| 1 | /** |
| 2 | * \file drmP.h |
| 3 | * Private header for Direct Rendering Manager |
| 4 | * |
| 5 | * \author Rickard E. (Rik) Faith <faith@valinux.com> |
| 6 | * \author Gareth Hughes <gareth@valinux.com> |
| 7 | */ |
| 8 | |
| 9 | /* |
| 10 | * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. |
| 11 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. |
| 12 | * Copyright (c) 2009-2010, Code Aurora Forum. |
| 13 | * All rights reserved. |
| 14 | * |
| 15 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 16 | * copy of this software and associated documentation files (the "Software"), |
| 17 | * to deal in the Software without restriction, including without limitation |
| 18 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 19 | * and/or sell copies of the Software, and to permit persons to whom the |
| 20 | * Software is furnished to do so, subject to the following conditions: |
| 21 | * |
| 22 | * The above copyright notice and this permission notice (including the next |
| 23 | * paragraph) shall be included in all copies or substantial portions of the |
| 24 | * Software. |
| 25 | * |
| 26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 27 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 28 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 29 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 30 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 31 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 32 | * OTHER DEALINGS IN THE SOFTWARE. |
| 33 | */ |
| 34 | |
| 35 | #ifndef _DRM_P_H_ |
| 36 | #define _DRM_P_H_ |
| 37 | |
| 38 | #ifdef __KERNEL__ |
| 39 | #ifdef __alpha__ |
| 40 | /* add include of current.h so that "current" is defined |
| 41 | * before static inline funcs in wait.h. Doing this so we |
| 42 | * can build the DRM (part of PI DRI). 4/21/2000 S + B */ |
| 43 | #include <asm/current.h> |
| 44 | #endif /* __alpha__ */ |
| 45 | #include <linux/kernel.h> |
| 46 | #include <linux/kref.h> |
| 47 | #include <linux/miscdevice.h> |
| 48 | #include <linux/fs.h> |
| 49 | #include <linux/init.h> |
| 50 | #include <linux/file.h> |
| 51 | #include <linux/platform_device.h> |
| 52 | #include <linux/pci.h> |
| 53 | #include <linux/jiffies.h> |
| 54 | #include <linux/dma-mapping.h> |
| 55 | #include <linux/mm.h> |
| 56 | #include <linux/cdev.h> |
| 57 | #include <linux/mutex.h> |
| 58 | #include <linux/io.h> |
| 59 | #include <linux/slab.h> |
| 60 | #include <linux/ratelimit.h> |
| 61 | #if defined(__alpha__) || defined(__powerpc__) |
| 62 | #include <asm/pgtable.h> /* For pte_wrprotect */ |
| 63 | #endif |
| 64 | #include <asm/mman.h> |
| 65 | #include <asm/uaccess.h> |
| 66 | #include <linux/types.h> |
| 67 | #include <linux/agp_backend.h> |
| 68 | #include <linux/workqueue.h> |
| 69 | #include <linux/poll.h> |
| 70 | #include <asm/pgalloc.h> |
| 71 | #include <drm/drm.h> |
| 72 | #include <drm/drm_sarea.h> |
| 73 | #include <drm/drm_vma_manager.h> |
| 74 | |
| 75 | #include <linux/idr.h> |
| 76 | |
| 77 | #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE))) |
| 78 | |
| 79 | struct module; |
| 80 | |
| 81 | struct drm_file; |
| 82 | struct drm_device; |
| 83 | |
| 84 | struct device_node; |
| 85 | struct videomode; |
| 86 | |
| 87 | #include <drm/drm_os_linux.h> |
| 88 | #include <drm/drm_hashtab.h> |
| 89 | #include <drm/drm_mm.h> |
| 90 | |
| 91 | /* |
| 92 | * 4 debug categories are defined: |
| 93 | * |
| 94 | * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ... |
| 95 | * This is the category used by the DRM_DEBUG() macro. |
| 96 | * |
| 97 | * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ... |
| 98 | * This is the category used by the DRM_DEBUG_DRIVER() macro. |
| 99 | * |
| 100 | * KMS: used in the modesetting code. |
| 101 | * This is the category used by the DRM_DEBUG_KMS() macro. |
| 102 | * |
| 103 | * PRIME: used in the prime code. |
| 104 | * This is the category used by the DRM_DEBUG_PRIME() macro. |
| 105 | * |
| 106 | * Enabling verbose debug messages is done through the drm.debug parameter, |
| 107 | * each category being enabled by a bit. |
| 108 | * |
| 109 | * drm.debug=0x1 will enable CORE messages |
| 110 | * drm.debug=0x2 will enable DRIVER messages |
| 111 | * drm.debug=0x3 will enable CORE and DRIVER messages |
| 112 | * ... |
| 113 | * drm.debug=0xf will enable all messages |
| 114 | * |
| 115 | * An interesting feature is that it's possible to enable verbose logging at |
| 116 | * run-time by echoing the debug value in its sysfs node: |
| 117 | * # echo 0xf > /sys/module/drm/parameters/debug |
| 118 | */ |
| 119 | #define DRM_UT_CORE 0x01 |
| 120 | #define DRM_UT_DRIVER 0x02 |
| 121 | #define DRM_UT_KMS 0x04 |
| 122 | #define DRM_UT_PRIME 0x08 |
| 123 | |
| 124 | extern __printf(2, 3) |
| 125 | void drm_ut_debug_printk(const char *function_name, |
| 126 | const char *format, ...); |
| 127 | extern __printf(2, 3) |
| 128 | int drm_err(const char *func, const char *format, ...); |
| 129 | |
| 130 | /***********************************************************************/ |
| 131 | /** \name DRM template customization defaults */ |
| 132 | /*@{*/ |
| 133 | |
| 134 | /* driver capabilities and requirements mask */ |
| 135 | #define DRIVER_USE_AGP 0x1 |
| 136 | #define DRIVER_PCI_DMA 0x8 |
| 137 | #define DRIVER_SG 0x10 |
| 138 | #define DRIVER_HAVE_DMA 0x20 |
| 139 | #define DRIVER_HAVE_IRQ 0x40 |
| 140 | #define DRIVER_IRQ_SHARED 0x80 |
| 141 | #define DRIVER_GEM 0x1000 |
| 142 | #define DRIVER_MODESET 0x2000 |
| 143 | #define DRIVER_PRIME 0x4000 |
| 144 | #define DRIVER_RENDER 0x8000 |
| 145 | |
| 146 | /***********************************************************************/ |
| 147 | /** \name Begin the DRM... */ |
| 148 | /*@{*/ |
| 149 | |
| 150 | #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then |
| 151 | also include looping detection. */ |
| 152 | |
| 153 | #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */ |
| 154 | #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */ |
| 155 | #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */ |
| 156 | |
| 157 | #define DRM_MAP_HASH_OFFSET 0x10000000 |
| 158 | |
| 159 | /*@}*/ |
| 160 | |
| 161 | /***********************************************************************/ |
| 162 | /** \name Macros to make printk easier */ |
| 163 | /*@{*/ |
| 164 | |
| 165 | /** |
| 166 | * Error output. |
| 167 | * |
| 168 | * \param fmt printf() like format string. |
| 169 | * \param arg arguments |
| 170 | */ |
| 171 | #define DRM_ERROR(fmt, ...) \ |
| 172 | drm_err(__func__, fmt, ##__VA_ARGS__) |
| 173 | |
| 174 | /** |
| 175 | * Rate limited error output. Like DRM_ERROR() but won't flood the log. |
| 176 | * |
| 177 | * \param fmt printf() like format string. |
| 178 | * \param arg arguments |
| 179 | */ |
| 180 | #define DRM_ERROR_RATELIMITED(fmt, ...) \ |
| 181 | ({ \ |
| 182 | static DEFINE_RATELIMIT_STATE(_rs, \ |
| 183 | DEFAULT_RATELIMIT_INTERVAL, \ |
| 184 | DEFAULT_RATELIMIT_BURST); \ |
| 185 | \ |
| 186 | if (__ratelimit(&_rs)) \ |
| 187 | drm_err(__func__, fmt, ##__VA_ARGS__); \ |
| 188 | }) |
| 189 | |
| 190 | #define DRM_INFO(fmt, ...) \ |
| 191 | printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) |
| 192 | |
| 193 | #define DRM_INFO_ONCE(fmt, ...) \ |
| 194 | printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) |
| 195 | |
| 196 | /** |
| 197 | * Debug output. |
| 198 | * |
| 199 | * \param fmt printf() like format string. |
| 200 | * \param arg arguments |
| 201 | */ |
| 202 | #if DRM_DEBUG_CODE |
| 203 | #define DRM_DEBUG(fmt, args...) \ |
| 204 | do { \ |
| 205 | if (unlikely(drm_debug & DRM_UT_CORE)) \ |
| 206 | drm_ut_debug_printk(__func__, fmt, ##args); \ |
| 207 | } while (0) |
| 208 | |
| 209 | #define DRM_DEBUG_DRIVER(fmt, args...) \ |
| 210 | do { \ |
| 211 | if (unlikely(drm_debug & DRM_UT_DRIVER)) \ |
| 212 | drm_ut_debug_printk(__func__, fmt, ##args); \ |
| 213 | } while (0) |
| 214 | #define DRM_DEBUG_KMS(fmt, args...) \ |
| 215 | do { \ |
| 216 | if (unlikely(drm_debug & DRM_UT_KMS)) \ |
| 217 | drm_ut_debug_printk(__func__, fmt, ##args); \ |
| 218 | } while (0) |
| 219 | #define DRM_DEBUG_PRIME(fmt, args...) \ |
| 220 | do { \ |
| 221 | if (unlikely(drm_debug & DRM_UT_PRIME)) \ |
| 222 | drm_ut_debug_printk(__func__, fmt, ##args); \ |
| 223 | } while (0) |
| 224 | #else |
| 225 | #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0) |
| 226 | #define DRM_DEBUG_KMS(fmt, args...) do { } while (0) |
| 227 | #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0) |
| 228 | #define DRM_DEBUG(fmt, arg...) do { } while (0) |
| 229 | #endif |
| 230 | |
| 231 | /*@}*/ |
