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 #if defined(_KERNEL) || defined(__KERNEL__) 39 40 #include <sys/param.h> 41 #include <sys/queue.h> 42 #include <sys/malloc.h> 43 #include <sys/kernel.h> 44 #include <sys/ktr.h> 45 #include <sys/module.h> 46 #include <sys/systm.h> 47 #include <sys/device.h> 48 #include <sys/sglist.h> 49 #include <sys/stat.h> 50 #include <sys/priv.h> 51 #include <sys/proc.h> 52 #include <sys/lock.h> 53 #include <sys/spinlock.h> 54 #include <sys/spinlock2.h> 55 #include <sys/fcntl.h> 56 #include <sys/uio.h> 57 #include <sys/filio.h> 58 #include <sys/sysctl.h> 59 #include <sys/bus.h> 60 #include <sys/queue.h> 61 #include <sys/signalvar.h> 62 #include <sys/poll.h> 63 #include <linux/highmem.h> 64 #include <sys/sbuf.h> 65 #include <sys/taskqueue.h> 66 #include <sys/tree.h> 67 #include <vm/vm.h> 68 #include <vm/pmap.h> 69 #include <vm/vm_extern.h> 70 #include <vm/vm_kern.h> 71 #include <vm/vm_map.h> 72 #include <vm/vm_object.h> 73 #include <vm/vm_page2.h> 74 #include <vm/vm_pager.h> 75 #include <vm/vm_param.h> 76 #include <machine/param.h> 77 #include <machine/pmap.h> 78 #ifdef __x86_64__ 79 #include <machine/specialreg.h> 80 #endif 81 #include <machine/sysarch.h> 82 #include <sys/endian.h> 83 #include <sys/mman.h> 84 #include <sys/rman.h> 85 #include <sys/memrange.h> 86 #include <sys/agpio.h> 87 #include <sys/mutex.h> 88 89 MALLOC_DECLARE(M_DRM); 90 91 #include <uapi_drm/drm.h> 92 #include <uapi_drm/drm_sarea.h> 93 94 #include <linux/atomic.h> 95 #include <linux/bug.h> 96 #include <linux/dma-mapping.h> 97 #include <linux/capability.h> 98 #include <linux/err.h> 99 #include <linux/idr.h> 100 #include <linux/pci.h> 101 #include <linux/jiffies.h> 102 #include <linux/kernel.h> 103 #include <linux/fs.h> 104 #include <linux/kref.h> 105 #include <linux/list.h> 106 #include <linux/mm.h> 107 #include <linux/moduleparam.h> 108 #include <linux/mutex.h> 109 #include <linux/slab.h> 110 #include <linux/scatterlist.h> 111 #include <linux/timer.h> 112 #include <asm/io.h> 113 #include <linux/seq_file.h> 114 #include <linux/types.h> 115 #include <linux/wait.h> 116 #include <linux/workqueue.h> 117 118 #include <asm/uaccess.h> 119 120 #include <drm/drm_global.h> 121 122 #include <drm/drm_vma_manager.h> 123 124 struct drm_file; 125 struct drm_device; 126 struct drm_agp_head; 127 struct drm_gem_object; 128 129 struct device_node; 130 struct videomode; 131 132 #include <drm/drm_os_linux.h> 133 #include <drm/drm_hashtab.h> 134 #include <drm/drm_mm.h> 135 136 /* 137 * 4 debug categories are defined: 138 * 139 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ... 140 * This is the category used by the DRM_DEBUG() macro. 141 * 142 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ... 143 * This is the category used by the DRM_DEBUG_DRIVER() macro. 144 * 145 * KMS: used in the modesetting code. 146 * This is the category used by the DRM_DEBUG_KMS() macro. 147 * 148 * PRIME: used in the prime code. 149 * This is the category used by the DRM_DEBUG_PRIME() macro. 150 * 151 * Enabling verbose debug messages is done through the drm.debug parameter, 152 * each category being enabled by a bit. 153 * 154 * drm.debug=0x1 will enable CORE messages 155 * drm.debug=0x2 will enable DRIVER messages 156 * drm.debug=0x3 will enable CORE and DRIVER messages 157 * ... 158 * drm.debug=0xf will enable all messages 159 * 160 * An interesting feature is that it's possible to enable verbose logging at 161 * run-time by echoing the debug value in its sysfs node: 162 * # echo 0xf > /sys/module/drm/parameters/debug 163 */ 164 #define DRM_UT_CORE 0x01 165 #define DRM_UT_DRIVER 0x02 166 #define DRM_UT_KMS 0x04 167 #define DRM_UT_PRIME 0x08 168 169 void drm_ut_debug_printk(const char *function_name, 170 const char *format, ...); 171 172 void drm_err(const char *func, const char *format, ...); 173 174 /***********************************************************************/ 175 /** \name DRM template customization defaults */ 176 /*@{*/ 177 178 /* driver capabilities and requirements mask */ 179 #define DRIVER_USE_AGP 0x1 180 #define DRIVER_REQUIRE_AGP 0x2 181 #define DRIVER_PCI_DMA 0x8 182 #define DRIVER_SG 0x10 183 #define DRIVER_HAVE_DMA 0x20 184 #define DRIVER_HAVE_IRQ 0x40 185 #define DRIVER_IRQ_SHARED 0x80 186 #define DRIVER_DMA_QUEUE 0x200 187 #define DRIVER_GEM 0x1000 188 #define DRIVER_MODESET 0x2000 189 #define DRIVER_PRIME 0x4000 190 #define DRIVER_RENDER 0x8000 191 192 /***********************************************************************/ 193 /** \name Begin the DRM... */ 194 /*@{*/ 195 196 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then 197 also include looping detection. */ 198 199 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */ 200 201 /*@}*/ 202 203 /***********************************************************************/ 204 /** \name Macros to make printk easier */ 205 /*@{*/ 206 207 /** 208 * Error output. 209 * 210 * \param fmt printf() like format string. 211 * \param arg arguments 212 */ 213 #define DRM_ERROR(fmt, ...) \ 214 kprintf("error: [" DRM_NAME ":pid%d:%s] *ERROR* " fmt, \ 215 DRM_CURRENTPID, __func__ , ##__VA_ARGS__) 216 217 #define DRM_GEM_MAPPING_MASK (3ULL << 62) 218 #define DRM_GEM_MAPPING_KEY (2ULL << 62) /* Non-canonical address form */ 219 #define DRM_GEM_MAX_IDX 0x3fffff 220 #define DRM_GEM_MAPPING_IDX(o) (((o) >> 40) & DRM_GEM_MAX_IDX) 221 #define DRM_GEM_MAPPING_OFF(i) (((uint64_t)(i)) << 40) 222 #define DRM_GEM_MAPPING_MAPOFF(o) \ 223 ((o) & ~(DRM_GEM_MAPPING_OFF(DRM_GEM_MAX_IDX) | DRM_GEM_MAPPING_KEY)) 224 225 SYSCTL_DECL(_hw_drm); 226 227 #define DRM_MAX(a,b) ((a)>(b)?