERN_DEBUG, DRM_UT_PRIME, __func__, "", \ 278 fmt, ##args) 279 #define DRM_DEBUG_PRIME(fmt, args...) \ 280 do { \ 281 if (unlikely(drm_debug & DRM_UT_PRIME)) \ 282 drm_ut_debug_printk(__func__, fmt, ##args); \ 283 } while (0) 284 285 #define DRM_DEV_DEBUG_ATOMIC(dev, fmt, args...) \ 286 drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ATOMIC, __func__, "", \ 287 fmt, ##args) 288 #define DRM_DEBUG_ATOMIC(fmt, args...) \ 289 do { \ 290 if (unlikely(drm_debug & DRM_UT_ATOMIC)) \ 291 drm_ut_debug_printk(__func__, fmt, ##args); \ 292 } while (0) 293 294 #define DRM_DEV_DEBUG_VBL(dev, fmt, args...) \ 295 drm_dev_printk(dev, KERN_DEBUG, DRM_UT_VBL, __func__, "", fmt, \ 296 ##args) 297 #define DRM_DEBUG_VBL(fmt, args...) \ 298 do { \ 299 if (unlikely(drm_debug & DRM_UT_VBL)) \ 300 drm_ut_debug_printk(__func__, fmt, ##args); \ 301 } while (0) 302 303 #ifdef __DragonFly__ 304 #define DRM_DEBUG_FIOCTL(fmt, args...) \ 305 do { \ 306 if (unlikely(drm_debug & DRM_UT_FIOCTL)) \ 307 drm_ut_debug_printk(__func__, fmt, ##args); \ 308 } while (0) 309 #define DRM_DEBUG_IOCTL(fmt, args...) \ 310 do { \ 311 if (unlikely(drm_debug & DRM_UT_IOCTL)) \ 312 drm_ut_debug_printk(__func__, fmt, ##args); \ 313 } while (0) 314 #define DRM_DEBUG_VBLANK DRM_DEBUG_VBL 315 #endif /* __DragonFly__ */ 316 317 #define _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, level, fmt, args...) \ 318 ({ \ 319 static DEFINE_RATELIMIT_STATE(_rs, \ 320 DEFAULT_RATELIMIT_INTERVAL, \ 321 DEFAULT_RATELIMIT_BURST); \ 322 if (__ratelimit(&_rs)) \ 323 drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ ## level, \ 324 __func__, "", fmt, ##args); \ 325 }) 326 327 /** 328 * Rate limited debug output. Like DRM_DEBUG() but won't flood the log. 329 * 330 * \param fmt printf() like format string. 331 * \param arg arguments 332 */ 333 #define DRM_DEV_DEBUG_RATELIMITED(dev, fmt, args...) \ 334 DEV__DRM_DEFINE_DEBUG_RATELIMITED(dev, CORE, fmt, ##args) 335 #define DRM_DEBUG_RATELIMITED(fmt, args...) \ 336 DRM_DEV_DEBUG_RATELIMITED(NULL, fmt, ##args) 337 #define DRM_DEV_DEBUG_DRIVER_RATELIMITED(dev, fmt, args...) \ 338 _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, DRIVER, fmt, ##args) 339 #define DRM_DEBUG_DRIVER_RATELIMITED(fmt, args...) \ 340 DRM_DEV_DEBUG_DRIVER_RATELIMITED(NULL, fmt, ##args) 341 #define DRM_DEV_DEBUG_KMS_RATELIMITED(dev, fmt, args...) \ 342 _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, KMS, fmt, ##args) 343 #define DRM_DEBUG_KMS_RATELIMITED(fmt, args...) \ 344 DRM_DEV_DEBUG_KMS_RATELIMITED(NULL, fmt, ##args) 345 #define DRM_DEV_DEBUG_PRIME_RATELIMITED(dev, fmt, args...) \ 346 _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, PRIME, fmt, ##args) 347 #define DRM_DEBUG_PRIME_RATELIMITED(fmt, args...) \ 348 DRM_DEV_DEBUG_PRIME_RATELIMITED(NULL, fmt, ##args) 349 350 /* Format strings and argument splitters to simplify printing 351 * various "complex" objects 352 */ 353 #define DRM_MODE_FMT "%d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x" 354 #define DRM_MODE_ARG(m) \ 355 (m)->base.id, (m)->name, (m)->vrefresh, (m)->clock, \ 356 (m)->hdisplay, (m)->hsync_start, (m)->hsync_end, (m)->htotal, \ 357 (m)->vdisplay, (m)->vsync_start, (m)->vsync_end, (m)->vtotal, \ 358 (m)->type, (m)->flags 359 360 #define DRM_RECT_FMT "%dx%d%+d%+d" 361 #define DRM_RECT_ARG(r) drm_rect_width(r), drm_rect_height(r), (r)->x1, (r)->y1 362 363 /* for rect's in fixed-point format: */ 364 #define DRM_RECT_FP_FMT "%d.