| 232 | |
| 233 | /***********************************************************************/ |
| 234 | /** \name Internal types and structures */ |
| 235 | /*@{*/ |
| 236 | |
| 237 | #define DRM_IF_VERSION(maj, min) (maj << 16 | min) |
| 238 | |
| 239 | /** |
| 240 | * Test that the hardware lock is held by the caller, returning otherwise. |
| 241 | * |
| 242 | * \param dev DRM device. |
| 243 | * \param filp file pointer of the caller. |
| 244 | */ |
| 245 | #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \ |
| 246 | do { \ |
| 247 | if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \ |
| 248 | _file_priv->master->lock.file_priv != _file_priv) { \ |
| 249 | DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\ |
| 250 | __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\ |
| 251 | _file_priv->master->lock.file_priv, _file_priv); \ |
| 252 | return -EINVAL; \ |
| 253 | } \ |
| 254 | } while (0) |
| 255 | |
| 256 | /** |
| 257 | * Ioctl function type. |
| 258 | * |
| 259 | * \param inode device inode. |
| 260 | * \param file_priv DRM file private pointer. |
| 261 | * \param cmd command. |
| 262 | * \param arg argument. |
| 263 | */ |
| 264 | typedef int drm_ioctl_t(struct drm_device *dev, void *data, |
| 265 | struct drm_file *file_priv); |
| 266 | |
| 267 | typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd, |
| 268 | unsigned long arg); |
| 269 | |
| 270 | #define DRM_IOCTL_NR(n) _IOC_NR(n) |
| 271 | #define DRM_MAJOR 226 |
| 272 | |
| 273 | #define DRM_AUTH 0x1 |
| 274 | #define DRM_MASTER 0x2 |
| 275 | #define DRM_ROOT_ONLY 0x4 |
| 276 | #define DRM_CONTROL_ALLOW 0x8 |
| 277 | #define DRM_UNLOCKED 0x10 |
| 278 | #define DRM_RENDER_ALLOW 0x20 |
| 279 | |
| 280 | struct drm_ioctl_desc { |
| 281 | unsigned int cmd; |
| 282 | int flags; |
| 283 | drm_ioctl_t *func; |
| 284 | unsigned int cmd_drv; |
| 285 | const char *name; |
| 286 | }; |
| 287 | |
| 288 | /** |
| 289 | * Creates a driver or general drm_ioctl_desc array entry for the given |
| 290 | * ioctl, for use by drm_ioctl(). |
| 291 | */ |
| 292 | |
| 293 | #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ |
| 294 | [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl} |
| 295 | |
| 296 | struct drm_magic_entry { |
| 297 | struct list_head head; |
| 298 | struct drm_hash_item hash_item; |
| 299 | struct drm_file *priv; |
| 300 | }; |
| 301 | |
| 302 | struct drm_vma_entry { |
| 303 | struct list_head head; |
| 304 | struct vm_area_struct *vma; |
| 305 | pid_t pid; |
| 306 | }; |
| 307 | |
| 308 | /** |
| 309 | * DMA buffer. |
| 310 | */ |
| 311 | struct drm_buf { |
| 312 | int idx; /**< Index into master buflist */ |
| 313 | int total; /**< Buffer size */ |
| 314 | int order; /**< log-base-2(total) */ |
| 315 | int used; /**< Amount of buffer in use (for DMA) */ |
| 316 | unsigned long offset; /**< Byte offset (used internally) */ |
| 317 | void *address; /**< Address of buffer */ |
| 318 | unsigned long bus_address; /**< Bus address of buffer */ |
| 319 | struct drm_buf *next; /**< Kernel-only: used for free list */ |
| 320 | __volatile__ int waiting; /**< On kernel DMA queue */ |
| 321 | __volatile__ int pending; /**< On hardware DMA queue */ |
| 322 | struct drm_file *file_priv; /**< Private of holding file descr */ |
| 323 | int context; /**< Kernel queue for this buffer */ |
| 324 | int while_locked; /**< Dispatch this buffer while locked */ |
| 325 | enum { |
| 326 | DRM_LIST_NONE = 0, |
| 327 | DRM_LIST_FREE = 1, |
| 328 | DRM_LIST_WAIT = 2, |
| 329 | DRM_LIST_PEND = 3, |
| 330 | DRM_LIST_PRIO = 4, |
| 331 | DRM_LIST_RECLAIM = 5 |
| 332 | } list; /**< Which list we're on */ |
| 333 | |
| 334 | int dev_priv_size; /**< Size of buffer private storage */ |
| 335 | void *dev_private; /**< Per-buffer private storage */ |
| 336 | }; |
| 337 | |
| 338 | /** bufs is one longer than it has to be */ |
| 339 | struct drm_waitlist { |
| 340 | int count; /**< Number of possible buffers */ |
| 341 | struct drm_buf **bufs; /**< List of pointers to buffers */ |
| 342 | struct drm_buf **rp; /**< Read pointer */ |
| 343 | struct drm_buf **wp; /**< Write pointer */ |
| 344 | struct drm_buf **end; /**< End pointer */ |
| 345 | spinlock_t read_lock; |
| 346 | spinlock_t write_lock; |
| 347 | }; |
| 348 | |
| 349 | struct drm_freelist { |
| 350 | int initialized; /**< Freelist in use */ |
| 351 | atomic_t count; /**< Number of free buffers */ |
| 352 | struct drm_buf *next; /**< End pointer */ |
| 353 | |
| 354 | wait_queue_head_t waiting; /**< Processes waiting on free bufs */ |
| 355 | int low_mark; /**< Low water mark */ |
| 356 | int high_mark; /**< High water mark */ |
| 357 | atomic_t wfh; /**< If waiting for high mark */ |
| 358 | spinlock_t lock; |
| 359 | }; |
| 360 | |
| 361 | typedef struct drm_dma_handle { |
| 362 | dma_addr_t busaddr; |
| 363 | void *vaddr; |
| 364 | size_t size; |
| 365 | } drm_dma_handle_t; |
| 366 | |
| 367 | /** |
| 368 | * Buffer entry. There is one of this for each buffer size order. |
| 369 | */ |
| 370 | struct drm_buf_entry { |
| 371 | int buf_size; /**< size */ |
| 372 | int buf_count; /**< number of buffers */ |
| 373 | struct drm_buf *buflist; /**< buffer list */ |
| 374 | int seg_count; |
| 375 | int page_order; |
| 376 | struct drm_dma_handle **seglist; |
| 377 | |
| 378 | struct drm_freelist freelist; |
| 379 | }; |
| 380 | |
| 381 | /* Event queued up for userspace to read */ |
| 382 | struct drm_pending_event { |
| 383 | struct drm_event *event; |
| 384 | struct list_head link; |
| 385 | struct drm_file *file_priv; |
| 386 | pid_t pid; /* pid of requester, no guarantee it's valid by the time |
| 387 | we deliver the event, for tracing only */ |
| 388 | void (*destroy)(struct drm_pending_event *event); |
| 389 | }; |
| 390 | |
| 391 | /* initial implementaton using a linked list - todo hashtab */ |
| 392 | struct drm_prime_file_private { |
| 393 | struct list_head head; |
| 394 | struct mutex lock; |
| 395 | }; |
| 396 | |
| 397 | /** File private data */ |
| 398 | struct drm_file { |
| 399 | unsigned always_authenticated :1; |
| 400 | unsigned authenticated :1; |
| 401 | /* Whether we're master for a minor. Protected by master_mutex */ |
| 402 | unsigned is_master :1; |
| 403 | /* true when the client has asked us to expose stereo 3D mode flags */ |
| 404 | unsigned stereo_allowed :1; |
| 405 | /* |
| 406 | * true if client understands CRTC primary planes and cursor planes |
| 407 | * in the plane list |
| 408 | */ |
| 409 | unsigned universal_planes:1; |
| 410 | |
| 411 | struct pid *pid; |
| 412 | kuid_t uid; |
| 413 | drm_magic_t magic; |
| 414 | struct list_head lhead; |
| 415 | struct drm_minor *minor; |
| 416 | unsigned long lock_count; |
| 417 | |
| 418 | /** Mapping of mm object handles to object pointers. */ |
| 419 | struct idr object_idr; |
| 420 | /** Lock for synchronization of access to object_idr. */ |
| 421 | spinlock_t table_lock; |
| 422 | |
| 423 | struct file *filp; |
| 424 | void *driver_priv; |
| 425 | |
| 426 | struct drm_master *master; /* master this node is currently associated with |
| 427 | N.B. not always minor->master */ |
| 428 | /** |
| 429 | * fbs - List of framebuffers associated with this file. |
| 430 | * |
| 431 | * Protected by fbs_lock. Note that the fbs list holds a reference on |
| 432 | * the fb object to prevent it from untimely disappearing. |
| 433 | */ |
| 434 | struct list_head fbs; |
| 435 | struct mutex fbs_lock; |
| 436 | |
| 437 | wait_queue_head_t event_wait; |
| 438 | struct list_head event_list; |
| 439 | int event_space; |
| 440 | |
| 441 | struct drm_prime_file_private prime; |
| 442 | }; |
| 443 | |
| 444 | /** Wait queue */ |
| 445 | struct drm_queue { |
| 446 | atomic_t use_count; /**< Outstanding uses (+1) */ |
| 447 | atomic_t finalization; /**< Finalization in progress */ |
| 448 | atomic_t block_count; /**< Count of processes waiting */ |
| 449 | atomic_t block_read; /**< Queue blocked for reads */ |
| 450 | wait_queue_head_t read_queue; /**< Processes waiting on block_read */ |
| 451 | atomic_t block_write; /**< Queue blocked for writes */ |
| 452 | wait_queue_head_t write_queue; /**< Processes waiting on block_write */ |
| 453 | atomic_t total_queued; /**< Total queued statistic */ |
| 454 | atomic_t total_flushed; /**< Total flushes statistic */ |
| 455 | atomic_t total_locks; /**< Total locks statistics */ |
| 456 | enum drm_ctx_flags flags; /**< Context preserving and 2D-only */ |
| 457 | struct drm_waitlist waitlist; /**< Pending buffers */ |
| 458 | wait_queue_head_t flush_queue; /**< Processes waiting until flush */ |
| 459 | }; |
| 460 | |
| 461 | /** |