(a):(b)) 228 229 #define DRM_IF_VERSION(maj, min) (maj << 16 | min) 230 231 #define __OS_HAS_AGP 1 232 233 #define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) 234 #define DRM_DEV_UID 0 235 #define DRM_DEV_GID 0 236 237 #define DRM_CURPROC curthread 238 #define DRM_STRUCTPROC struct thread 239 #define DRM_CURRENTPID (curproc != NULL ? curproc->p_pid : -1) 240 #define DRM_LOCK(dev) lockmgr(&(dev)->struct_mutex, LK_EXCLUSIVE) 241 #define DRM_UNLOCK(dev) lockmgr(&(dev)->struct_mutex, LK_RELEASE) 242 #define DRM_LOCK_SLEEP(dev, chan, flags, msg, timeout) \ 243 (lksleep((chan), &(dev)->struct_mutex, (flags), (msg), (timeout))) 244 #if defined(INVARIANTS) 245 #define DRM_LOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) != 0); 246 #define DRM_UNLOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) == 0); 247 #else 248 #define DRM_LOCK_ASSERT(d) 249 #define DRM_UNLOCK_ASSERT(d) 250 #endif 251 252 #define DRM_SYSCTL_HANDLER_ARGS (SYSCTL_HANDLER_ARGS) 253 254 typedef void irqreturn_t; 255 #define IRQ_HANDLED /* nothing */ 256 #define IRQ_NONE /* nothing */ 257 258 enum { 259 DRM_IS_NOT_AGP, 260 DRM_IS_AGP, 261 DRM_MIGHT_BE_AGP 262 }; 263 #define DRM_AGP_MEM struct agp_memory_info 264 265 #define drm_get_device_from_kdev(_kdev) (_kdev->si_drv1) 266 267 #define DRM_AGP_FIND_DEVICE() agp_find_device() 268 #define DRM_MTRR_WC MDF_WRITECOMBINE 269 270 #define LOCK_TEST_WITH_RETURN(dev, file_priv) \ 271 do { \ 272 if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) || \ 273 dev->lock.file_priv != file_priv) { \ 274 DRM_ERROR("%s called without lock held\n", \ 275 __FUNCTION__); \ 276 return EINVAL; \ 277 } \ 278 } while (0) 279 280 /* Returns -errno to shared code */ 281 #define DRM_WAIT_ON( ret, queue, timeout, condition ) \ 282 for ( ret = 0 ; !ret && !(condition) ; ) { \ 283 DRM_UNLOCK(dev); \ 284 lwkt_serialize_enter(&dev->irq_lock); \ 285 if (!(condition)) { \ 286 tsleep_interlock(&(queue), PCATCH); \ 287 lwkt_serialize_exit(&dev->irq_lock); \ 288 ret = -tsleep(&(queue), PCATCH | PINTERLOCKED, \ 289 "drmwtq", (timeout)); \ 290 } else { \ 291 lwkt_serialize_exit(&dev->irq_lock); \ 292 } \ 293 DRM_LOCK(dev); \ 294 } 295 296 int vm_phys_fictitious_reg_range(vm_paddr_t start, vm_paddr_t end, 297 vm_memattr_t memattr); 298 void vm_phys_fictitious_unreg_range(vm_paddr_t start, vm_paddr_t end); 299 vm_page_t vm_phys_fictitious_to_vm_page(vm_paddr_t pa); 300 301 /***********************************************************************/ 302 /** \name Macros to make printk easier */ 303 /*@{*/ 304 305 306 #define DRM_INFO(fmt, ...) kprintf("info: [" DRM_NAME "] " fmt , ##__VA_ARGS__) 307 308 #define DRM_INFO_ONCE(fmt, ...) \ 309 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) 310 311 #define DRM_DEBUGBITS_DEBUG 0x1 312 #define DRM_DEBUGBITS_KMS 0x2 313 #define DRM_DEBUGBITS_FAILED_IOCTL 0x4 314 #define DRM_DEBUGBITS_VERBOSE 0x8 315 316 #define DRM_DEBUG(fmt, ...) do { \ 317 if ((drm_debug & DRM_DEBUGBITS_DEBUG) != 0) \ 318 kprintf("[" DRM_NAME ":pid%d:%s] " fmt, DRM_CURRENTPID, \ 319 __func__ , ##__VA_ARGS__); \ 320 } while (0) 321 322 #define DRM_DEBUG_VERBOSE(fmt, ...) do { \ 323 if ((drm_debug & DRM_DEBUGBITS_VERBOSE) != 0) \ 324 kprintf("[" DRM_NAME ":pid%d:%s] " fmt, DRM_CURRENTPID, \ 325 __func__ , ##__VA_ARGS__); \ 326 } while (0) 327 328 #define DRM_DEBUG_KMS(fmt, ...) do { \ 329 if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \ 330 kprintf("[" DRM_NAME ":KMS:pid%d:%s] " fmt, DRM_CURRENTPID,\ 331 __func__ , ##__VA_ARGS__); \ 332 } while (0) 333 334 #define DRM_DEBUG_DRIVER(fmt, ...) do { \ 335 if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \ 336 kprintf("[" DRM_NAME ":KMS:pid%d:%s] " fmt, DRM_CURRENTPID,\ 337 __func__ , ##__VA_ARGS__); \ 338 } while (0) 339 340 #define DRM_LOG_KMS(fmt, ...) do { \ 341 kprintf("[" DRM_NAME ":KMS:pid%d:%s] " fmt, DRM_CURRENTPID, \ 342 __func__ , ##__VA_ARGS__); \ 343 } while (0) 344 345 #define dev_dbg(dev, fmt, ...) do { \ 346 if ((drm_debug& DRM_DEBUGBITS_KMS) != 0) { \ 347 device_printf((dev), "debug: " fmt, ## __VA_ARGS__); \ 348 } \ 349 } while (0) 350 351 typedef struct drm_pci_id_list 352 { 353 int vendor; 354 int device; 355 long driver_private; 356 char *name; 357 } drm_pci_id_list_t; 358 359 struct drm_msi_blacklist_entry 360 { 361 int vendor; 362 int device; 363 }; 364 365 /** 366 * Ioctl function type. 367 * 368 * \param inode device inode. 369 * \param file_priv DRM file private pointer. 370 * \param cmd command. 371 * \param arg argument. 372 */ 373 typedef int drm_ioctl_t(struct drm_device *dev, void *data, 374 struct drm_file *file_priv); 375 376 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd, 377 unsigned long arg); 378 379 #define DRM_IOCTL_NR(n) ((n) & 0xff) 380 381 #define DRM_AUTH 0x1 382 #define DRM_MASTER 0x2 383 #define DRM_ROOT_ONLY 0x4 384 #define DRM_CONTROL_ALLOW 0x8 385 #define DRM_UNLOCKED 0x10 386 #define DRM_RENDER_ALLOW 0x20 387 388 struct drm_ioctl_desc { 389 unsigned int cmd; 390 int flags; 391 drm_ioctl_t *func; 392 unsigned int cmd_drv; 393 const char *name; 394 }; 395 396 /** 397 * Creates a driver or general drm_ioctl_desc array entry for the given 398 * ioctl, for use by drm_ioctl(). 399 */ 400 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ 401 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl} 402 403 typedef struct drm_magic_entry { 404 struct list_head head; 405 struct drm_hash_item hash_item; 406 struct drm_file *priv; 407 struct drm_magic_entry *next; 408 } drm_magic_entry_t; 409 410 typedef struct drm_magic_head { 411 struct drm_magic_entry *head; 412 struct drm_magic_entry *tail; 413 } drm_magic_head_t; 414 415 typedef struct drm_buf { 416 int idx; /**< Index into master buflist */ 417 int total; /**< Buffer size */ 418 int order; /**< log-base-2(total) */ 419 int used; /**< Amount of buffer in use (for DMA) */ 420 unsigned long offset; /**< Byte offset (used internally) */ 421 void *address; /**< Address of buffer */ 422 unsigned long bus_address; /**< Bus address of buffer */ 423 struct drm_buf *next; /**< Kernel-only: used for free list */ 424 __volatile__ int waiting; /**< On kernel DMA queue */ 425 __volatile__ int pending; /**< On hardware DMA queue */ 426 struct drm_file *file_priv; /**< Private of holding file descr */ 427 int context; /**< Kernel queue for this buffer */ 428 int while_locked; /**< Dispatch this buffer while locked */ 429 enum { 430 DRM_LIST_NONE = 0, 431 DRM_LIST_FREE = 1, 432 DRM_LIST_WAIT = 2, 433 DRM_LIST_PEND = 3, 434 DRM_LIST_PRIO = 4, 435 DRM_LIST_RECLAIM = 5 436 } list; /**< Which list we're on */ 437 438 int dev_priv_size; /**< Size of buffer private storage */ 439 void *dev_private; /**< Per-buffer private storage */ 440 } drm_buf_t; 441 442 /** bufs is one longer than it has to be */ 443 struct drm_waitlist { 444 int count; /**< Number of possible buffers */ 445 struct drm_buf **bufs; /**< List of pointers to buffers */ 446 struct drm_buf **rp; /**< Read pointer */ 447 struct drm_buf **wp; /**< Write pointer */ 448 struct drm_buf **end; /**< End