%06ux%d.%06u%+d.%06u%+d.%06u" 365 #define DRM_RECT_FP_ARG(r) \ 366 drm_rect_width(r) >> 16, ((drm_rect_width(r) & 0xffff) * 15625) >> 10, \ 367 drm_rect_height(r) >> 16, ((drm_rect_height(r) & 0xffff) * 15625) >> 10, \ 368 (r)->x1 >> 16, (((r)->x1 & 0xffff) * 15625) >> 10, \ 369 (r)->y1 >> 16, (((r)->y1 & 0xffff) * 15625) >> 10 370 371 /*@}*/ 372 373 /***********************************************************************/ 374 /** \name Internal types and structures */ 375 /*@{*/ 376 377 #define DRM_IF_VERSION(maj, min) (maj << 16 | min) 378 379 #define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) 380 #define DRM_DEV_UID UID_ROOT 381 #define DRM_DEV_GID GID_WHEEL 382 383 #define DRM_CURPROC curthread 384 #define DRM_STRUCTPROC struct thread 385 #define DRM_LOCK(dev) lockmgr(&(dev)->struct_mutex, LK_EXCLUSIVE) 386 #define DRM_UNLOCK(dev) lockmgr(&(dev)->struct_mutex, LK_RELEASE) 387 388 #define DRM_SYSCTL_HANDLER_ARGS (SYSCTL_HANDLER_ARGS) 389 390 #define drm_get_device_from_kdev(_kdev) (_kdev->si_drv1) 391 392 int vm_phys_fictitious_reg_range(vm_paddr_t start, vm_paddr_t end, 393 vm_memattr_t memattr); 394 void vm_phys_fictitious_unreg_range(vm_paddr_t start, vm_paddr_t end); 395 vm_page_t vm_phys_fictitious_to_vm_page(vm_paddr_t pa); 396 397 /** 398 * Ioctl function type. 399 * 400 * \param inode device inode. 401 * \param file_priv DRM file private pointer. 402 * \param cmd command. 403 * \param arg argument. 404 */ 405 typedef int drm_ioctl_t(struct drm_device *dev, void *data, 406 struct drm_file *file_priv); 407 408 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd, 409 unsigned long arg); 410 411 #define DRM_IOCTL_NR(n) ((n) & 0xff) 412 #define DRM_MAJOR 226 413 414 #define DRM_AUTH 0x1 415 #define DRM_MASTER 0x2 416 #define DRM_ROOT_ONLY 0x4 417 #define DRM_CONTROL_ALLOW 0x8 418 #define DRM_UNLOCKED 0x10 419 #define DRM_RENDER_ALLOW 0x20 420 421 struct drm_ioctl_desc { 422 unsigned int cmd; 423 int flags; 424 drm_ioctl_t *func; 425 const char *name; 426 }; 427 428 /** 429 * Creates a driver or general drm_ioctl_desc array entry for the given 430 * ioctl, for use by drm_ioctl(). 431 */ 432 433 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ 434 [DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = { \ 435 .cmd = DRM_IOCTL_##ioctl, \ 436 .func = _func, \ 437 .flags = _flags, \ 438 .name = #ioctl \ 439 } 440 441 /* Event queued up for userspace to read */ 442 struct drm_pending_event { 443 struct completion *completion; 444 void (*completion_release)(struct completion *completion); 445 struct drm_event *event; 446 struct dma_fence *fence; 447 struct list_head link; 448 struct list_head pending_link; 449 struct drm_file *file_priv; 450 pid_t pid; /* pid of requester, no guarantee it's valid by the time 451 we deliver the event, for tracing only */ 452 }; 453 454 struct drm_prime_file_private { 455 struct lock lock; 456 struct rb_root dmabufs; 457 struct rb_root handles; 458 }; 459 460 /** File private data */ 461 struct drm_file { 462 unsigned authenticated :1; 463 /* true when the client has asked us to expose stereo 3D mode flags */ 464 unsigned stereo_allowed :1; 465 /* 466 * true if client understands CRTC primary planes and cursor planes 467 * in the plane list 468 */ 469 unsigned universal_planes:1; 470 /* true if client understands atomic properties */ 471 unsigned atomic:1; 472 /* 473 * This client is the creator of @master. 