| 462 | * Lock data. |
| 463 | */ |
| 464 | struct drm_lock_data { |
| 465 | struct drm_hw_lock *hw_lock; /**< Hardware lock */ |
| 466 | /** Private of lock holder's file (NULL=kernel) */ |
| 467 | struct drm_file *file_priv; |
| 468 | wait_queue_head_t lock_queue; /**< Queue of blocked processes */ |
| 469 | unsigned long lock_time; /**< Time of last lock in jiffies */ |
| 470 | spinlock_t spinlock; |
| 471 | uint32_t kernel_waiters; |
| 472 | uint32_t user_waiters; |
| 473 | int idle_has_lock; |
| 474 | }; |
| 475 | |
| 476 | /** |
| 477 | * DMA data. |
| 478 | */ |
| 479 | struct drm_device_dma { |
| 480 | |
| 481 | struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */ |
| 482 | int buf_count; /**< total number of buffers */ |
| 483 | struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */ |
| 484 | int seg_count; |
| 485 | int page_count; /**< number of pages */ |
| 486 | unsigned long *pagelist; /**< page list */ |
| 487 | unsigned long byte_count; |
| 488 | enum { |
| 489 | _DRM_DMA_USE_AGP = 0x01, |
| 490 | _DRM_DMA_USE_SG = 0x02, |
| 491 | _DRM_DMA_USE_FB = 0x04, |
| 492 | _DRM_DMA_USE_PCI_RO = 0x08 |
| 493 | } flags; |
| 494 | |
| 495 | }; |
| 496 | |
| 497 | /** |
| 498 | * AGP memory entry. Stored as a doubly linked list. |
| 499 | */ |
| 500 | struct drm_agp_mem { |
| 501 | unsigned long handle; /**< handle */ |
| 502 | struct agp_memory *memory; |
| 503 | unsigned long bound; /**< address */ |
| 504 | int pages; |
| 505 | struct list_head head; |
| 506 | }; |
| 507 | |
| 508 | /** |
| 509 | * AGP data. |
| 510 | * |
| 511 | * \sa drm_agp_init() and drm_device::agp. |
| 512 | */ |
| 513 | struct drm_agp_head { |
| 514 | struct agp_kern_info agp_info; /**< AGP device information */ |
| 515 | struct list_head memory; |
| 516 | unsigned long mode; /**< AGP mode */ |
| 517 | struct agp_bridge_data *bridge; |
| 518 | int enabled; /**< whether the AGP bus as been enabled */ |
| 519 | int acquired; /**< whether the AGP device has been acquired */ |
| 520 | unsigned long base; |
| 521 | int agp_mtrr; |
| 522 | int cant_use_aperture; |
| 523 | unsigned long page_mask; |
| 524 | }; |
| 525 | |
| 526 | /** |
| 527 | * Scatter-gather memory. |
| 528 | */ |
| 529 | struct drm_sg_mem { |
| 530 | unsigned long handle; |
| 531 | void *virtual; |
| 532 | int pages; |
| 533 | struct page **pagelist; |
| 534 | dma_addr_t *busaddr; |
| 535 | }; |
| 536 | |
| 537 | struct drm_sigdata { |
| 538 | int context; |
| 539 | struct drm_hw_lock *lock; |
| 540 | }; |
| 541 | |
| 542 | |
| 543 | /** |
| 544 | * Kernel side of a mapping |
| 545 | */ |
| 546 | struct drm_local_map { |
| 547 | resource_size_t offset; /**< Requested physical address (0 for SAREA)*/ |
| 548 | unsigned long size; /**< Requested physical size (bytes) */ |
| 549 | enum drm_map_type type; /**< Type of memory to map */ |
| 550 | enum drm_map_flags flags; /**< Flags */ |
| 551 | void *handle; /**< User-space: "Handle" to pass to mmap() */ |
| 552 | /**< Kernel-space: kernel-virtual address */ |
| 553 | int mtrr; /**< MTRR slot used */ |
| 554 | }; |
| 555 | |
| 556 | typedef struct drm_local_map drm_local_map_t; |
| 557 | |
| 558 | /** |
| 559 | * Mappings list |
| 560 | */ |
| 561 | struct drm_map_list { |
| 562 | struct list_head head; /**< list head */ |
| 563 | struct drm_hash_item hash; |
| 564 | struct drm_local_map *map; /**< mapping */ |
| 565 | uint64_t user_token; |
| 566 | struct drm_master *master; |
| 567 | }; |
| 568 | |
| 569 | /** |
| 570 | * Context handle list |
| 571 | */ |
| 572 | struct drm_ctx_list { |
| 573 | struct list_head head; /**< list head */ |
| 574 | drm_context_t handle; /**< context handle */ |
| 575 | struct drm_file *tag; /**< associated fd private data */ |
| 576 | }; |
| 577 | |
| 578 | /* location of GART table */ |
| 579 | #define DRM_ATI_GART_MAIN 1 |
| 580 | #define DRM_ATI_GART_FB 2 |
| 581 | |
| 582 | #define DRM_ATI_GART_PCI 1 |
| 583 | #define DRM_ATI_GART_PCIE 2 |
| 584 | #define DRM_ATI_GART_IGP 3 |
| 585 | |
| 586 | struct drm_ati_pcigart_info { |
| 587 | int gart_table_location; |
| 588 | int gart_reg_if; |
| 589 | void *addr; |
| 590 | dma_addr_t bus_addr; |
| 591 | dma_addr_t table_mask; |
| 592 | struct drm_dma_handle *table_handle; |
| 593 | struct drm_local_map mapping; |
| 594 | int table_size; |
| 595 | }; |
| 596 | |
| 597 | /** |
| 598 | * This structure defines the drm_mm memory object, which will be used by the |
| 599 | * DRM for its buffer objects. |
| 600 | */ |
| 601 | struct drm_gem_object { |
| 602 | /** Reference count of this object */ |
| 603 | struct kref refcount; |
| 604 | |
| 605 | /** |
| 606 | * handle_count - gem file_priv handle count of this object |
| 607 | * |
| 608 | * Each handle also holds a reference. Note that when the handle_count |
| 609 | * drops to 0 any global names (e.g. the id in the flink namespace) will |
| 610 | * be cleared. |
| 611 | * |
| 612 | * Protected by dev->object_name_lock. |
| 613 | * */ |
| 614 | unsigned handle_count; |
| 615 | |
| 616 | /** Related drm device */ |
| 617 | struct drm_device *dev; |
| 618 | |
| 619 | /** File representing the shmem storage */ |
| 620 | struct file *filp; |
| 621 | |
| 622 | /* Mapping info for this object */ |
| 623 | struct drm_vma_offset_node vma_node; |
| 624 | |
| 625 | /** |
| 626 | * Size of the object, in bytes. Immutable over the object's |
| 627 | * lifetime. |
| 628 | */ |
| 629 | size_t size; |
| 630 | |
| 631 | /** |
| 632 | * Global name for this object, starts at 1. 0 means unnamed. |
| 633 | * Access is covered by the object_name_lock in the related drm_device |
| 634 | */ |
| 635 | int name; |
| 636 | |
| 637 | /** |
| 638 | * Memory domains. These monitor which caches contain read/write data |
| 639 | * related to the object. When transitioning from one set of domains |
| 640 | * to another, the driver is called to ensure that caches are suitably |
| 641 | * flushed and invalidated |
| 642 | */ |
| 643 | uint32_t read_domains; |
| 644 | uint32_t write_domain; |
| 645 | |
| 646 | /** |
| 647 | * While validating an exec operation, the |
| 648 | * new read/write domain values are computed here. |
| 649 | * They will be transferred to the above values |
| 650 | * at the point that any cache flushing occurs |
| 651 | */ |
| 652 | uint32_t pending_read_domains; |
| 653 | uint32_t pending_write_domain; |
| 654 | |
| 655 | /** |
| 656 | * dma_buf - dma buf associated with this GEM object |
| 657 | * |
| 658 | * Pointer to the dma-buf associated with this gem object (either |
| 659 | * through importing or exporting). We break the resulting reference |
| 660 | * loop when the last gem handle for this object is released. |
| 661 | * |
| 662 | * Protected by obj->object_name_lock |
| 663 | */ |
| 664 | struct dma_buf *dma_buf; |
| 665 | |
| 666 | /** |
| 667 | * import_attach - dma buf attachment backing this object |
| 668 | * |
| 669 | * Any foreign dma_buf imported as a gem object has this set to the |
| 670 | * attachment point for the device. This is invariant over the lifetime |
| 671 | * of a gem object. |
| 672 | * |
| 673 | * The driver's ->gem_free_object callback is responsible for cleaning |
| 674 | * up the dma_buf attachment and references acquired at import time. |
| 675 | * |
| 676 | * Note that the drm gem/prime core does not depend upon drivers setting |
| 677 | * this field any more. So for drivers where this doesn't make sense |
| 678 | * (e.g. virtual devices or a displaylink behind an usb bus) they can |
| 679 | * simply leave it as NULL. |
| 680 | */ |
| 681 | struct dma_buf_attachment *import_attach; |
| 682 | }; |
| 683 | |
| 684 | #include <drm/drm_crtc.h> |
| 685 | |
| 686 | /** |
| 687 | * struct drm_master - drm master structure |
| 688 | * |
| 689 | * @refcount: Refcount for this master object. |
| 690 | * @minor: Link back to minor char device we are master for. Immutable. |
| 691 | * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex. |
| 692 | * @unique_len: Length of unique field. Protected by drm_global_mutex. |
| 693 | * @unique_size: Amount allocated. Protected by drm_global_mutex. |
| 694 | * @magiclist: Hash of used authentication tokens. Protected by struct_mutex. |
| 695 | * @magicfree: List of used authentication tokens. Protected by struct_mutex. |
| 696 | * @lock: DRI lock information. |
| 697 | * @driver_priv: Pointer to driver-private information. |
| 698 | */ |
| 699 | struct drm_master { |
| 700 | struct kref refcount; |
| 701 | struct drm_minor *minor; |
| 702 | char *unique; |
| 703 | int unique_len; |
| 704 | int unique_size; |
| 705 | struct drm_open_hash magiclist; |
