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