474 * Protected by struct drm_device::master_mutex. 475 */ 476 unsigned is_master:1; 477 478 pid_t pid; 479 drm_magic_t magic; 480 struct list_head lhead; 481 struct drm_minor *minor; 482 unsigned long lock_count; 483 484 /** Mapping of mm object handles to object pointers. */ 485 struct idr object_idr; 486 /** Lock for synchronization of access to object_idr. */ 487 spinlock_t table_lock; 488 489 struct file *filp; 490 void *driver_priv; 491 492 struct drm_master *master; /* master this node is currently associated with 493 N.B. not always dev->master */ 494 /** 495 * fbs - List of framebuffers associated with this file. 496 * 497 * Protected by fbs_lock. Note that the fbs list holds a reference on 498 * the fb object to prevent it from untimely disappearing. 499 */ 500 struct list_head fbs; 501 struct lock fbs_lock; 502 503 /** User-created blob properties; this retains a reference on the 504 * property. */ 505 struct list_head blobs; 506 507 wait_queue_head_t event_wait; 508 struct list_head pending_event_list; 509 struct list_head event_list; 510 int event_space; 511 512 struct lock event_read_lock; 513 514 struct drm_prime_file_private prime; 515 516 #ifdef __DragonFly__ 517 struct drm_device *dev; 518 unsigned long ioctl_count; 519 struct kqinfo dkq; 520 #endif 521 }; 522 523 /** 524 * Lock data. 525 */ 526 struct drm_lock_data { 527 struct drm_hw_lock *hw_lock; /**< Hardware lock */ 528 /** Private of lock holder's file (NULL=kernel) */ 529 struct drm_file *file_priv; 530 wait_queue_head_t lock_queue; /**< Queue of blocked processes */ 531 unsigned long lock_time; /**< Time of last lock in jiffies */ 532 spinlock_t spinlock; 533 uint32_t kernel_waiters; 534 uint32_t user_waiters; 535 int idle_has_lock; 536 }; 537 538 /** 539 * GEM specific mm private for tracking GEM objects 540 */ 541 struct drm_gem_mm { 542 struct drm_vma_offset_manager vma_manager; 543 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */ 544 struct drm_open_hash offset_hash; /**< User token hash table for maps */ 545 struct unrhdr *idxunr; 546 }; 547 548 /* Flags and return codes for get_vblank_timestamp() driver function. */ 549 #define DRM_CALLED_FROM_VBLIRQ 1 550 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0) 551 #define DRM_VBLANKTIME_IN_VBLANK (1 << 1) 552 553 /* get_scanout_position() return flags */ 554 #define DRM_SCANOUTPOS_VALID (1 << 0) 555 #define DRM_SCANOUTPOS_IN_VBLANK (1 << 1) 556 #define DRM_SCANOUTPOS_ACCURATE (1 << 2) 557 558 enum drm_minor_type { 559 DRM_MINOR_PRIMARY, 560 DRM_MINOR_CONTROL, 561 DRM_MINOR_RENDER, 562 DRM_MINOR_CNT, 563 }; 564 565 /** 566 * Info file list entry. This structure represents a debugfs or proc file to 567 * be created by the drm core 568 */ 569 struct drm_info_list { 570 const char *name; /** file name */ 571 int (*show)(struct seq_file*, void*); /** show callback */ 572 u32 driver_features; /**< Required driver features for this entry */ 573 void *data; 574 }; 575 576 /** 577 * debugfs node structure. This structure represents a debugfs file. 578 */ 579 struct drm_info_node { 580 struct list_head list; 581 struct drm_minor *minor; 582 const struct drm_info_list *info_ent; 583 struct dentry *dent; 584 }; 585 586 /** 587 * DRM minor structure. This structure represents a drm minor number. 