| 706 | struct list_head magicfree; |
| 707 | struct drm_lock_data lock; |
| 708 | void *driver_priv; |
| 709 | }; |
| 710 | |
| 711 | /* Size of ringbuffer for vblank timestamps. Just double-buffer |
| 712 | * in initial implementation. |
| 713 | */ |
| 714 | #define DRM_VBLANKTIME_RBSIZE 2 |
| 715 | |
| 716 | /* Flags and return codes for get_vblank_timestamp() driver function. */ |
| 717 | #define DRM_CALLED_FROM_VBLIRQ 1 |
| 718 | #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0) |
| 719 | #define DRM_VBLANKTIME_INVBL (1 << 1) |
| 720 | |
| 721 | /* get_scanout_position() return flags */ |
| 722 | #define DRM_SCANOUTPOS_VALID (1 << 0) |
| 723 | #define DRM_SCANOUTPOS_INVBL (1 << 1) |
| 724 | #define DRM_SCANOUTPOS_ACCURATE (1 << 2) |
| 725 | |
| 726 | struct drm_bus { |
| 727 | int (*set_busid)(struct drm_device *dev, struct drm_master *master); |
| 728 | }; |
| 729 | |
| 730 | /** |
| 731 | * DRM driver structure. This structure represent the common code for |
| 732 | * a family of cards. There will one drm_device for each card present |
| 733 | * in this family |
| 734 | */ |
| 735 | struct drm_driver { |
| 736 | int (*load) (struct drm_device *, unsigned long flags); |
| 737 | int (*firstopen) (struct drm_device *); |
| 738 | int (*open) (struct drm_device *, struct drm_file *); |
| 739 | void (*preclose) (struct drm_device *, struct drm_file *file_priv); |
| 740 | void (*postclose) (struct drm_device *, struct drm_file *); |
| 741 | void (*lastclose) (struct drm_device *); |
| 742 | int (*unload) (struct drm_device *); |
| 743 | int (*suspend) (struct drm_device *, pm_message_t state); |
| 744 | int (*resume) (struct drm_device *); |
| 745 | int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv); |
| 746 | int (*dma_quiescent) (struct drm_device *); |
| 747 | int (*context_dtor) (struct drm_device *dev, int context); |
| 748 | |
| 749 | /** |
| 750 | * get_vblank_counter - get raw hardware vblank counter |
| 751 | * @dev: DRM device |
| 752 | * @crtc: counter to fetch |
| 753 | * |
| 754 | * Driver callback for fetching a raw hardware vblank counter for @crtc. |
| 755 | * If a device doesn't have a hardware counter, the driver can simply |
| 756 | * return the value of drm_vblank_count. The DRM core will account for |
| 757 | * missed vblank events while interrupts where disabled based on system |
| 758 | * timestamps. |
| 759 | * |
| 760 | * Wraparound handling and loss of events due to modesetting is dealt |
| 761 | * with in the DRM core code. |
| 762 | * |
| 763 | * RETURNS |
| 764 | * Raw vblank counter value. |
| 765 | */ |
| 766 | u32 (*get_vblank_counter) (struct drm_device *dev, int crtc); |
| 767 | |
| 768 | /** |
| 769 | * enable_vblank - enable vblank interrupt events |
| 770 | * @dev: DRM device |
| 771 | * @crtc: which irq to enable |
| 772 | * |
| 773 | * Enable vblank interrupts for @crtc. If the device doesn't have |
| 774 | * a hardware vblank counter, this routine should be a no-op, since |
| 775 | * interrupts will have to stay on to keep the count accurate. |
| 776 | * |
| 777 | * RETURNS |
| 778 | * Zero on success, appropriate errno if the given @crtc's vblank |
| 779 | * interrupt cannot be enabled. |
| 780 | */ |
| 781 | int (*enable_vblank) (struct drm_device *dev, int crtc); |
| 782 | |
| 783 | /** |
| 784 | * disable_vblank - disable vblank interrupt events |
| 785 | * @dev: DRM device |
| 786 | * @crtc: which irq to enable |
| 787 | * |
| 788 | * Disable vblank interrupts for @crtc. If the device doesn't have |
| 789 | * a hardware vblank counter, this routine should be a no-op, since |
| 790 | * interrupts will have to stay on to keep the count accurate. |
| 791 | */ |
| 792 | void (*disable_vblank) (struct drm_device *dev, int crtc); |
| 793 | |
| 794 | /** |
| 795 | * Called by \c drm_device_is_agp. Typically used to determine if a |
| 796 | * card is really attached to AGP or not. |
| 797 | * |
| 798 | * \param dev DRM device handle |
| 799 | * |
| 800 | * \returns |
| 801 | * One of three values is returned depending on whether or not the |
| 802 | * card is absolutely \b not AGP (return of 0), absolutely \b is AGP |
| 803 | * (return of 1), or may or may not be AGP (return of 2). |
| 804 | */ |
| 805 | int (*device_is_agp) (struct drm_device *dev); |
| 806 | |
| 807 | /** |
| 808 | * Called by vblank timestamping code. |
| 809 | * |
| 810 | * Return the current display scanout position from a crtc, and an |
| 811 | * optional accurate ktime_get timestamp of when position was measured. |
| 812 | * |
| 813 | * \param dev DRM device. |
| 814 | * \param crtc Id of the crtc to query. |
| 815 | * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0). |
| 816 | * \param *vpos Target location for current vertical scanout position. |
| 817 | * \param *hpos Target location for current horizontal scanout position. |
| 818 | * \param *stime Target location for timestamp taken immediately before |
| 819 | * scanout position query. Can be NULL to skip timestamp. |
| 820 | * \param *etime Target location for timestamp taken immediately after |
| 821 | * scanout position query. Can be NULL to skip timestamp. |
| 822 | * |
| 823 | * Returns vpos as a positive number while in active scanout area. |
| 824 | * Returns vpos as a negative number inside vblank, counting the number |
| 825 | * of scanlines to go until end of vblank, e.g., -1 means "one scanline |
| 826 | * until start of active scanout / end of vblank." |
| 827 | * |
| 828 | * \return Flags, or'ed together as follows: |
| 829 | * |
| 830 | * DRM_SCANOUTPOS_VALID = Query successful. |
| 831 | * DRM_SCANOUTPOS_INVBL = Inside vblank. |
| 832 | * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of |
| 833 | * this flag means that returned position may be offset by a constant |
| 834 | * but unknown small number of scanlines wrt. real scanout position. |
| 835 | * |
| 836 | */ |
| 837 | int (*get_scanout_position) (struct drm_device *dev, int crtc, |
| 838 | unsigned int flags, |
| 839 | int *vpos, int *hpos, ktime_t *stime, |
| 840 | ktime_t *etime); |
| 841 | |
| 842 | /** |
| 843 | * Called by \c drm_get_last_vbltimestamp. Should return a precise |
| 844 | * timestamp when the most recent VBLANK interval ended or will end. |
| 845 | * |
| 846 | * Specifically, the timestamp in @vblank_time should correspond as |
| 847 | * closely as possible to the time when the first video scanline of |
| 848 | * the video frame after the end of VBLANK will start scanning out, |
| 849 | * the time immediately after end of the VBLANK interval. If the |
| 850 | * @crtc is currently inside VBLANK, this will be a time in the future. |
| 851 | * If the @crtc is currently scanning out a frame, this will be the |
| 852 | * past start time of the current scanout. This is meant to adhere |
| 853 | * to the OpenML OML_sync_control extension specification. |
| 854 | * |
| 855 | * \param dev dev DRM device handle. |
| 856 | * \param crtc crtc for which timestamp should be returned. |
| 857 | * \param *max_error Maximum allowable timestamp error in nanoseconds. |
| 858 | * Implementation should strive to provide timestamp |
| 859 | * with an error of at most *max_error nanoseconds. |
| 860 | * Returns true upper bound on error for timestamp. |
| 861 | * \param *vblank_time Target location for returned vblank timestamp. |
| 862 | * \param flags 0 = Defaults, no special treatment needed. |
| 863 | * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank |
| 864 | * irq handler. Some drivers need to apply some workarounds |
| 865 | * for gpu-specific vblank irq quirks if flag is set. |
| 866 | * |
| 867 | * \returns |
| 868 | * Zero if timestamping isn't supported in current display mode or a |
| 869 | * negative number on failure. A positive status code on success, |
| 870 | * which describes how the vblank_time timestamp was computed. |
| 871 | */ |
| 872 | int (*get_vblank_timestamp) (struct drm_device *dev, int crtc, |
| 873 | int *max_error, |
| 874 | struct timeval *vblank_time, |
| 875 | unsigned flags); |
| 876 | |
| 877 | /* these have to be filled in */ |
| 878 | |
| 879 | irqreturn_t(*irq_handler) (int irq, void *arg); |
| 880 | void (*irq_preinstall) (struct drm_device *dev); |
| 881 | int (*irq_postinstall) (struct drm_device *dev); |
| 882 | void (*irq_uninstall) (struct drm_device *dev); |
| 883 | |
| 884 | /* Master routines */ |
| 885 | int (*master_create)(struct drm_device *dev, struct drm_master *master); |
| 886 | void (*master_destroy)(struct drm_device *dev, struct drm_master *master); |
| 887 | /** |
| 888 | * master_set is called whenever the minor master is set. |