pointer */ 449 spinlock_t read_lock; 450 spinlock_t write_lock; 451 }; 452 453 typedef struct drm_dma_handle { 454 void *vaddr; 455 size_t size; 456 bus_addr_t busaddr; 457 bus_dma_tag_t tag; 458 bus_dmamap_t map; 459 } drm_dma_handle_t; 460 461 typedef struct drm_buf_entry { 462 int buf_size; 463 int buf_count; 464 drm_buf_t *buflist; 465 int seg_count; 466 int page_order; 467 struct drm_dma_handle **seglist; 468 469 int low_mark; /**< Low water mark */ 470 int high_mark; /**< High water mark */ 471 } drm_buf_entry_t; 472 473 /* Event queued up for userspace to read */ 474 struct drm_pending_event { 475 struct drm_event *event; 476 struct list_head link; 477 struct drm_file *file_priv; 478 pid_t pid; /* pid of requester, no guarantee it's valid by the time 479 we deliver the event, for tracing only */ 480 void (*destroy)(struct drm_pending_event *event); 481 }; 482 483 /* initial implementaton using a linked list - todo hashtab */ 484 struct drm_prime_file_private { 485 struct list_head head; 486 #ifdef DUMBBELL_WIP 487 struct mutex lock; 488 #endif /* DUMBBELL_WIP */ 489 }; 490 491 /** File private data */ 492 struct drm_file { 493 int authenticated; 494 struct drm_device *dev; 495 int master; 496 497 /* true when the client has asked us to expose stereo 3D mode flags */ 498 bool stereo_allowed; 499 /* 500 * true if client understands CRTC primary planes and cursor planes 501 * in the plane list 502 */ 503 unsigned universal_planes:1; 504 505 pid_t pid; 506 uid_t uid; 507 drm_magic_t magic; 508 unsigned long ioctl_count; 509 struct list_head lhead; 510 struct kqinfo dkq; 511 512 /** Mapping of mm object handles to object pointers. */ 513 struct idr object_idr; 514 /** Lock for synchronization of access to object_idr. */ 515 struct lock table_lock; 516 517 void *driver_priv; 518 519 int is_master; 520 struct drm_master *masterp; 521 522 /** 523 * fbs - List of framebuffers associated with this file. 524 * 525 * Protected by fbs_lock. Note that the fbs list holds a reference on 526 * the fb object to prevent it from untimely disappearing. 527 */ 528 struct list_head fbs; 529 struct lock fbs_lock; 530 531 wait_queue_head_t event_wait; 532 struct list_head event_list; 533 int event_space; 534 535 struct drm_prime_file_private prime; 536 }; 537 538 /** Wait queue */ 539 struct drm_queue { 540 atomic_t use_count; /**< Outstanding uses (+1) */ 541 atomic_t finalization; /**< Finalization in progress */ 542 atomic_t block_count; /**< Count of processes waiting */ 543 atomic_t block_read; /**< Queue blocked for reads */ 544 wait_queue_head_t read_queue; /**< Processes waiting on block_read */ 545 atomic_t block_write; /**< Queue blocked for writes */ 546 wait_queue_head_t write_queue; /**< Processes waiting on block_write */ 547 atomic_t total_queued; /**< Total queued statistic */ 548 atomic_t total_flushed; /**< Total flushes statistic */ 549 atomic_t total_locks; /**< Total locks statistics */ 550 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */ 551 struct drm_waitlist waitlist; /**< Pending buffers */ 552 wait_queue_head_t flush_queue; /**< Processes waiting until flush */ 553 }; 554 555 /** 556 * Lock data. 557 */ 558 struct drm_lock_data { 559 struct drm_hw_lock *hw_lock; /**< Hardware lock */ 560 /** Private of lock holder's file (NULL=kernel) */ 561 struct drm_file *file_priv; 562 wait_queue_head_t lock_queue; /**< Queue of blocked processes */ 563 unsigned long lock_time; /**< Time of last lock in jiffies */ 564 }; 565 566 /* This structure, in the struct drm_device, is always initialized while the 567 * device 568 * is open. dev->dma_lock protects the incrementing of dev->buf_use, which 569 * when set marks that no further bufs may be allocated until device teardown 570 * occurs (when the last open of the device has closed). The high/low 571 * watermarks of bufs are only touched by the X Server, and thus not 572 * concurrently accessed, so no locking is needed. 573 */ 574 typedef struct drm_device_dma { 575 576 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */ 577 int buf_count; /**< total number of buffers */ 578 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */ 579 int seg_count; 580 int page_count; /**< number of pages */ 581 unsigned long *pagelist; /**< page list */ 582 unsigned long byte_count; 583 enum { 584 _DRM_DMA_USE_AGP = 0x01, 585 _DRM_DMA_USE_SG = 0x02, 586 _DRM_DMA_USE_FB = 0x04, 587 _DRM_DMA_USE_PCI_RO = 0x08 588 } flags; 589 590 } drm_device_dma_t; 591 592 typedef struct drm_sg_mem { 593 vm_offset_t vaddr; 594 vm_paddr_t *busaddr; 595 vm_pindex_t pages; 596 } drm_sg_mem_t; 597 598 /** 599 * Kernel side of a mapping 600 */ 601 struct drm_local_map { 602 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/ 603 unsigned long size; /**< Requested physical size (bytes) */ 604 enum drm_map_type type; /**< Type of memory to map */ 605 enum drm_map_flags flags; /**< Flags */ 606 void *handle; /**< User-space: "Handle" to pass to mmap() */ 607 /**< Kernel-space: kernel-virtual address */ 608 int mtrr; /**< MTRR slot used */ 609 }; 610 611 typedef struct drm_local_map drm_local_map_t; 612 613 /** 614 * Mappings list 615 */ 616 struct drm_map_list { 617 struct list_head head; /**< list head */ 618 struct drm_hash_item hash; 619 struct drm_local_map *map; /**< mapping */ 620 uint64_t user_token; 621 struct drm_master *master; 622 struct drm_mm_node *file_offset_node; /**< fake offset */ 623 }; 624 625 /* location of GART table */ 626 #define DRM_ATI_GART_MAIN 1 627 #define DRM_ATI_GART_FB 2 628 629 #define DRM_ATI_GART_PCI 1 630 #define DRM_ATI_GART_PCIE 2 631 #define DRM_ATI_GART_IGP 3 632 633 struct drm_ati_pcigart_info { 634 int gart_table_location; 635 int gart_reg_if; 636 void *addr; 637 dma_addr_t bus_addr; 638 dma_addr_t table_mask; 639 dma_addr_t member_mask; 640 struct drm_dma_handle *table_handle; 641 drm_local_map_t mapping; 642 int table_size; 643 struct drm_dma_handle *dmah; /* handle for ATI PCIGART table */ 644 }; 645 646 /** 647 * GEM specific mm private for tracking GEM objects 648 */ 649 struct drm_gem_mm { 650 struct drm_vma_offset_manager vma_manager; 651 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */ 652 struct drm_open_hash offset_hash; /**< User token hash table for maps */ 653 struct unrhdr *idxunr; 654 }; 655 656 657 #include "drm_crtc.h" 658 659 /** 660 * struct drm_master - drm master structure 661 * 662 * @refcount: Refcount for this master object. 