3 * Private header for Direct Rendering Manager
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
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.
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:
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
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.
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>
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>
56 #include <linux/cdev.h>
57 #include <linux/mutex.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 */
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>
72 #include <drm/drm_sarea.h>
73 #include <drm/drm_vma_manager.h>
75 #include <linux/idr.h>
77 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
86 struct reservation_object;
88 #include <drm/drm_os_linux.h>
89 #include <drm/drm_hashtab.h>
90 #include <drm/drm_mm.h>
93 * 4 debug categories are defined:
95 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...
96 * This is the category used by the DRM_DEBUG() macro.
98 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...
99 * This is the category used by the DRM_DEBUG_DRIVER() macro.
101 * KMS: used in the modesetting code.
102 * This is the category used by the DRM_DEBUG_KMS() macro.
104 * PRIME: used in the prime code.
105 * This is the category used by the DRM_DEBUG_PRIME() macro.
107 * Enabling verbose debug messages is done through the drm.debug parameter,
108 * each category being enabled by a bit.
110 * drm.debug=0x1 will enable CORE messages
111 * drm.debug=0x2 will enable DRIVER messages
112 * drm.debug=0x3 will enable CORE and DRIVER messages
114 * drm.debug=0xf will enable all messages
116 * An interesting feature is that it's possible to enable verbose logging at
117 * run-time by echoing the debug value in its sysfs node:
118 * # echo 0xf > /sys/module/drm/parameters/debug
120 #define DRM_UT_CORE 0x01
121 #define DRM_UT_DRIVER 0x02
122 #define DRM_UT_KMS 0x04
123 #define DRM_UT_PRIME 0x08
125 extern __printf(2, 3)
126 void drm_ut_debug_printk(const char *function_name,
127 const char *format, ...);
128 extern __printf(2, 3)
129 int drm_err(const char *func, const char *format, ...);
131 /***********************************************************************/
132 /** \name DRM template customization defaults */
135 /* driver capabilities and requirements mask */
136 #define DRIVER_USE_AGP 0x1
137 #define DRIVER_PCI_DMA 0x8
138 #define DRIVER_SG 0x10
139 #define DRIVER_HAVE_DMA 0x20
140 #define DRIVER_HAVE_IRQ 0x40
141 #define DRIVER_IRQ_SHARED 0x80
142 #define DRIVER_GEM 0x1000
143 #define DRIVER_MODESET 0x2000
144 #define DRIVER_PRIME 0x4000
145 #define DRIVER_RENDER 0x8000
147 /***********************************************************************/
148 /** \name Begin the DRM... */
151 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
152 also include looping detection. */
154 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
158 /***********************************************************************/
159 /** \name Macros to make printk easier */
165 * \param fmt printf() like format string.
166 * \param arg arguments
168 #define DRM_ERROR(fmt, ...) \
169 drm_err(__func__, fmt, ##__VA_ARGS__)
172 * Rate limited error output. Like DRM_ERROR() but won't flood the log.
174 * \param fmt printf() like format string.
175 * \param arg arguments
177 #define DRM_ERROR_RATELIMITED(fmt, ...) \
179 static DEFINE_RATELIMIT_STATE(_rs, \
180 DEFAULT_RATELIMIT_INTERVAL, \
181 DEFAULT_RATELIMIT_BURST); \
183 if (__ratelimit(&_rs)) \
184 drm_err(__func__, fmt, ##__VA_ARGS__); \
187 #define DRM_INFO(fmt, ...) \
188 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
190 #define DRM_INFO_ONCE(fmt, ...) \
191 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
196 * \param fmt printf() like format string.
197 * \param arg arguments
200 #define DRM_DEBUG(fmt, args...) \
202 if (unlikely(drm_debug & DRM_UT_CORE)) \
203 drm_ut_debug_printk(__func__, fmt, ##args); \
206 #define DRM_DEBUG_DRIVER(fmt, args...) \
208 if (unlikely(drm_debug & DRM_UT_DRIVER)) \
209 drm_ut_debug_printk(__func__, fmt, ##args); \
211 #define DRM_DEBUG_KMS(fmt, args...) \
213 if (unlikely(drm_debug & DRM_UT_KMS)) \
214 drm_ut_debug_printk(__func__, fmt, ##args); \
216 #define DRM_DEBUG_PRIME(fmt, args...) \
218 if (unlikely(drm_debug & DRM_UT_PRIME)) \
219 drm_ut_debug_printk(__func__, fmt, ##args); \
222 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
223 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
224 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
225 #define DRM_DEBUG(fmt, arg...) do { } while (0)
230 /***********************************************************************/
231 /** \name Internal types and structures */
234 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
237 * Test that the hardware lock is held by the caller, returning otherwise.