588 */ 589 struct drm_minor { 590 int index; /**< Minor device number */ 591 int type; /**< Control or render */ 592 struct device *kdev; /**< Linux device */ 593 struct drm_device *dev; 594 595 struct dentry *debugfs_root; 596 597 struct list_head debugfs_list; 598 struct lock debugfs_lock; /* Protects debugfs_list. */ 599 }; 600 601 struct drm_sysctl_info { 602 struct sysctl_ctx_list ctx; 603 char name[2]; 604 }; 605 606 /* Length for the array of resource pointers for drm_get_resource_*. */ 607 #define DRM_MAX_PCI_RESOURCE 6 608 609 /** 610 * DRM device structure. This structure represent a complete card that 611 * may contain multiple heads. 612 */ 613 struct drm_device { 614 struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */ 615 int if_version; /**< Highest interface version set */ 616 617 /** \name Lifetime Management */ 618 /*@{ */ 619 struct kref ref; /**< Object ref-count */ 620 struct device *dev; /**< Device structure of bus-device */ 621 struct drm_driver *driver; /**< DRM driver managing the device */ 622 void *dev_private; /**< DRM driver private data */ 623 struct drm_minor *control; /**< Control node */ 624 struct drm_minor *primary; /**< Primary node */ 625 struct drm_minor *render; /**< Render node */ 626 bool registered; 627 628 /* currently active master for this device. Protected by master_mutex */ 629 struct drm_master *master; 630 631 atomic_t unplugged; /**< Flag whether dev is dead */ 632 struct inode *anon_inode; /**< inode for private address-space */ 633 char *unique; /**< unique name of the device */ 634 /*@} */ 635 636 /** \name Locks */ 637 /*@{ */ 638 struct lock struct_mutex; /**< For others */ 639 struct lock master_mutex; /**< For drm_minor::master and drm_file::is_master */ 640 /*@} */ 641 642 /** \name Usage Counters */ 643 /*@{ */ 644 int open_count; /**< Outstanding files open, protected by drm_global_mutex. */ 645 spinlock_t buf_lock; /**< For drm_device::buf_use and a few other things. */ 646 int buf_use; /**< Buffers in use -- cannot alloc */ 647 atomic_t buf_alloc; /**< Buffer allocation in progress */ 648 /*@} */ 649 650 struct lock filelist_mutex; 651 struct list_head filelist; 652 653 /** \name Memory management */ 654 /*@{ */ 655 struct list_head maplist; /**< Linked list of regions */ 656 struct drm_open_hash map_hash; /**< User token hash table for maps */ 657 658 /** \name Context handle management */ 659 /*@{ */ 660 struct list_head ctxlist; /**< Linked list of context handles */ 661 struct lock ctxlist_mutex; /**< For ctxlist */ 662 663 struct idr ctx_idr; 664 665 struct list_head vmalist; /**< List of vmas (for debugging) */ 666 667 /*@} */ 668 669 /** \name DMA support */ 670 /*@{ */ 671 struct drm_device_dma *dma; /**< Optional pointer for DMA support */ 672 /*@} */ 673 674 /** \name Context support */ 675 /*@{ */ 676 677 __volatile__ long context_flag; /**< Context swapping flag */ 678 int last_context; /**< Last current context */ 679 /*@} */ 680 681 /** \name VBLANK IRQ support */ 682 /*@{ */ 683 bool irq_enabled; 684 int irq; 685 686 /* 687 * If true, vblank interrupt will be disabled immediately when the 688 * refcount drops to zero, as opposed to via the vblank disable 689 * timer. 690 * This can be set to true it the hardware has a working vblank 691 * counter and the driver uses drm_vblank_on() and drm_vblank_off() 692 * appropriately. 