663 * @minor: Link back to minor char device we are master for. Immutable. 664 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex. 665 * @unique_len: Length of unique field. Protected by drm_global_mutex. 666 * @unique_size: Amount allocated. Protected by drm_global_mutex. 667 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex. 668 * @magicfree: List of used authentication tokens. Protected by struct_mutex. 669 * @lock: DRI lock information. 670 * @driver_priv: Pointer to driver-private information. 671 */ 672 struct drm_master { 673 674 struct kref refcount; /* refcount for this master */ 675 676 struct list_head head; /**< each minor contains a list of masters */ 677 struct drm_minor *minor; /**< link back to minor we are a master for */ 678 679 char *unique; /**< Unique identifier: e.g., busid */ 680 int unique_len; /**< Length of unique field */ 681 int unique_size; /**< amount allocated */ 682 683 int blocked; /**< Blocked due to VC switch? */ 684 685 struct drm_open_hash magiclist; 686 struct list_head magicfree; 687 struct drm_lock_data lock; 688 void *driver_priv; 689 }; 690 691 /* Size of ringbuffer for vblank timestamps. Just double-buffer 692 * in initial implementation. 693 */ 694 #define DRM_VBLANKTIME_RBSIZE 2 695 696 /* Flags and return codes for get_vblank_timestamp() driver function. */ 697 #define DRM_CALLED_FROM_VBLIRQ 1 698 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0) 699 #define DRM_VBLANKTIME_IN_VBLANK (1 << 1) 700 701 /* get_scanout_position() return flags */ 702 #define DRM_SCANOUTPOS_VALID (1 << 0) 703 #define DRM_SCANOUTPOS_IN_VBLANK (1 << 1) 704 #define DRM_SCANOUTPOS_ACCURATE (1 << 2) 705 706 #ifndef DMA_BIT_MASK 707 #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : (1ULL<<(n)) - 1) 708 #endif 709 710 #define upper_32_bits(n) ((u32)(((n) >> 16) >> 16)) 711 712 /** 713 * DRM driver structure. This structure represent the common code for 714 * a family of cards. There will one drm_device for each card present 715 * in this family 716 */ 717 struct drm_driver { 718 int (*load)(struct drm_device *, unsigned long flags); 719 int (*use_msi)(struct drm_device *, unsigned long flags); 720 int (*firstopen)(struct drm_device *); 721 int (*open)(struct drm_device *, struct drm_file *); 722 void (*preclose)(struct drm_device *, struct drm_file *file_priv); 723 void (*postclose)(struct drm_device *, struct drm_file *); 724 void (*lastclose)(struct drm_device *); 725 int (*unload)(struct drm_device *); 726 void (*reclaim_buffers_locked)(struct drm_device *, 727 struct drm_file *file_priv); 728 int (*dma_ioctl)(struct drm_device *dev, void *data, 729 struct drm_file *file_priv); 730 void (*dma_ready)(struct drm_device *); 731 int (*dma_quiescent)(struct drm_device *); 732 int (*dma_flush_block_and_flush)(struct drm_device *, int context, 733 enum drm_lock_flags flags); 734 int (*dma_flush_unblock)(struct drm_device *, int context, 735 enum drm_lock_flags flags); 736 int (*context_ctor)(struct drm_device *dev, int context); 737 int (*context_dtor)(struct drm_device *dev, int context); 738 int (*kernel_context_switch)(struct drm_device *dev, int old, 739 int new); 740 int (*kernel_context_switch_unlock)(struct drm_device *dev); 741 void (*irq_preinstall)(struct drm_device *dev); 742 int (*irq_postinstall)(struct drm_device *dev); 743 void (*irq_uninstall)(struct drm_device *dev); 744 void (*irq_handler)(void *arg); 745 746 u32 (*get_vblank_counter)(struct drm_device *dev, int crtc); 747 int (*enable_vblank)(struct drm_device *dev, int crtc); 748 void (*disable_vblank)(struct drm_device *dev, int crtc); 749 750 /** 751 * Called by vblank timestamping code. 752 * 753 * Return the current display scanout position from a crtc, and an 754 * optional accurate ktime_get timestamp of when position was measured. 755 * 756 * \param dev DRM device. 757 * \param crtc Id of the crtc to query. 758 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0). 759 * \param *vpos Target location for current vertical scanout position. 760 * \param *hpos Target location for current horizontal scanout position. 761 * \param *stime Target location for timestamp taken immediately before 762 * scanout position query. Can be NULL to skip timestamp. 763 * \param *etime Target location for timestamp taken immediately after 764 * scanout position query. Can be NULL to skip timestamp. 765 * 766 * Returns vpos as a positive number while in active scanout area. 767 * Returns vpos as a negative number inside vblank, counting the number 768 * of scanlines to go until end of vblank, e.g., -1 means "one scanline 769 * until start of active scanout / end of vblank." 770 * 771 * \return Flags, or'ed together as follows: 772 * 773 * DRM_SCANOUTPOS_VALID = Query successful. 774 * DRM_SCANOUTPOS_INVBL = Inside vblank. 775 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of 776 * this flag means that returned position may be offset by a constant 777 * but unknown small number of scanlines wrt. real scanout position. 778 * 779 */ 780 int (*get_scanout_position) (struct drm_device *dev, int crtc, 781 unsigned int flags, 782 int *vpos, int *hpos, ktime_t *stime, 783 ktime_t *etime); 784 785 int (*get_vblank_timestamp)(struct drm_device *dev, int crtc, 786 int *max_error, struct timeval *vblank_time, 787 unsigned flags); 788 789 void (*gem_free_object)(struct drm_gem_object *obj); 790 int (*gem_open_object)(struct drm_gem_object *, struct drm_file *); 791 void (*gem_close_object)(struct drm_gem_object *, struct drm_file *); 792 793 struct cdev_pager_ops *gem_pager_ops; 794 795 int (*dumb_create)(struct drm_file *file_priv, 796 struct drm_device *dev, struct drm_mode_create_dumb *args); 797 int (*dumb_map_offset)(struct drm_file *file_priv, 798 struct drm_device *dev, uint32_t handle, uint64_t *offset); 799 int (*dumb_destroy)(struct drm_file *file_priv, 800 struct drm_device *dev, uint32_t handle); 801 802 int (*sysctl_init)(struct drm_device *dev, 803 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 804 void (*sysctl_cleanup)(struct drm_device *dev); 805 806 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */ 807 808 /** 809 * Called by \c drm_device_is_agp. Typically used to determine if a 810 * card is really attached to AGP or not. 811 * 812 * \param dev DRM device handle 813 * 814 * \returns 815 * One of three values is returned depending on whether or not the 816 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP 817 * (return of 1), or may or may not be AGP (return of 2). 