239 * \param dev DRM device.
240 * \param filp file pointer of the caller.
242 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
244 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
245 _file_priv->master->lock.file_priv != _file_priv) { \
246 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
247 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
248 _file_priv->master->lock.file_priv, _file_priv); \
254 * Ioctl function type.
256 * \param inode device inode.
257 * \param file_priv DRM file private pointer.
258 * \param cmd command.
259 * \param arg argument.
261 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
262 struct drm_file *file_priv);
264 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
267 #define DRM_IOCTL_NR(n) _IOC_NR(n)
268 #define DRM_MAJOR 226
271 #define DRM_MASTER 0x2
272 #define DRM_ROOT_ONLY 0x4
273 #define DRM_CONTROL_ALLOW 0x8
274 #define DRM_UNLOCKED 0x10
275 #define DRM_RENDER_ALLOW 0x20
277 struct drm_ioctl_desc {
281 unsigned int cmd_drv;
286 * Creates a driver or general drm_ioctl_desc array entry for the given
287 * ioctl, for use by drm_ioctl().
290 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
291 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
293 struct drm_magic_entry {
294 struct list_head head;
295 struct drm_hash_item hash_item;
296 struct drm_file *priv;
299 struct drm_vma_entry {
300 struct list_head head;
301 struct vm_area_struct *vma;
309 int idx; /**< Index into master buflist */
310 int total; /**< Buffer size */
311 int order; /**< log-base-2(total) */
312 int used; /**< Amount of buffer in use (for DMA) */
313 unsigned long offset; /**< Byte offset (used internally) */
314 void *address; /**< Address of buffer */
315 unsigned long bus_address; /**< Bus address of buffer */
316 struct drm_buf *next; /**< Kernel-only: used for free list */
317 __volatile__ int waiting; /**< On kernel DMA queue */
318 __volatile__ int pending; /**< On hardware DMA queue */
319 struct drm_file *file_priv; /**< Private of holding file descr */
320 int context; /**< Kernel queue for this buffer */
321 int while_locked; /**< Dispatch this buffer while locked */
329 } list; /**< Which list we're on */
331 int dev_priv_size; /**< Size of buffer private storage */
332 void *dev_private; /**< Per-buffer private storage */
335 /** bufs is one longer than it has to be */
336 struct drm_waitlist {
337 int count; /**< Number of possible buffers */
338 struct drm_buf **bufs; /**< List of pointers to buffers */
339 struct drm_buf **rp; /**< Read pointer */
340 struct drm_buf **wp; /**< Write pointer */
341 struct drm_buf **end; /**< End pointer */
342 spinlock_t read_lock;
343 spinlock_t write_lock;
346 typedef struct drm_dma_handle {
353 * Buffer entry. There is one of this for each buffer size order.
355 struct drm_buf_entry {
356 int buf_size; /**< size */
357 int buf_count; /**< number of buffers */
358 struct drm_buf *buflist; /**< buffer list */
361 struct drm_dma_handle **seglist;
363 int low_mark; /**< Low water mark */
364 int high_mark; /**< High water mark */
367 /* Event queued up for userspace to read */
368 struct drm_pending_event {
369 struct drm_event *event;
370 struct list_head link;
371 struct drm_file *file_priv;
372 pid_t pid; /* pid of requester, no guarantee it's valid by the time
373 we deliver the event, for tracing only */
374 void (*destroy)(struct drm_pending_event *event);
377 /* initial implementaton using a linked list - todo hashtab */
378 struct drm_prime_file_private {
379 struct list_head head;
383 /** File private data */
385 unsigned authenticated :1;
386 /* Whether we're master for a minor. Protected by master_mutex */
387 unsigned is_master :1;
388 /* true when the client has asked us to expose stereo 3D mode flags */
389 unsigned stereo_allowed :1;
391 * true if client understands CRTC primary planes and cursor planes
394 unsigned universal_planes:1;
399 struct list_head lhead;
400 struct drm_minor *minor;
401 unsigned long lock_count;
403 /** Mapping of mm object handles to object pointers. */
404 struct idr object_idr;
405 /** Lock for synchronization of access to object_idr. */
406 spinlock_t table_lock;
411 struct drm_master *master; /* master this node is currently associated with
412 N.B. not always minor->master */
414 * fbs - List of framebuffers associated with this file.