| 889 | * master_drop is called whenever the minor master is dropped. |
| 890 | */ |
| 891 | |
| 892 | int (*master_set)(struct drm_device *dev, struct drm_file *file_priv, |
| 893 | bool from_open); |
| 894 | void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv, |
| 895 | bool from_release); |
| 896 | |
| 897 | int (*debugfs_init)(struct drm_minor *minor); |
| 898 | void (*debugfs_cleanup)(struct drm_minor *minor); |
| 899 | |
| 900 | /** |
| 901 | * Driver-specific constructor for drm_gem_objects, to set up |
| 902 | * obj->driver_private. |
| 903 | * |
| 904 | * Returns 0 on success. |
| 905 | */ |
| 906 | void (*gem_free_object) (struct drm_gem_object *obj); |
| 907 | int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); |
| 908 | void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); |
| 909 | |
| 910 | /* prime: */ |
| 911 | /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */ |
| 912 | int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv, |
| 913 | uint32_t handle, uint32_t flags, int *prime_fd); |
| 914 | /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */ |
| 915 | int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv, |
| 916 | int prime_fd, uint32_t *handle); |
| 917 | /* export GEM -> dmabuf */ |
| 918 | struct dma_buf * (*gem_prime_export)(struct drm_device *dev, |
| 919 | struct drm_gem_object *obj, int flags); |
| 920 | /* import dmabuf -> GEM */ |
| 921 | struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, |
| 922 | struct dma_buf *dma_buf); |
| 923 | /* low-level interface used by drm_gem_prime_{import,export} */ |
| 924 | int (*gem_prime_pin)(struct drm_gem_object *obj); |
| 925 | void (*gem_prime_unpin)(struct drm_gem_object *obj); |
| 926 | struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj); |
| 927 | struct drm_gem_object *(*gem_prime_import_sg_table)( |
| 928 | struct drm_device *dev, size_t size, |
| 929 | struct sg_table *sgt); |
| 930 | void *(*gem_prime_vmap)(struct drm_gem_object *obj); |
| 931 | void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr); |
| 932 | int (*gem_prime_mmap)(struct drm_gem_object *obj, |
| 933 | struct vm_area_struct *vma); |
| 934 | |
| 935 | /* vga arb irq handler */ |
| 936 | void (*vgaarb_irq)(struct drm_device *dev, bool state); |
| 937 | |
| 938 | /* dumb alloc support */ |
| 939 | int (*dumb_create)(struct drm_file *file_priv, |
| 940 | struct drm_device *dev, |
| 941 | struct drm_mode_create_dumb *args); |
| 942 | int (*dumb_map_offset)(struct drm_file *file_priv, |
| 943 | struct drm_device *dev, uint32_t handle, |
| 944 | uint64_t *offset); |
| 945 | int (*dumb_destroy)(struct drm_file *file_priv, |
| 946 | struct drm_device *dev, |
| 947 | uint32_t handle); |
| 948 | |
| 949 | /* Driver private ops for this object */ |
| 950 | const struct vm_operations_struct *gem_vm_ops; |
| 951 | |
| 952 | int major; |
| 953 | int minor; |
| 954 | int patchlevel; |
| 955 | char *name; |
| 956 | char *desc; |
| 957 | char *date; |
| 958 | |
| 959 | u32 driver_features; |
| 960 | int dev_priv_size; |
| 961 | const struct drm_ioctl_desc *ioctls; |
| 962 | int num_ioctls; |
| 963 | const struct file_operations *fops; |
| 964 | struct drm_bus *bus; |
| 965 | |
| 966 | /* List of devices hanging off this driver with stealth attach. */ |
| 967 | struct list_head legacy_dev_list; |
| 968 | }; |
| 969 | |
| 970 | enum drm_minor_type { |
| 971 | DRM_MINOR_LEGACY, |
| 972 | DRM_MINOR_CONTROL, |
| 973 | DRM_MINOR_RENDER, |
| 974 | DRM_MINOR_CNT, |
| 975 | }; |
| 976 | |
| 977 | /** |
| 978 | * Info file list entry. This structure represents a debugfs or proc file to |
| 979 | * be created by the drm core |
| 980 | */ |
| 981 | struct drm_info_list { |
| 982 | const char *name; /** file name */ |
| 983 | int (*show)(struct seq_file*, void*); /** show callback */ |
| 984 | u32 driver_features; /**< Required driver features for this entry */ |
| 985 | void *data; |
| 986 | }; |
| 987 | |
| 988 | /** |
| 989 | * debugfs node structure. This structure represents a debugfs file. |
| 990 | */ |
| 991 | struct drm_info_node { |
| 992 | struct list_head list; |
| 993 | struct drm_minor *minor; |
| 994 | const struct drm_info_list *info_ent; |
| 995 | struct dentry *dent; |
| 996 | }; |
| 997 | |
| 998 | /** |
| 999 | * DRM minor structure. This structure represents a drm minor number. |
| 1000 | */ |
| 1001 | struct drm_minor { |
| 1002 | int index; /**< Minor device number */ |
| 1003 | int type; /**< Control or render */ |
| 1004 | struct device *kdev; /**< Linux device */ |
| 1005 | struct drm_device *dev; |
| 1006 | |
| 1007 | struct dentry *debugfs_root; |
| 1008 | |
| 1009 | struct list_head debugfs_list; |
| 1010 | struct mutex debugfs_lock; /* Protects debugfs_list. */ |
| 1011 | |
| 1012 | /* currently active master for this node. Protected by master_mutex */ |
| 1013 | struct drm_master *master; |
| 1014 | struct drm_mode_group mode_group; |
| 1015 | }; |
| 1016 | |
| 1017 | |
| 1018 | struct drm_pending_vblank_event { |
| 1019 | struct drm_pending_event base; |
| 1020 | int pipe; |
| 1021 | struct drm_event_vblank event; |
| 1022 | }; |
| 1023 | |
| 1024 | struct drm_vblank_crtc { |
| 1025 | struct drm_device *dev; /* pointer to the drm_device */ |
| 1026 | wait_queue_head_t queue; /**< VBLANK wait queue */ |
| 1027 | struct timeval time[DRM_VBLANKTIME_RBSIZE]; /**< timestamp of current count */ |
| 1028 | struct timer_list disable_timer; /* delayed disable timer */ |
| 1029 | atomic_t count; /**< number of VBLANK interrupts */ |
| 1030 | atomic_t refcount; /* number of users of vblank interruptsper crtc */ |
| 1031 | u32 last; /* protected by dev->vbl_lock, used */ |
| 1032 | /* for wraparound handling */ |
| 1033 | u32 last_wait; /* Last vblank seqno waited per CRTC */ |
| 1034 | unsigned int inmodeset; /* Display driver is setting mode */ |
| 1035 | int crtc; /* crtc index */ |
| 1036 | bool enabled; /* so we don't call enable more than |
| 1037 | once per disable */ |
| 1038 | }; |
| 1039 | |
| 1040 | /** |
| 1041 | * DRM device structure. This structure represent a complete card that |
| 1042 | * may contain multiple heads. |
| 1043 | */ |
| 1044 | struct drm_device { |
| 1045 | struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */ |
| 1046 | int if_version; /**< Highest interface version set */ |
| 1047 | |
| 1048 | /** \name Lifetime Management */ |
| 1049 | /*@{ */ |
| 1050 | struct kref ref; /**< Object ref-count */ |
| 1051 | struct device *dev; /**< Device structure of bus-device */ |
| 1052 | struct drm_driver *driver; /**< DRM driver managing the device */ |
| 1053 | void *dev_private; /**< DRM driver private data */ |
| 1054 | struct drm_minor *control; /**< Control node */ |
| 1055 | struct drm_minor *primary; /**< Primary node */ |
| 1056 | struct drm_minor *render; /**< Render node */ |
| 1057 | atomic_t unplugged; /**< Flag whether dev is dead */ |
| 1058 | struct inode *anon_inode; /**< inode for private address-space */ |
| 1059 | char *unique; /**< unique name of the device */ |
| 1060 | /*@} */ |
| 1061 | |
| 1062 | /** \name Locks */ |
| 1063 | /*@{ */ |
| 1064 | struct mutex struct_mutex; /**< For others */ |
| 1065 | struct mutex master_mutex; /**< For drm_minor::master and drm_file::is_master */ |
| 1066 | /*@} */ |
| 1067 | |
| 1068 | /** \name Usage Counters */ |
| 1069 | /*@{ */ |
| 1070 | int open_count; /**< Outstanding files open, protected by drm_global_mutex. */ |
| 1071 | spinlock_t buf_lock; /**< For drm_device::buf_use and a few other things. */ |
| 1072 | int buf_use; /**< Buffers in use -- cannot alloc */ |
| 1073 | atomic_t buf_alloc; /**< Buffer allocation in progress */ |
| 1074 | /*@} */ |
| 1075 | |
| 1076 | struct list_head filelist; |
| 1077 | |
| 1078 | /** \name Memory management */ |
| 1079 | /*@{ */ |
| 1080 | struct list_head maplist; /**< Linked list of regions */ |
| 1081 | struct drm_open_hash map_hash; /**< User token hash table for maps */ |
| 1082 | |
| 1083 | /** \name Context handle management */ |
| 1084 | /*@{ */ |
| 1085 | struct list_head ctxlist; /**< Linked list of context handles */ |
| 1086 | struct mutex ctxlist_mutex; /**< For ctxlist */ |
| 1087 | |
| 1088 | struct idr ctx_idr; |
| 1089 | |
| 1090 | struct list_head vmalist; /**< List of vmas (for debugging) */ |
| 1091 | |
| 1092 | /*@} */ |
| 1093 | |
| 1094 | /** \name DMA support */ |
| 1095 | /*@{ */ |
| 1096 | struct drm_device_dma *dma; /**< Optional pointer for DMA support */ |
| 1097 | /*@} */ |
| 1098 | |
| 1099 | /** \name Context support */ |
| 1100 | /*@{ */ |
| 1101 | bool irq_enabled; /**< True if irq handler is enabled */ |