818 */ 819 int (*device_is_agp) (struct drm_device * dev); 820 821 int major; 822 int minor; 823 int patchlevel; 824 const char *name; /* Simple driver name */ 825 const char *desc; /* Longer driver name */ 826 const char *date; /* Date of last major changes. */ 827 828 u32 driver_features; 829 int dev_priv_size; 830 const struct drm_ioctl_desc *ioctls; 831 int num_ioctls; 832 }; 833 834 /** 835 * Info file list entry. This structure represents a debugfs or proc file to 836 * be created by the drm core 837 */ 838 struct drm_info_list { 839 const char *name; /** file name */ 840 int (*show)(struct seq_file*, void*); /** show callback */ 841 u32 driver_features; /**< Required driver features for this entry */ 842 void *data; 843 }; 844 845 /** 846 * debugfs node structure. This structure represents a debugfs file. 847 */ 848 struct drm_info_node { 849 struct list_head list; 850 struct drm_minor *minor; 851 const struct drm_info_list *info_ent; 852 struct dentry *dent; 853 }; 854 855 /** 856 * DRM minor structure. This structure represents a drm minor number. 857 */ 858 struct drm_minor { 859 int index; /**< Minor device number */ 860 int type; /**< Control or render */ 861 device_t kdev; /**< OS device */ 862 struct drm_device *dev; 863 864 struct drm_master *master; /* currently active master for this node */ 865 struct list_head master_list; 866 struct drm_mode_group mode_group; 867 }; 868 869 struct drm_pending_vblank_event { 870 struct drm_pending_event base; 871 int pipe; 872 struct drm_event_vblank event; 873 }; 874 875 struct drm_sysctl_info { 876 struct sysctl_ctx_list ctx; 877 char name[2]; 878 }; 879 880 /* Length for the array of resource pointers for drm_get_resource_*. */ 881 #define DRM_MAX_PCI_RESOURCE 6 882 883 struct drm_vblank_crtc { 884 struct drm_device *dev; /* pointer to the drm_device */ 885 wait_queue_head_t queue; /**< VBLANK wait queue */ 886 struct timeval time[DRM_VBLANKTIME_RBSIZE]; /**< timestamp of current count */ 887 struct timer_list disable_timer; /* delayed disable timer */ 888 atomic_t count; /**< number of VBLANK interrupts */ 889 atomic_t refcount; /* number of users of vblank interruptsper crtc */ 890 u32 last; /* protected by dev->vbl_lock, used */ 891 /* for wraparound handling */ 892 u32 last_wait; /* Last vblank seqno waited per CRTC */ 893 unsigned int inmodeset; /* Display driver is setting mode */ 894 int crtc; /* crtc index */ 895 bool enabled; /* so we don't call enable more than 896 once per disable */ 897 }; 898 899 /** 900 * DRM device structure. This structure represent a complete card that 901 * may contain multiple heads. 902 */ 903 struct drm_device { 904 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */ 905 906 uint16_t pci_subdevice; /* PCI subsystem device id */ 907 uint16_t pci_subvendor; /* PCI subsystem vendor id */ 908 909 char *unique; /* Unique identifier: e.g., busid */ 910 int unique_len; /* Length of unique field */ 911 struct cdev *devnode; /* Device number for mknod */ 912 int if_version; /* Highest interface version set */ 913 914 int flags; /* Flags to open(2) */ 915 916 /* Locks */ 917 struct spinlock dma_lock; /* protects dev->dma */ 918 struct lwkt_serialize irq_lock; /* protects irq condition checks */ 919 struct lock dev_lock; /* protects everything else */ 920 921 /** \name Locks */ 922 /*@{ */ 923 struct lock struct_mutex; /**< For others */ 924 struct lock master_mutex; /**< For drm_minor::master */ 925 /*@} */ 926 927 /** \name Usage Counters */ 928 /*@{ */ 929 int open_count; /**< Outstanding files open, protected by drm_global_mutex. */ 930 struct spinlock buf_lock; /**< For drm_device::buf_use and a few other things. */ 931 int buf_use; /**< Buffers in use -- cannot alloc */ 932 atomic_t buf_alloc; /**< Buffer allocation in progress */ 933 /*@} */ 934 935 936 /** \name Performance counters */ 937 /*@{ */ 938 unsigned long counters; 939 enum drm_stat_type types[15]; 940 atomic_t counts[15]; 941 /*@} */ 942 943 /* Authentication */ 944 struct drm_open_hash magiclist; /**< magic hash table */ 945 struct list_head magicfree; 946 947 struct list_head filelist; 948 949 /** \name Memory management */ 950 /*@{ */ 951 struct list_head maplist; /**< Linked list of regions */ 952 int map_count; /**< Number of mappable regions */ 953 struct drm_open_hash map_hash; /**< User token hash table for maps */ 954 955 /** \name Context handle management */ 956 /*@{ */ 957 struct list_head ctxlist; /**< Linked list of context handles */ 958 int ctx_count; /**< Number of context handles */ 959 struct lock ctxlist_mutex; /**< For ctxlist */ 960 961 struct idr ctx_idr; 962 963 /*@} */ 964 965 struct drm_lock_data lock; /* Information on hardware lock */ 966 967 /* DMA queues (contexts) */ 968 drm_device_dma_t *dma; /* Optional pointer for DMA support */ 969 970 int irq; /* Interrupt used by board */ 971 int irq_type; /* IRQ type (MSI enabled or not) */ 972 int irqrid; /* Interrupt used by board */ 973 struct resource *irqr; /* Resource for interrupt used by board */ 974 void *irqh; /* Handle from bus_setup_intr */ 975 976 /* Storage of resource pointers for drm_get_resource_* */ 977 struct resource *pcir[DRM_MAX_PCI_RESOURCE]; 978 int pcirid[DRM_MAX_PCI_RESOURCE]; 979 980 int pci_domain; 981 int pci_bus; 982 int pci_slot; 983 int pci_func; 984 985 /** \name Context support */ 986 /*@{ */ 987 int irq_enabled; /**< True if irq handler is enabled */ 988 __volatile__ long context_flag; /**< Context swapping flag */ 989 __volatile__ long interrupt_flag; /**< Interruption handler flag */ 990 __volatile__ long dma_flag; /**< DMA dispatch flag */ 991 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */ 992 int last_checked; /**< Last context checked for DMA */ 993 int last_context; /**< Last current context */ 994 unsigned long last_switch; /**< jiffies at last context switch */ 995 /*@} */ 996 997 /** \name VBLANK IRQ support */ 998 /*@{ */ 999 1000 /* 1001 * At load time, disabling the vblank interrupt won't be allowed since 1002 * old clients may not call the modeset ioctl and therefore misbehave. 