693 */ 694 bool vblank_disable_immediate; 695 696 /* array of size num_crtcs */ 697 struct drm_vblank_crtc *vblank; 698 699 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ 700 spinlock_t vbl_lock; 701 702 u32 max_vblank_count; /**< size of vblank counter register */ 703 704 /** 705 * List of events 706 */ 707 struct list_head vblank_event_list; 708 spinlock_t event_lock; 709 710 /*@} */ 711 712 struct drm_agp_head *agp; /**< AGP data */ 713 714 struct pci_dev *pdev; /**< PCI device structure */ 715 #ifdef __alpha__ 716 struct pci_controller *hose; 717 #endif 718 719 struct platform_device *platformdev; /**< Platform device struture */ 720 struct virtio_device *virtdev; 721 722 struct drm_sg_mem *sg; /**< Scatter gather memory */ 723 unsigned int num_crtcs; /**< Number of CRTCs on this device */ 724 725 struct { 726 int context; 727 struct drm_hw_lock *lock; 728 } sigdata; 729 730 struct drm_local_map *agp_buffer_map; 731 unsigned int agp_buffer_token; 732 733 struct drm_mode_config mode_config; /**< Current mode config */ 734 735 /** \name GEM information */ 736 /*@{ */ 737 struct lock object_name_lock; 738 struct idr object_name_idr; 739 struct drm_vma_offset_manager *vma_offset_manager; 740 /*@} */ 741 int switch_power_state; 742 #ifdef __DragonFly__ 743 /* Storage of resource pointers for drm_get_resource_* */ 744 struct resource *pcir[DRM_MAX_PCI_RESOURCE]; 745 int pcirid[DRM_MAX_PCI_RESOURCE]; 746 747 int pci_domain; 748 int pci_bus; 749 int pci_slot; 750 int pci_func; 751 char busid_str[128]; 752 int modesetting; 753 void *mm_private; 754 struct drm_sysctl_info *sysctl; 755 756 struct idr magic_map; 757 758 int unique_len; /* Length of unique field */ 759 struct cdev *devnode; /* Device number for mknod */ 760 761 struct lwkt_serialize irq_lock; /* protects irq condition checks */ 762 763 struct sigio *buf_sigio; /* Processes waiting for SIGIO */ 764 void *drm_ttm_bdev; 765 766 struct drm_lock_data lock; /* Information on hardware lock */ 767 #endif 768 }; 769 770 #include <drm/drm_irq.h> 771 772 #define DRM_SWITCH_POWER_ON 0 773 #define DRM_SWITCH_POWER_OFF 1 774 #define DRM_SWITCH_POWER_CHANGING 2 775 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3 776 777 static __inline__ int drm_core_check_feature(struct drm_device *dev, 778 int feature) 779 { 780 return ((dev->driver->driver_features & feature) ? 1 : 0); 781 } 782 783 static inline void drm_device_set_unplugged(struct drm_device *dev) 784 { 785 smp_wmb(); 786 atomic_set(&dev->unplugged, 1); 787 } 788 789 static inline int drm_device_is_unplugged(struct drm_device *dev) 790 { 791 int ret = atomic_read(&dev->unplugged); 792 smp_rmb(); 793 return ret; 794 } 795 796 static inline bool drm_is_render_client(const struct drm_file *file_priv) 797 { 798 return file_priv->minor->type == DRM_MINOR_RENDER; 799 } 800 801 static inline bool drm_is_control_client(const struct drm_file *file_priv) 802 { 803 return file_priv->minor->type == DRM_MINOR_CONTROL; 804 } 805 806 static inline bool drm_is_primary_client(const struct drm_file *file_priv) 807 { 808 return file_priv->minor->type == DRM_MINOR_PRIMARY; 809 } 810 811 /******************************************************************/ 812 /** \name Internal function definitions */ 813 /*@{*/ 814 815 /* Driver support (drm_drv.h) */ 816 extern int drm_ioctl_permit(u32 flags, struct drm_file *file_priv); 817 int drm_create_cdevs(device_t kdev); 818 d_ioctl_t drm_ioctl; 819 #ifdef CONFIG_COMPAT 820 extern long drm_compat_ioctl(struct file *filp, 821 unsigned int cmd, unsigned long arg); 822 #else 823 /* Let drm_compat_ioctl be assigned to .compat_ioctl unconditionally */ 824 #define drm_compat_ioctl NULL 825 #endif 826 extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags); 827 828 /* File Operations (drm_fops.c) */ 829 d_open_t drm_open; 830 d_close_t drm_close; 831 d_read_t drm_read; 832 int drm_release(struct inode *inode, struct file *filp); 833 834 /* DragonFly driver framework */ 835 #ifdef __DragonFly__ 836 d_kqfilter_t drm_kqfilter; 837 d_mmap_t drm_mmap; 838 d_mmap_single_t drm_mmap_single; 839 840 int drm_device_detach(device_t kdev); 841 842 void drm_cdevpriv_dtor(void *cd); 843 844 int drm_add_busid_modesetting(struct drm_device *dev, 845 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 846 #endif 847 848 unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait); 849 int drm_event_reserve_init_locked(struct drm_device *dev, 850 struct drm_file *file_priv, 851 struct drm_pending_event *p, 852 struct drm_event *e); 853 int drm_event_reserve_init(struct drm_device *dev, 854 struct drm_file *file_priv, 855 struct drm_pending_event *p, 856 struct drm_event *e); 857 void drm_event_cancel_free(struct drm_device *dev, 858 struct drm_pending_event *p); 859 void drm_send_event_locked(struct drm_device *dev, struct drm_pending_event *e); 860 void drm_send_event(struct drm_device *dev, struct drm_pending_event *e); 861 862 /* Misc. IOCTL support (drm_ioctl.c) */ 863 int drm_noop(struct drm_device *dev, void *data, 864 struct drm_file *file_priv); 865 int drm_invalid_op(struct drm_device *dev, void *data, 866 struct drm_file *file_priv); 867 868 /* Cache management (drm_cache.c) */ 869 void drm_clflush_pages(struct page *pages[], unsigned long num_pages); 870 void drm_clflush_sg(struct sg_table *st); 871 void drm_clflush_virt_range(void *addr, unsigned long length); 872 873 /* 874 * These are exported to drivers so that they can implement fencing using 875 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. 876 */ 877 878 /* Debugfs support */ 879 #if defined(CONFIG_DEBUG_FS) 880 extern int drm_debugfs_create_files(const struct drm_info_list *files, 881 int count, struct dentry *root, 882 struct drm_minor *minor); 883 extern int drm_debugfs_remove_files(const struct drm_info_list *files, 884 int count, struct drm_minor *minor); 885 #else 886 static inline int drm_debugfs_create_files(const struct drm_info_list *files, 887 int count, struct dentry *root, 888 struct drm_minor *minor) 889 { 890 return 0; 891 } 892 893 static inline int drm_debugfs_remove_files(const struct drm_info_list *files, 894 int count, struct drm_minor *minor) 895 { 896 return 0; 897 } 898 #endif 899 900 struct dma_buf_export_info; 901 902 extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev, 903 struct drm_gem_object *obj, 904 int flags); 905 extern int drm_gem_prime_handle_to_fd(struct drm_device *dev, 906 struct drm_file *file_priv, uint32_t handle, uint32_t flags, 907 int *prime_fd); 908 extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev, 909 struct dma_buf *dma_buf); 910 extern int drm_gem_prime_fd_to_handle(struct drm_device *dev, 911 struct drm_file *file_priv, int prime_fd, uint32_t *handle); 912 struct dma_buf *drm_gem_dmabuf_export(struct drm_device *dev, 913 struct dma_buf_export_info *exp_info); 914 extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf); 915 916 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages, 917 