| 1102 | int irq; |
| 1103 | |
| 1104 | __volatile__ long context_flag; /**< Context swapping flag */ |
| 1105 | int last_context; /**< Last current context */ |
| 1106 | /*@} */ |
| 1107 | |
| 1108 | /** \name VBLANK IRQ support */ |
| 1109 | /*@{ */ |
| 1110 | |
| 1111 | /* |
| 1112 | * At load time, disabling the vblank interrupt won't be allowed since |
| 1113 | * old clients may not call the modeset ioctl and therefore misbehave. |
| 1114 | * Once the modeset ioctl *has* been called though, we can safely |
| 1115 | * disable them when unused. |
| 1116 | */ |
| 1117 | bool vblank_disable_allowed; |
| 1118 | |
| 1119 | /* array of size num_crtcs */ |
| 1120 | struct drm_vblank_crtc *vblank; |
| 1121 | |
| 1122 | spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ |
| 1123 | spinlock_t vbl_lock; |
| 1124 | |
| 1125 | u32 max_vblank_count; /**< size of vblank counter register */ |
| 1126 | |
| 1127 | /** |
| 1128 | * List of events |
| 1129 | */ |
| 1130 | struct list_head vblank_event_list; |
| 1131 | spinlock_t event_lock; |
| 1132 | |
| 1133 | /*@} */ |
| 1134 | |
| 1135 | struct drm_agp_head *agp; /**< AGP data */ |
| 1136 | |
| 1137 | struct pci_dev *pdev; /**< PCI device structure */ |
| 1138 | #ifdef __alpha__ |
| 1139 | struct pci_controller *hose; |
| 1140 | #endif |
| 1141 | |
| 1142 | struct platform_device *platformdev; /**< Platform device struture */ |
| 1143 | struct usb_device *usbdev; |
| 1144 | |
| 1145 | struct drm_sg_mem *sg; /**< Scatter gather memory */ |
| 1146 | unsigned int num_crtcs; /**< Number of CRTCs on this device */ |
| 1147 | struct drm_sigdata sigdata; /**< For block_all_signals */ |
| 1148 | sigset_t sigmask; |
| 1149 | |
| 1150 | struct drm_local_map *agp_buffer_map; |
| 1151 | unsigned int agp_buffer_token; |
| 1152 | |
| 1153 | struct drm_mode_config mode_config; /**< Current mode config */ |
| 1154 | |
| 1155 | /** \name GEM information */ |
| 1156 | /*@{ */ |
| 1157 | struct mutex object_name_lock; |
| 1158 | struct idr object_name_idr; |
| 1159 | struct drm_vma_offset_manager *vma_offset_manager; |
| 1160 | /*@} */ |
| 1161 | int switch_power_state; |
| 1162 | }; |
| 1163 | |
| 1164 | #define DRM_SWITCH_POWER_ON 0 |
| 1165 | #define DRM_SWITCH_POWER_OFF 1 |
| 1166 | #define DRM_SWITCH_POWER_CHANGING 2 |
| 1167 | #define DRM_SWITCH_POWER_DYNAMIC_OFF 3 |
| 1168 | |
| 1169 | static __inline__ int drm_core_check_feature(struct drm_device *dev, |
| 1170 | int feature) |
| 1171 | { |
| 1172 | return ((dev->driver->driver_features & feature) ? 1 : 0); |
| 1173 | } |
| 1174 | |
| 1175 | static inline void drm_device_set_unplugged(struct drm_device *dev) |
| 1176 | { |
| 1177 | smp_wmb(); |
| 1178 | atomic_set(&dev->unplugged, 1); |
| 1179 | } |
| 1180 | |
| 1181 | static inline int drm_device_is_unplugged(struct drm_device *dev) |
| 1182 | { |
| 1183 | int ret = atomic_read(&dev->unplugged); |
| 1184 | smp_rmb(); |
| 1185 | return ret; |
| 1186 | } |
| 1187 | |
| 1188 | static inline bool drm_is_render_client(const struct drm_file *file_priv) |
| 1189 | { |
| 1190 | return file_priv->minor->type == DRM_MINOR_RENDER; |
| 1191 | } |
| 1192 | |
| 1193 | static inline bool drm_is_control_client(const struct drm_file *file_priv) |
| 1194 | { |
| 1195 | return file_priv->minor->type == DRM_MINOR_CONTROL; |
| 1196 | } |
| 1197 | |
| 1198 | static inline bool drm_is_primary_client(const struct drm_file *file_priv) |
| 1199 | { |
| 1200 | return file_priv->minor->type == DRM_MINOR_LEGACY; |
| 1201 | } |
| 1202 | |
| 1203 | /******************************************************************/ |
| 1204 | /** \name Internal function definitions */ |
| 1205 | /*@{*/ |
| 1206 | |
| 1207 | /* Driver support (drm_drv.h) */ |
| 1208 | extern long drm_ioctl(struct file *filp, |
| 1209 | unsigned int cmd, unsigned long arg); |
| 1210 | extern long drm_compat_ioctl(struct file *filp, |
| 1211 | unsigned int cmd, unsigned long arg); |
| 1212 | extern int drm_lastclose(struct drm_device *dev); |
| 1213 | extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags); |
| 1214 | |
| 1215 | /* Device support (drm_fops.h) */ |
| 1216 | extern struct mutex drm_global_mutex; |
| 1217 | extern int drm_open(struct inode *inode, struct file *filp); |
| 1218 | extern int drm_stub_open(struct inode *inode, struct file *filp); |
| 1219 | extern ssize_t drm_read(struct file *filp, char __user *buffer, |
| 1220 | size_t count, loff_t *offset); |
| 1221 | extern int drm_release(struct inode *inode, struct file *filp); |
| 1222 | |
| 1223 | /* Mapping support (drm_vm.h) */ |
| 1224 | extern int drm_mmap(struct file *filp, struct vm_area_struct *vma); |
| 1225 | extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma); |
| 1226 | extern void drm_vm_open_locked(struct drm_device *dev, struct vm_area_struct *vma); |
| 1227 | extern void drm_vm_close_locked(struct drm_device *dev, struct vm_area_struct *vma); |
| 1228 | extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait); |
| 1229 | |
| 1230 | /* Memory management support (drm_memory.h) */ |
| 1231 | #include <drm/drm_memory.h> |
| 1232 | |
| 1233 | |
| 1234 | /* Misc. IOCTL support (drm_ioctl.h) */ |
| 1235 | extern int drm_irq_by_busid(struct drm_device *dev, void *data, |
| 1236 | struct drm_file *file_priv); |
| 1237 | extern int drm_getunique(struct drm_device *dev, void *data, |
| 1238 | struct drm_file *file_priv); |
| 1239 | extern int drm_setunique(struct drm_device *dev, void *data, |
| 1240 | struct drm_file *file_priv); |
| 1241 | extern int drm_getmap(struct drm_device *dev, void *data, |
| 1242 | struct drm_file *file_priv); |
| 1243 | extern int drm_getclient(struct drm_device *dev, void *data, |
| 1244 | struct drm_file *file_priv); |
| 1245 | extern int drm_getstats(struct drm_device *dev, void *data, |
| 1246 | struct drm_file *file_priv); |
| 1247 | extern int drm_getcap(struct drm_device *dev, void *data, |
| 1248 | struct drm_file *file_priv); |
| 1249 | extern int drm_setclientcap(struct drm_device *dev, void *data, |
| 1250 | struct drm_file *file_priv); |
| 1251 | extern int drm_setversion(struct drm_device *dev, void *data, |
| 1252 | struct drm_file *file_priv); |
| 1253 | extern int drm_noop(struct drm_device *dev, void *data, |
| 1254 | struct drm_file *file_priv); |
| 1255 | |
| 1256 | /* Context IOCTL support (drm_context.h) */ |
| 1257 | extern int drm_resctx(struct drm_device *dev, void *data, |
| 1258 | struct drm_file *file_priv); |
| 1259 | extern int drm_addctx(struct drm_device *dev, void *data, |
| 1260 | struct drm_file *file_priv); |
| 1261 | extern int drm_getctx(struct drm_device *dev, void *data, |
| 1262 | struct drm_file *file_priv); |
| 1263 | extern int drm_switchctx(struct drm_device *dev, void *data, |
| 1264 | struct drm_file *file_priv); |
| 1265 | extern int drm_newctx(struct drm_device *dev, void *data, |
| 1266 | struct drm_file *file_priv); |
| 1267 | extern int drm_rmctx(struct drm_device *dev, void *data, |
| 1268 | struct drm_file *file_priv); |
| 1269 | |
| 1270 | extern int drm_ctxbitmap_init(struct drm_device *dev); |
| 1271 | extern void drm_ctxbitmap_cleanup(struct drm_device *dev); |
| 1272 | extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle); |
| 1273 | |
| 1274 | extern int drm_setsareactx(struct drm_device *dev, void *data, |
| 1275 | struct drm_file *file_priv); |
| 1276 | extern int drm_getsareactx(struct drm_device *dev, void *data, |
| 1277 | struct drm_file *file_priv); |
| 1278 | |
| 1279 | /* Authentication IOCTL support (drm_auth.h) */ |
| 1280 | extern int drm_getmagic(struct drm_device *dev, void *data, |
| 1281 | struct drm_file *file_priv); |
| 1282 | extern int drm_authmagic(struct drm_device *dev, void *data, |
| 1283 | struct drm_file *file_priv); |
| 1284 | extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic); |
| 1285 | |
| 1286 | /* Cache management (drm_cache.c) */ |
| 1287 | void drm_clflush_pages(struct page *pages[], unsigned long num_pages); |
| 1288 | void drm_clflush_sg(struct sg_table *st); |
| 1289 | void drm_clflush_virt_range(void *addr, unsigned long length); |
| 1290 | |
| 1291 | /* Locking IOCTL support (drm_lock.h) */ |
| 1292 | extern int drm_lock(struct drm_device *dev, void *data, |
| 1293 | struct drm_file *file_priv); |
| 1294 | extern int drm_unlock(struct drm_device *dev, void *data, |
| 1295 | struct drm_file *file_priv); |
| 1296 | extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context); |
| 1297 | extern void drm_idlelock_take(struct drm_lock_data *lock_data); |
| 1298 | extern void drm_idlelock_release(struct drm_lock_data *lock_data); |