1003 * Once the modeset ioctl *has* been called though, we can safely 1004 * disable them when unused. 1005 */ 1006 bool vblank_disable_allowed; 1007 1008 /* 1009 * If true, vblank interrupt will be disabled immediately when the 1010 * refcount drops to zero, as opposed to via the vblank disable 1011 * timer. 1012 * This can be set to true it the hardware has a working vblank 1013 * counter and the driver uses drm_vblank_on() and drm_vblank_off() 1014 * appropriately. 1015 */ 1016 bool vblank_disable_immediate; 1017 1018 /* array of size num_crtcs */ 1019 struct drm_vblank_crtc *vblank; 1020 1021 struct lock vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ 1022 struct lock vbl_lock; 1023 struct timer_list vblank_disable_timer; 1024 1025 u32 max_vblank_count; /**< size of vblank counter register */ 1026 1027 /** 1028 * List of events 1029 */ 1030 struct list_head vblank_event_list; 1031 struct lock event_lock; 1032 1033 /*@} */ 1034 1035 struct sigio *buf_sigio; /* Processes waiting for SIGIO */ 1036 1037 /* Sysctl support */ 1038 struct drm_sysctl_info *sysctl; 1039 1040 1041 drm_sg_mem_t *sg; /* Scatter gather memory */ 1042 unsigned int num_crtcs; /**< Number of CRTCs on this device */ 1043 1044 unsigned long *ctx_bitmap; 1045 void *dev_private; 1046 1047 void *drm_ttm_bdev; 1048 1049 /*@} */ 1050 1051 struct drm_agp_head *agp; /**< AGP data */ 1052 1053 struct device *dev; /**< Device structure */ 1054 struct pci_dev *pdev; /**< PCI device structure */ 1055 int pci_vendor; /**< PCI vendor id */ 1056 int pci_device; /**< PCI device id */ 1057 1058 struct drm_driver *driver; 1059 struct drm_local_map *agp_buffer_map; 1060 unsigned int agp_buffer_token; 1061 struct drm_minor *control; /**< Control node for card */ 1062 struct drm_minor *primary; /**< render type primary screen head */ 1063 1064 struct drm_mode_config mode_config; /**< Current mode config */ 1065 1066 /** \name GEM information */ 1067 /*@{ */ 1068 struct lock object_name_lock; 1069 struct idr object_name_idr; 1070 /*@} */ 1071 void *mm_private; 1072 1073 void *sysctl_private; 1074 char busid_str[128]; 1075 int modesetting; 1076 1077 int switch_power_state; 1078 1079 atomic_t unplugged; /* device has been unplugged or gone away */ 1080 }; 1081 1082 #define DRM_SWITCH_POWER_ON 0 1083 #define DRM_SWITCH_POWER_OFF 1 1084 #define DRM_SWITCH_POWER_CHANGING 2 1085 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3 1086 1087 static __inline__ int drm_core_check_feature(struct drm_device *dev, 1088 int feature) 1089 { 1090 return ((dev->driver->driver_features & feature) ? 1 : 0); 1091 } 1092 1093 static inline void drm_device_set_unplugged(struct drm_device *dev) 1094 { 1095 smp_wmb(); 1096 atomic_set(&dev->unplugged, 1); 1097 } 1098 1099 static inline int drm_device_is_unplugged(struct drm_device *dev) 1100 { 1101 int ret = atomic_read(&dev->unplugged); 1102 smp_rmb(); 1103 return ret; 1104 } 1105 1106 static inline bool drm_is_primary_client(const struct drm_file *file_priv) 1107 { 1108 return 0 /* file_priv->minor->type == DRM_MINOR_LEGACY */; 1109 } 1110 1111 /** 1112 * drm_is_master() - Check whether a DRM open-file is DRM-Master 1113 * @file: DRM open-file context 1114 * 1115 * This checks whether a DRM open-file context is owner of the master context 1116 * attached to it. If a file owns a master context, it's called DRM-Master. 1117 * Per DRM device, only one such file can be DRM-Master at a time. 1118 * 1119 * Returns: True if the file is DRM-Master, otherwise false. 1120 */ 1121 static inline bool drm_is_master(const struct drm_file *file) 1122 { 1123 #if 0 1124 return file->master && file->master == file->minor->master; 1125 #else 1126 return true; 1127 #endif 1128 } 1129 1130 /******************************************************************/ 1131 /** \name Internal function definitions */ 1132 /*@{*/ 1133 1134 #if __OS_HAS_AGP 1135 static inline int drm_core_has_AGP(struct drm_device *dev) 1136 { 1137 return drm_core_check_feature(dev, DRIVER_USE_AGP); 1138 } 1139 #else 1140 #define drm_core_has_AGP(dev) (0) 1141 #endif 1142 1143 extern int drm_notyet_flag; 1144 extern unsigned int drm_rnodes; 1145 extern unsigned int drm_universal_planes; 1146 1147 extern int drm_vblank_offdelay; 1148 extern unsigned int drm_timestamp_precision; 1149 extern unsigned int drm_timestamp_monotonic; 1150 1151 /* Driver support (drm_drv.h) */ 1152 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist); 1153 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist); 1154 int drm_create_cdevs(device_t kdev); 1155 d_ioctl_t drm_ioctl; 1156 extern int drm_lastclose(struct drm_device *dev); 1157 extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags); 1158 1159 /* Device support (drm_fops.h) */ 1160 extern struct lock drm_global_mutex; 1161 d_open_t drm_open; 1162 d_close_t drm_close; 1163 d_read_t drm_read; 1164 d_kqfilter_t drm_kqfilter; 1165 int drm_release(device_t kdev); 1166 1167 d_mmap_t drm_mmap; 1168 d_mmap_single_t drm_mmap_single; 1169 1170 void drm_cdevpriv_dtor(void *cd); 1171 1172 int drm_add_busid_modesetting(struct drm_device *dev, 1173 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 1174 1175 /* File operations helpers (drm_fops.c) */ 1176 extern int drm_open_helper(struct cdev *kdev, int flags, int fmt, 1177 DRM_STRUCTPROC *p, 1178 struct drm_device *dev, 1179 struct file *fp); 1180 extern struct drm_file *drm_find_file_by_proc(struct drm_device *dev, 1181 DRM_STRUCTPROC *p); 1182 1183 #ifdef DUMBBELL_WIP 1184 extern int drm_gem_prime_handle_to_fd(struct drm_device *dev, 1185 struct drm_file *file_priv, uint32_t handle, uint32_t flags, 1186 int *prime_fd); 1187 extern int drm_gem_prime_fd_to_handle(struct drm_device *dev, 1188 struct drm_file *file_priv, int prime_fd, uint32_t *handle); 1189 1190 extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data, 1191 struct drm_file *file_priv); 1192 extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data, 1193 struct drm_file *file_priv); 1194 1195 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, vm_page_t *pages, 1196 dma_addr_t *addrs, int max_pages); 1197 #endif /* DUMBBELL_WIP */ 1198 extern struct sg_table *drm_prime_pages_to_sg(vm_page_t *pages, int nr_pages); 1199 extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg); 