dma_addr_t *addrs, int max_pages); 918 extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages); 919 extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg); 920 921 922 extern struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size, 923 size_t align); 924 extern void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah); 925 926 /* sysfs support (drm_sysfs.c) */ 927 extern void drm_sysfs_hotplug_event(struct drm_device *dev); 928 929 930 /* XXX glue logic, should be done in drm_pci_init(), pending drm update */ 931 void drm_init_pdev(device_t dev, struct pci_dev **pdev); 932 void drm_fini_pdev(struct pci_dev **pdev); 933 void drm_print_pdev(struct pci_dev *pdev); 934 935 int drm_dev_set_unique(struct drm_device *dev, const char *name); 936 937 /*@}*/ 938 939 /* PCI section */ 940 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev) 941 { 942 if (dev->driver->device_is_agp != NULL) { 943 int err = (*dev->driver->device_is_agp) (dev); 944 945 if (err != 2) { 946 return err; 947 } 948 } 949 950 return (pci_find_extcap(dev->pdev->dev.bsddev, PCIY_AGP, NULL) == 0); 951 } 952 void drm_pci_agp_destroy(struct drm_device *dev); 953 954 extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver); 955 extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver); 956 #ifdef CONFIG_PCI 957 extern int drm_get_pci_dev(struct pci_dev *pdev, 958 const struct pci_device_id *ent, 959 struct drm_driver *driver); 960 extern int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master); 961 #else 962 static inline int drm_get_pci_dev(struct pci_dev *pdev, 963 const struct pci_device_id *ent, 964 struct drm_driver *driver) 965 { 966 return -ENOSYS; 967 } 968 969 static inline int drm_pci_set_busid(struct drm_device *dev, 970 struct drm_master *master) 971 { 972 return -ENOSYS; 973 } 974 #endif 975 976 #define DRM_PCIE_SPEED_25 1 977 #define DRM_PCIE_SPEED_50 2 978 #define DRM_PCIE_SPEED_80 4 979 980 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask); 981 extern int drm_pcie_get_max_link_width(struct drm_device *dev, u32 *mlw); 982 983 /* platform section */ 984 extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device); 985 986 /* returns true if currently okay to sleep */ 987 static __inline__ bool drm_can_sleep(void) 988 { 989 if (in_atomic() || in_dbg_master() || irqs_disabled()) 990 return false; 991 return true; 992 } 993 994 /* helper for handling conditionals in various for_each macros */ 995 #define for_each_if(condition) if (!(condition)) {} else 996 997 #ifdef __DragonFly__ 998 struct drm_softc { 999 void *drm_driver_data; 1000 }; 1001 1002 /* sysctl support (drm_sysctl.h) */ 1003 extern int drm_sysctl_init(struct drm_device *dev); 1004 extern int drm_sysctl_cleanup(struct drm_device *dev); 1005 1006 unsigned long drm_get_resource_start(struct drm_device *dev, 1007 unsigned int resource); 1008 unsigned long drm_get_resource_len(struct drm_device *dev, 1009 unsigned int resource); 1010 1011 int ttm_bo_mmap_single(struct drm_device *dev, vm_ooffset_t *offset, 1012 vm_size_t size, struct vm_object **obj_res, int nprot); 1013 1014 int drm_gem_mmap_single(struct drm_device *dev, vm_ooffset_t *offset, 1015 vm_size_t size, struct vm_object **obj_res, int nprot); 1016 1017 /* XXX: These are here only because of drm_sysctl.c */ 1018 extern int drm_vblank_offdelay; 1019 extern unsigned int drm_timestamp_precision; 1020 #endif 1021 1022 #endif 1023