| 1299 | |
| 1300 | /* |
| 1301 | * These are exported to drivers so that they can implement fencing using |
| 1302 | * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. |
| 1303 | */ |
| 1304 | |
| 1305 | extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv); |
| 1306 | |
| 1307 | /* Buffer management support (drm_bufs.h) */ |
| 1308 | extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request); |
| 1309 | extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request); |
| 1310 | extern int drm_addmap(struct drm_device *dev, resource_size_t offset, |
| 1311 | unsigned int size, enum drm_map_type type, |
| 1312 | enum drm_map_flags flags, struct drm_local_map **map_ptr); |
| 1313 | extern int drm_addmap_ioctl(struct drm_device *dev, void *data, |
| 1314 | struct drm_file *file_priv); |
| 1315 | extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map); |
| 1316 | extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map); |
| 1317 | extern int drm_rmmap_ioctl(struct drm_device *dev, void *data, |
| 1318 | struct drm_file *file_priv); |
| 1319 | extern int drm_addbufs(struct drm_device *dev, void *data, |
| 1320 | struct drm_file *file_priv); |
| 1321 | extern int drm_infobufs(struct drm_device *dev, void *data, |
| 1322 | struct drm_file *file_priv); |
| 1323 | extern int drm_markbufs(struct drm_device *dev, void *data, |
| 1324 | struct drm_file *file_priv); |
| 1325 | extern int drm_freebufs(struct drm_device *dev, void *data, |
| 1326 | struct drm_file *file_priv); |
| 1327 | extern int drm_mapbufs(struct drm_device *dev, void *data, |
| 1328 | struct drm_file *file_priv); |
| 1329 | extern int drm_dma_ioctl(struct drm_device *dev, void *data, |
| 1330 | struct drm_file *file_priv); |
| 1331 | |
| 1332 | /* DMA support (drm_dma.h) */ |
| 1333 | extern int drm_legacy_dma_setup(struct drm_device *dev); |
| 1334 | extern void drm_legacy_dma_takedown(struct drm_device *dev); |
| 1335 | extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf); |
| 1336 | extern void drm_core_reclaim_buffers(struct drm_device *dev, |
| 1337 | struct drm_file *filp); |
| 1338 | |
| 1339 | /* IRQ support (drm_irq.h) */ |
| 1340 | extern int drm_control(struct drm_device *dev, void *data, |
| 1341 | struct drm_file *file_priv); |
| 1342 | extern int drm_irq_install(struct drm_device *dev, int irq); |
| 1343 | extern int drm_irq_uninstall(struct drm_device *dev); |
| 1344 | |
| 1345 | extern int drm_vblank_init(struct drm_device *dev, int num_crtcs); |
| 1346 | extern int drm_wait_vblank(struct drm_device *dev, void *data, |
| 1347 | struct drm_file *filp); |
| 1348 | extern u32 drm_vblank_count(struct drm_device *dev, int crtc); |
| 1349 | extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc, |
| 1350 | struct timeval *vblanktime); |
| 1351 | extern void drm_send_vblank_event(struct drm_device *dev, int crtc, |
| 1352 | struct drm_pending_vblank_event *e); |
| 1353 | extern bool drm_handle_vblank(struct drm_device *dev, int crtc); |
| 1354 | extern int drm_vblank_get(struct drm_device *dev, int crtc); |
| 1355 | extern void drm_vblank_put(struct drm_device *dev, int crtc); |
| 1356 | extern int drm_crtc_vblank_get(struct drm_crtc *crtc); |
| 1357 | extern void drm_crtc_vblank_put(struct drm_crtc *crtc); |
| 1358 | extern void drm_vblank_off(struct drm_device *dev, int crtc); |
| 1359 | extern void drm_vblank_on(struct drm_device *dev, int crtc); |
| 1360 | extern void drm_crtc_vblank_off(struct drm_crtc *crtc); |
| 1361 | extern void drm_crtc_vblank_on(struct drm_crtc *crtc); |
| 1362 | extern void drm_vblank_cleanup(struct drm_device *dev); |
| 1363 | |
| 1364 | extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc, |
| 1365 | struct timeval *tvblank, unsigned flags); |
| 1366 | extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, |
| 1367 | int crtc, int *max_error, |
| 1368 | struct timeval *vblank_time, |
| 1369 | unsigned flags, |
| 1370 | const struct drm_crtc *refcrtc, |
| 1371 | const struct drm_display_mode *mode); |
| 1372 | extern void drm_calc_timestamping_constants(struct drm_crtc *crtc, |
| 1373 | const struct drm_display_mode *mode); |
| 1374 | |
| 1375 | |
| 1376 | /* Modesetting support */ |
| 1377 | extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc); |
| 1378 | extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc); |
| 1379 | extern int drm_modeset_ctl(struct drm_device *dev, void *data, |
| 1380 | struct drm_file *file_priv); |
| 1381 | |
| 1382 | /* AGP/GART support (drm_agpsupport.h) */ |
| 1383 | |
| 1384 | #include <drm/drm_agpsupport.h> |
| 1385 | |
| 1386 | /* Stub support (drm_stub.h) */ |
| 1387 | extern int drm_setmaster_ioctl(struct drm_device *dev, void *data, |
| 1388 | struct drm_file *file_priv); |
| 1389 | extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data, |
| 1390 | struct drm_file *file_priv); |
| 1391 | struct drm_master *drm_master_create(struct drm_minor *minor); |
| 1392 | extern struct drm_master *drm_master_get(struct drm_master *master); |
| 1393 | extern void drm_master_put(struct drm_master **master); |
| 1394 | |
| 1395 | extern void drm_put_dev(struct drm_device *dev); |
| 1396 | extern void drm_unplug_dev(struct drm_device *dev); |
| 1397 | extern unsigned int drm_debug; |
| 1398 | |
| 1399 | extern unsigned int drm_vblank_offdelay; |
| 1400 | extern unsigned int drm_timestamp_precision; |
| 1401 | extern unsigned int drm_timestamp_monotonic; |
| 1402 | |
| 1403 | extern struct class *drm_class; |
| 1404 | extern struct dentry *drm_debugfs_root; |
| 1405 | |
| 1406 | extern struct idr drm_minors_idr; |
| 1407 | |
| 1408 | extern struct drm_local_map *drm_getsarea(struct drm_device *dev); |
| 1409 | |
| 1410 | /* Debugfs support */ |
| 1411 | #if defined(CONFIG_DEBUG_FS) |
| 1412 | extern int drm_debugfs_init(struct drm_minor *minor, int minor_id, |
| 1413 | struct dentry *root); |
| 1414 | extern int drm_debugfs_create_files(const struct drm_info_list *files, |
| 1415 | int count, struct dentry *root, |
| 1416 | struct drm_minor *minor); |
| 1417 | extern int drm_debugfs_remove_files(const struct drm_info_list *files, |
| 1418 | int count, struct drm_minor *minor); |
| 1419 | extern int drm_debugfs_cleanup(struct drm_minor *minor); |
| 1420 | extern int drm_debugfs_connector_add(struct drm_connector *connector); |
| 1421 | extern void drm_debugfs_connector_remove(struct drm_connector *connector); |
| 1422 | #else |
| 1423 | static inline int drm_debugfs_init(struct drm_minor *minor, int minor_id, |
| 1424 | struct dentry *root) |
| 1425 | { |
| 1426 | return 0; |
| 1427 | } |
| 1428 | |
| 1429 | static inline int drm_debugfs_create_files(const struct drm_info_list *files, |
| 1430 | int count, struct dentry *root, |
| 1431 | struct drm_minor *minor) |
| 1432 | { |
| 1433 | return 0; |
| 1434 | } |
| 1435 | |
| 1436 | static inline int drm_debugfs_remove_files(const struct drm_info_list *files, |
| 1437 | int count, struct drm_minor *minor) |
| 1438 | { |
| 1439 | return 0; |
| 1440 | } |
| 1441 | |
| 1442 | static inline int drm_debugfs_cleanup(struct drm_minor *minor) |
| 1443 | { |
| 1444 | return 0; |
| 1445 | } |
| 1446 | |
| 1447 | static inline int drm_debugfs_connector_add(struct drm_connector *connector) |
| 1448 | { |
| 1449 | return 0; |
| 1450 | } |
| 1451 | static inline void drm_debugfs_connector_remove(struct drm_connector *connector) |
| 1452 | { |
| 1453 | } |
| 1454 | |
| 1455 | #endif |
| 1456 | |
| 1457 | /* Info file support */ |
| 1458 | extern int drm_name_info(struct seq_file *m, void *data); |
| 1459 | extern int drm_vm_info(struct seq_file *m, void *data); |
| 1460 | extern int drm_bufs_info(struct seq_file *m, void *data); |
| 1461 | extern int drm_vblank_info(struct seq_file *m, void *data); |
| 1462 | extern int drm_clients_info(struct seq_file *m, void* data); |
| 1463 | extern int drm_gem_name_info(struct seq_file *m, void *data); |
| 1464 | |
| 1465 | |
| 1466 | extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev, |
| 1467 | struct drm_gem_object *obj, int flags); |
| 1468 | extern int drm_gem_prime_handle_to_fd(struct drm_device *dev, |
| 1469 | struct drm_file *file_priv, uint32_t handle, uint32_t flags, |
| 1470 | int *prime_fd); |
| 1471 | extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev, |
| 1472 | struct dma_buf *dma_buf); |
| 1473 | extern int drm_gem_prime_fd_to_handle(struct drm_device *dev, |
| 1474 | struct drm_file *file_priv, int prime_fd, uint32_t *handle); |
| 1475 | extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf); |
| 1476 | |
| 1477 | extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data, |