1200 1201 #ifdef DUMBBELL_WIP 1202 void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv); 1203 void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv); 1204 int drm_prime_add_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t handle); 1205 int drm_prime_lookup_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t *handle); 1206 void drm_prime_remove_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf); 1207 1208 int drm_prime_add_dma_buf(struct drm_device *dev, struct drm_gem_object *obj); 1209 int drm_prime_lookup_obj(struct drm_device *dev, struct dma_buf *buf, 1210 struct drm_gem_object **obj); 1211 #endif /* DUMBBELL_WIP */ 1212 1213 void drm_mem_init(void); 1214 void drm_mem_uninit(void); 1215 void *drm_ioremap_wc(struct drm_device *dev, drm_local_map_t *map); 1216 void *drm_ioremap(struct drm_device *dev, drm_local_map_t *map); 1217 void drm_ioremapfree(drm_local_map_t *map); 1218 int drm_mtrr_add(unsigned long offset, size_t size, int flags); 1219 int drm_mtrr_del(int handle, unsigned long offset, size_t size, int flags); 1220 1221 /* Locking IOCTL support (drm_lock.c) */ 1222 int drm_lock_take(struct drm_lock_data *lock_data, 1223 unsigned int context); 1224 int drm_lock_transfer(struct drm_lock_data *lock_data, 1225 unsigned int context); 1226 int drm_lock_free(struct drm_lock_data *lock_data, 1227 unsigned int context); 1228 1229 /* 1230 * These are exported to drivers so that they can implement fencing using 1231 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. 1232 */ 1233 1234 unsigned long drm_get_resource_start(struct drm_device *dev, 1235 unsigned int resource); 1236 unsigned long drm_get_resource_len(struct drm_device *dev, 1237 unsigned int resource); 1238 1239 /* IRQ support (drm_irq.h) */ 1240 extern int drm_irq_install(struct drm_device *dev, int irq); 1241 int drm_irq_uninstall(struct drm_device *dev); 1242 void drm_driver_irq_preinstall(struct drm_device *dev); 1243 void drm_driver_irq_postinstall(struct drm_device *dev); 1244 void drm_driver_irq_uninstall(struct drm_device *dev); 1245 1246 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs); 1247 extern int drm_wait_vblank(struct drm_device *dev, void *data, 1248 struct drm_file *filp); 1249 extern u32 drm_vblank_count(struct drm_device *dev, int crtc); 1250 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc, 1251 struct timeval *vblanktime); 1252 extern void drm_send_vblank_event(struct drm_device *dev, int crtc, 1253 struct drm_pending_vblank_event *e); 1254 extern bool drm_handle_vblank(struct drm_device *dev, int crtc); 1255 extern int drm_vblank_get(struct drm_device *dev, int crtc); 1256 extern void drm_vblank_put(struct drm_device *dev, int crtc); 1257 extern int drm_crtc_vblank_get(struct drm_crtc *crtc); 1258 extern void drm_crtc_vblank_put(struct drm_crtc *crtc); 1259 extern void drm_wait_one_vblank(struct drm_device *dev, int crtc); 1260 extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc); 1261 extern void drm_vblank_off(struct drm_device *dev, int crtc); 1262 extern void drm_vblank_on(struct drm_device *dev, int crtc); 1263 extern void drm_crtc_vblank_off(struct drm_crtc *crtc); 1264 extern void drm_crtc_vblank_on(struct drm_crtc *crtc); 1265 extern void drm_vblank_cleanup(struct drm_device *dev); 1266 1267 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, 1268 int crtc, int *max_error, 1269 struct timeval *vblank_time, 1270 unsigned flags, 1271 const struct drm_crtc *refcrtc, 1272 const struct drm_display_mode *mode); 1273 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc, 1274 const struct drm_display_mode *mode); 1275 1276 /** 1277 * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC 1278 * @crtc: which CRTC's vblank waitqueue to retrieve 1279 * 1280 * This function returns a pointer to the vblank waitqueue for the CRTC. 1281 * Drivers can use this to implement vblank waits using wait_event() & co. 1282 */ 1283 static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc) 1284 { 1285 return &crtc->dev->vblank[drm_crtc_index(crtc)].queue; 1286 } 1287 1288 /* Modesetting support */ 1289 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc); 1290 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc); 1291 extern int drm_modeset_ctl(struct drm_device *dev, void *data, 1292 struct drm_file *file_priv); 1293 1294 /* AGP/GART support (drm_agpsupport.h) */ 1295 1296 #include <drm/drm_agpsupport.h> 1297 1298 /* sysctl support (drm_sysctl.h) */ 1299 extern int drm_sysctl_init(struct drm_device *dev); 1300 extern int drm_sysctl_cleanup(struct drm_device *dev); 1301 1302 /* ATI PCIGART support (ati_pcigart.c) */ 1303 int drm_ati_pcigart_init(struct drm_device *dev, 1304 struct drm_ati_pcigart_info *gart_info); 1305 int drm_ati_pcigart_cleanup(struct drm_device *dev, 1306 struct drm_ati_pcigart_info *gart_info); 1307 1308 /* Cache management (drm_memory.c) */ 1309 void drm_clflush_pages(vm_page_t *pages, unsigned long num_pages); 1310 1311 /* Locking IOCTL support (drm_drv.c) */ 1312 int drm_lock(struct drm_device *dev, void *data, 1313 struct drm_file *file_priv); 1314 int drm_unlock(struct drm_device *dev, void *data, 1315 struct drm_file *file_priv); 1316 int drm_setversion(struct drm_device *dev, void *data, 1317 struct drm_file *file_priv); 1318 1319 /* 1320 * These are exported to drivers so that they can implement fencing using 1321 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. 