| 1478 | struct drm_file *file_priv); |
| 1479 | extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data, |
| 1480 | struct drm_file *file_priv); |
| 1481 | |
| 1482 | extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages, |
| 1483 | dma_addr_t *addrs, int max_pages); |
| 1484 | extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages); |
| 1485 | extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg); |
| 1486 | |
| 1487 | int drm_gem_dumb_destroy(struct drm_file *file, |
| 1488 | struct drm_device *dev, |
| 1489 | uint32_t handle); |
| 1490 | |
| 1491 | void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv); |
| 1492 | void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv); |
| 1493 | void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf); |
| 1494 | |
| 1495 | #if DRM_DEBUG_CODE |
| 1496 | extern int drm_vma_info(struct seq_file *m, void *data); |
| 1497 | #endif |
| 1498 | |
| 1499 | /* Scatter Gather Support (drm_scatter.h) */ |
| 1500 | extern void drm_legacy_sg_cleanup(struct drm_device *dev); |
| 1501 | extern int drm_sg_alloc(struct drm_device *dev, void *data, |
| 1502 | struct drm_file *file_priv); |
| 1503 | extern int drm_sg_free(struct drm_device *dev, void *data, |
| 1504 | struct drm_file *file_priv); |
| 1505 | |
| 1506 | /* ATI PCIGART support (ati_pcigart.h) */ |
| 1507 | extern int drm_ati_pcigart_init(struct drm_device *dev, |
| 1508 | struct drm_ati_pcigart_info * gart_info); |
| 1509 | extern int drm_ati_pcigart_cleanup(struct drm_device *dev, |
| 1510 | struct drm_ati_pcigart_info * gart_info); |
| 1511 | |
| 1512 | extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size, |
| 1513 | size_t align); |
| 1514 | extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah); |
| 1515 | extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah); |
| 1516 | extern int drm_pci_set_unique(struct drm_device *dev, |
| 1517 | struct drm_master *master, |
| 1518 | struct drm_unique *u); |
| 1519 | |
| 1520 | /* sysfs support (drm_sysfs.c) */ |
| 1521 | struct drm_sysfs_class; |
| 1522 | extern struct class *drm_sysfs_create(struct module *owner, char *name); |
| 1523 | extern void drm_sysfs_destroy(void); |
| 1524 | extern int drm_sysfs_device_add(struct drm_minor *minor); |
| 1525 | extern void drm_sysfs_hotplug_event(struct drm_device *dev); |
| 1526 | extern void drm_sysfs_device_remove(struct drm_minor *minor); |
| 1527 | extern int drm_sysfs_connector_add(struct drm_connector *connector); |
| 1528 | extern void drm_sysfs_connector_remove(struct drm_connector *connector); |
| 1529 | |
| 1530 | /* Graphics Execution Manager library functions (drm_gem.c) */ |
| 1531 | int drm_gem_init(struct drm_device *dev); |
| 1532 | void drm_gem_destroy(struct drm_device *dev); |
| 1533 | void drm_gem_object_release(struct drm_gem_object *obj); |
| 1534 | void drm_gem_object_free(struct kref *kref); |
| 1535 | int drm_gem_object_init(struct drm_device *dev, |
| 1536 | struct drm_gem_object *obj, size_t size); |
| 1537 | void drm_gem_private_object_init(struct drm_device *dev, |
| 1538 | struct drm_gem_object *obj, size_t size); |
| 1539 | void drm_gem_vm_open(struct vm_area_struct *vma); |
| 1540 | void drm_gem_vm_close(struct vm_area_struct *vma); |
| 1541 | int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size, |
| 1542 | struct vm_area_struct *vma); |
| 1543 | int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); |
| 1544 | |
| 1545 | #include <drm/drm_global.h> |
| 1546 | |
| 1547 | static inline void |
| 1548 | drm_gem_object_reference(struct drm_gem_object *obj) |
| 1549 | { |
| 1550 | kref_get(&obj->refcount); |
| 1551 | } |
| 1552 | |
| 1553 | static inline void |
| 1554 | drm_gem_object_unreference(struct drm_gem_object *obj) |
| 1555 | { |
| 1556 | if (obj != NULL) |
| 1557 | kref_put(&obj->refcount, drm_gem_object_free); |
| 1558 | } |
| 1559 | |
| 1560 | static inline void |
| 1561 | drm_gem_object_unreference_unlocked(struct drm_gem_object *obj) |
| 1562 | { |
| 1563 | if (obj && !atomic_add_unless(&obj->refcount.refcount, -1, 1)) { |
| 1564 | struct drm_device *dev = obj->dev; |
| 1565 | |
| 1566 | mutex_lock(&dev->struct_mutex); |
| 1567 | if (likely(atomic_dec_and_test(&obj->refcount.refcount))) |
| 1568 | drm_gem_object_free(&obj->refcount); |
| 1569 | mutex_unlock(&dev->struct_mutex); |
| 1570 | } |
| 1571 | } |
| 1572 | |
| 1573 | int drm_gem_handle_create_tail(struct drm_file *file_priv, |
| 1574 | struct drm_gem_object *obj, |
| 1575 | u32 *handlep); |
| 1576 | int drm_gem_handle_create(struct drm_file *file_priv, |
| 1577 | struct drm_gem_object *obj, |
| 1578 | u32 *handlep); |
| 1579 | int drm_gem_handle_delete(struct drm_file *filp, u32 handle); |
| 1580 | |
| 1581 | |
| 1582 | void drm_gem_free_mmap_offset(struct drm_gem_object *obj); |
| 1583 | int drm_gem_create_mmap_offset(struct drm_gem_object *obj); |
| 1584 | int drm_gem_create_mmap_offset_size(struct drm_gem_object *obj, size_t size); |
| 1585 | |
| 1586 | struct page **drm_gem_get_pages(struct drm_gem_object *obj); |
| 1587 | void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages, |
| 1588 | bool dirty, bool accessed); |
| 1589 | |
| 1590 | struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev, |
| 1591 | struct drm_file *filp, |
| 1592 | u32 handle); |
| 1593 | int drm_gem_close_ioctl(struct drm_device *dev, void *data, |
| 1594 | struct drm_file *file_priv); |
| 1595 | int drm_gem_flink_ioctl(struct drm_device *dev, void *data, |
| 1596 | struct drm_file *file_priv); |
| 1597 | int drm_gem_open_ioctl(struct drm_device *dev, void *data, |
| 1598 | struct drm_file *file_priv); |
| 1599 | void drm_gem_open(struct drm_device *dev, struct drm_file *file_private); |
| 1600 | void drm_gem_release(struct drm_device *dev, struct drm_file *file_private); |
| 1601 | |
| 1602 | extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev); |
| 1603 | extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev); |
| 1604 | extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev); |
| 1605 | |
| 1606 | static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev, |
| 1607 | unsigned int token) |
| 1608 | { |
| 1609 | struct drm_map_list *_entry; |
| 1610 | list_for_each_entry(_entry, &dev->maplist, head) |
| 1611 | if (_entry->user_token == token) |
| 1612 | return _entry->map; |
| 1613 | return NULL; |
| 1614 | } |
| 1615 | |
| 1616 | static __inline__ void drm_core_dropmap(struct drm_local_map *map) |
| 1617 | { |
| 1618 | } |
| 1619 | |
| 1620 | #include <drm/drm_mem_util.h> |
| 1621 | |
| 1622 | struct drm_device *drm_dev_alloc(struct drm_driver *driver, |
| 1623 | struct device *parent); |
| 1624 | void drm_dev_ref(struct drm_device *dev); |
| 1625 | void drm_dev_unref(struct drm_device *dev); |
| 1626 | int drm_dev_register(struct drm_device *dev, unsigned long flags); |
| 1627 | void drm_dev_unregister(struct drm_device *dev); |
| 1628 | int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...); |
| 1629 | |
| 1630 | struct drm_minor *drm_minor_acquire(unsigned int minor_id); |
| 1631 | void drm_minor_release(struct drm_minor *minor); |
| 1632 | |
| 1633 | /*@}*/ |
| 1634 | |
| 1635 | /* PCI section */ |
| 1636 | static __inline__ int drm_pci_device_is_agp(struct drm_device *dev) |
| 1637 | { |
| 1638 | if (dev->driver->device_is_agp != NULL) { |
| 1639 | int err = (*dev->driver->device_is_agp) (dev); |
| 1640 | |
| 1641 | if (err != 2) { |
| 1642 | return err; |
| 1643 | } |
| 1644 | } |
| 1645 | |
| 1646 | return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP); |
| 1647 | } |
| 1648 | void drm_pci_agp_destroy(struct drm_device *dev); |
| 1649 | |
| 1650 | extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver); |
| 1651 | extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver); |
| 1652 | extern int drm_get_pci_dev(struct pci_dev *pdev, |
| 1653 | const struct pci_device_id *ent, |
| 1654 | struct drm_driver *driver); |
| 1655 | |
| 1656 | #define DRM_PCIE_SPEED_25 1 |
| 1657 | #define DRM_PCIE_SPEED_50 2 |
| 1658 | #define DRM_PCIE_SPEED_80 4 |
| 1659 | |
| 1660 | extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask); |
| 1661 | |
| 1662 | /* platform section */ |
| 1663 | extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device); |
| 1664 | |
| 1665 | /* returns true if currently okay to sleep */ |
| 1666 | static __inline__ bool drm_can_sleep(void) |
| 1667 | { |
| 1668 | if (in_atomic() || in_dbg_master() || irqs_disabled()) |
| 1669 | return false; |
| 1670 | return true; |
| 1671 | } |
| 1672 | |
| 1673 | #endif /* __KERNEL__ */ |
| 1674 | #endif |