1322 */ 1323 1324 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv); 1325 1326 /* Misc. IOCTL support (drm_ioctl.c) */ 1327 int drm_irq_by_busid(struct drm_device *dev, void *data, 1328 struct drm_file *file_priv); 1329 int drm_getunique(struct drm_device *dev, void *data, 1330 struct drm_file *file_priv); 1331 int drm_setunique(struct drm_device *dev, void *data, 1332 struct drm_file *file_priv); 1333 int drm_getmap(struct drm_device *dev, void *data, 1334 struct drm_file *file_priv); 1335 int drm_getclient(struct drm_device *dev, void *data, 1336 struct drm_file *file_priv); 1337 int drm_getstats(struct drm_device *dev, void *data, 1338 struct drm_file *file_priv); 1339 int drm_getcap(struct drm_device *dev, void *data, 1340 struct drm_file *file_priv); 1341 extern int drm_setclientcap(struct drm_device *dev, void *data, 1342 struct drm_file *file_priv); 1343 int drm_noop(struct drm_device *dev, void *data, 1344 struct drm_file *file_priv); 1345 1346 /* Authentication IOCTL support (drm_auth.c) */ 1347 int drm_getmagic(struct drm_device *dev, void *data, 1348 struct drm_file *file_priv); 1349 int drm_authmagic(struct drm_device *dev, void *data, 1350 struct drm_file *file_priv); 1351 1352 /* Cache management (drm_cache.c) */ 1353 void drm_clflush_virt_range(void *addr, unsigned long length); 1354 1355 /* DMA support (drm_dma.c) */ 1356 int drm_dma(struct drm_device *dev, void *data, struct drm_file *file_priv); 1357 1358 /* IRQ support (drm_irq.c) */ 1359 int drm_control(struct drm_device *dev, void *data, 1360 struct drm_file *file_priv); 1361 1362 /* Stub support (drm_stub.h) */ 1363 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data, 1364 struct drm_file *file_priv); 1365 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data, 1366 struct drm_file *file_priv); 1367 1368 extern void drm_put_dev(struct drm_device *dev); 1369 extern void drm_unplug_dev(struct drm_device *dev); 1370 extern unsigned int drm_debug; 1371 1372 /* Scatter Gather Support (drm_scatter.c) */ 1373 int drm_sg_alloc_ioctl(struct drm_device *dev, void *data, 1374 struct drm_file *file_priv); 1375 int drm_sg_free(struct drm_device *dev, void *data, 1376 struct drm_file *file_priv); 1377 1378 /* consistent PCI memory functions (drm_pci.c) */ 1379 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size, 1380 size_t align); 1381 void drm_pci_free(struct drm_device *dev, drm_dma_handle_t *dmah); 1382 1383 /* sysfs support (drm_sysfs.c) */ 1384 struct drm_sysfs_class; 1385 extern struct class *drm_sysfs_create(struct module *owner, char *name); 1386 extern void drm_sysfs_destroy(void); 1387 extern int drm_sysfs_device_add(struct drm_minor *minor); 1388 extern void drm_sysfs_hotplug_event(struct drm_device *dev); 1389 extern void drm_sysfs_device_remove(struct drm_minor *minor); 1390 extern int drm_sysfs_connector_add(struct drm_connector *connector); 1391 extern void drm_sysfs_connector_remove(struct drm_connector *connector); 1392 1393 int drm_gem_close_ioctl(struct drm_device *dev, void *data, 1394 struct drm_file *file_priv); 1395 int drm_gem_flink_ioctl(struct drm_device *dev, void *data, 1396 struct drm_file *file_priv); 1397 int drm_gem_open_ioctl(struct drm_device *dev, void *data, 1398 struct drm_file *file_priv); 1399 void drm_gem_open(struct drm_device *dev, struct drm_file *file_priv); 1400 void drm_gem_release(struct drm_device *dev, struct drm_file *file_priv); 1401 1402 int drm_gem_mmap_single(struct drm_device *dev, vm_ooffset_t *offset, 1403 vm_size_t size, struct vm_object **obj_res, int nprot); 1404 void drm_gem_pager_dtr(void *obj); 1405 1406 struct ttm_bo_device; 1407 int ttm_bo_mmap_single(struct ttm_bo_device *bdev, vm_ooffset_t *offset, 1408 vm_size_t size, struct vm_object **obj_res, int nprot); 1409 struct ttm_buffer_object; 1410 void ttm_bo_release_mmap(struct ttm_buffer_object *bo); 1411 1412 void drm_device_lock_mtx(struct drm_device *dev); 1413 void drm_device_unlock_mtx(struct drm_device *dev); 1414 int drm_device_sleep_mtx(struct drm_device *dev, void *chan, int flags, 1415 const char *msg, int timeout); 1416 void drm_device_assert_mtx_locked(struct drm_device *dev); 1417 void drm_device_assert_mtx_unlocked(struct drm_device *dev); 1418 1419 void drm_device_lock_struct(struct drm_device *dev); 1420 void drm_device_unlock_struct(struct drm_device *dev); 1421 int drm_device_sleep_struct(struct drm_device *dev, void *chan, int flags, 1422 const char *msg, int timeout); 1423 void drm_device_assert_struct_locked(struct drm_device *dev); 1424 void drm_device_assert_struct_unlocked(struct drm_device *dev); 1425 1426 void drm_compat_locking_init(struct drm_device *dev); 1427 void drm_sleep_locking_init(struct drm_device *dev); 1428 1429 /* XXX glue logic, should be done in drm_pci_init(), pending drm update */ 1430 void drm_init_pdev(struct device *dev, struct pci_dev **pdev); 1431 void drm_fini_pdev(struct pci_dev **pdev); 1432 1433 /* Inline replacements for drm_alloc and friends */ 1434 static __inline__ void * 1435 drm_alloc(size_t size, struct malloc_type *area) 1436 { 1437 return kmalloc(size, area, M_WAITOK | M_NULLOK); 1438 } 1439 1440 static __inline__ void * 1441 drm_calloc(size_t nmemb, size_t size, struct malloc_type *area) 1442 { 1443 return kmalloc(size * nmemb, area, M_WAITOK | M_NULLOK | M_ZERO); 1444 } 1445 1446 static __inline__ void 1447 drm_free(void *pt, struct malloc_type *area) 1448 { 1449 kfree(pt); 1450 } 1451 1452 static __inline__ void 1453 drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev) 1454 { 1455 map->handle = drm_ioremap_wc(dev, map); 1456 } 1457 static __inline__ void 1458 drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev) 1459 { 1460 map->handle = drm_ioremap(dev, map); 1461 } 1462 static __inline__ void 1463 drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev) 1464 { 1465 if ( map->handle && map->size ) 1466 drm_ioremapfree(map); 1467 } 1468 1469 static __inline__ struct drm_local_map * 1470 drm_core_findmap(struct drm_device *dev, unsigned long offset) 1471 { 1472 struct drm_map_list *_entry; 1473 1474 list_for_each_entry(_entry, &dev->maplist, head) { 1475 if (offset == (unsigned long)_entry->map->handle) 1476 return _entry->map; 1477 } 1478 return NULL; 1479 } 1480 1481 static __inline__ void drm_core_dropmap(struct drm_map *map) 1482 { 1483 } 1484 1485 #include <drm/drm_mem_util.h> 1486 1487 struct drm_device *drm_dev_alloc(struct drm_driver *driver, 1488 struct device *parent); 1489 void drm_dev_ref(struct drm_device *dev); 1490 void drm_dev_unref(struct drm_device *dev); 1491 int drm_dev_register(struct drm_device *dev, unsigned long flags); 1492 void drm_dev_unregister(struct drm_device *dev); 1493 int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...); 1494 1495 /* FreeBSD compatibility macros */ 1496 #define VM_OBJECT_WLOCK(object) VM_OBJECT_LOCK(object) 1497 #define VM_OBJECT_WUNLOCK(object) VM_OBJECT_UNLOCK(object) 1498 1499 #define DRM_PCIE_SPEED_25 1 1500 #define DRM_PCIE_SPEED_50 2 1501 #define DRM_PCIE_SPEED_80 4 1502 1503 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask); 1504 1505 /* XXX bad */ 1506 #define drm_can_sleep() (HZ & 1) 1507 1508 #endif /* __KERNEL__ */ 1509 #endif /* _DRM_P_H_ */ 1510