416 * Protected by fbs_lock. Note that the fbs list holds a reference on
417 * the fb object to prevent it from untimely disappearing.
419 struct list_head fbs;
420 struct mutex fbs_lock;
422 wait_queue_head_t event_wait;
423 struct list_head event_list;
426 struct drm_prime_file_private prime;
432 struct drm_lock_data {
433 struct drm_hw_lock *hw_lock; /**< Hardware lock */
434 /** Private of lock holder's file (NULL=kernel) */
435 struct drm_file *file_priv;
436 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
437 unsigned long lock_time; /**< Time of last lock in jiffies */
439 uint32_t kernel_waiters;
440 uint32_t user_waiters;
447 struct drm_device_dma {
449 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
450 int buf_count; /**< total number of buffers */
451 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
453 int page_count; /**< number of pages */
454 unsigned long *pagelist; /**< page list */
455 unsigned long byte_count;
457 _DRM_DMA_USE_AGP = 0x01,
458 _DRM_DMA_USE_SG = 0x02,
459 _DRM_DMA_USE_FB = 0x04,
460 _DRM_DMA_USE_PCI_RO = 0x08
466 * AGP memory entry. Stored as a doubly linked list.
469 unsigned long handle; /**< handle */
470 struct agp_memory *memory;
471 unsigned long bound; /**< address */
473 struct list_head head;
479 * \sa drm_agp_init() and drm_device::agp.
481 struct drm_agp_head {
482 struct agp_kern_info agp_info; /**< AGP device information */
483 struct list_head memory;
484 unsigned long mode; /**< AGP mode */
485 struct agp_bridge_data *bridge;
486 int enabled; /**< whether the AGP bus as been enabled */
487 int acquired; /**< whether the AGP device has been acquired */
490 int cant_use_aperture;
491 unsigned long page_mask;
495 * Scatter-gather memory.
498 unsigned long handle;
501 struct page **pagelist;
507 struct drm_hw_lock *lock;
512 * Kernel side of a mapping
514 struct drm_local_map {
515 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
516 unsigned long size; /**< Requested physical size (bytes) */
517 enum drm_map_type type; /**< Type of memory to map */
518 enum drm_map_flags flags; /**< Flags */
519 void *handle; /**< User-space: "Handle" to pass to mmap() */
520 /**< Kernel-space: kernel-virtual address */
521 int mtrr; /**< MTRR slot used */
524 typedef struct drm_local_map drm_local_map_t;
529 struct drm_map_list {
530 struct list_head head; /**< list head */
531 struct drm_hash_item hash;
532 struct drm_local_map *map; /**< mapping */
534 struct drm_master *master;
537 /* location of GART table */
538 #define DRM_ATI_GART_MAIN 1
539 #define DRM_ATI_GART_FB 2
541 #define DRM_ATI_GART_PCI 1
542 #define DRM_ATI_GART_PCIE 2
543 #define DRM_ATI_GART_IGP 3
545 struct drm_ati_pcigart_info {
546 int gart_table_location;
550 dma_addr_t table_mask;
551 struct drm_dma_handle *table_handle;
552 struct drm_local_map mapping;
557 * This structure defines the drm_mm memory object, which will be used by the
558 * DRM for its buffer objects.
560 struct drm_gem_object {
561 /** Reference count of this object */
562 struct kref refcount;
565 * handle_count - gem file_priv handle count of this object
567 * Each handle also holds a reference. Note that when the handle_count
568 * drops to 0 any global names (e.g. the id in the flink namespace) will
571 * Protected by dev->object_name_lock.
573 unsigned handle_count;
575 /** Related drm device */
576 struct drm_device *dev;
578 /** File representing the shmem storage */
581 /* Mapping info for this object */
582 struct drm_vma_offset_node vma_node;
585 * Size of the object, in bytes. Immutable over the object's
591 * Global name for this object, starts at 1. 0 means unnamed.
592 * Access is covered by the object_name_lock in the related drm_device
597 * Memory domains. These monitor which caches contain read/write data
598 * related to the object. When transitioning from one set of domains
599 * to another, the driver is called to ensure that caches are suitably
600 * flushed and invalidated
602 uint32_t read_domains;
603 uint32_t write_domain;
606 * While validating an exec operation, the
607 * new read/write domain values are computed here.
608 * They will be transferred to the above values
609 * at the point that any cache flushing occurs
611 uint32_t pending_read_domains;
612 uint32_t pending_write_domain;
615 * dma_buf - dma buf associated with this GEM object
617 * Pointer to the dma-buf associated with this gem object (either
618 * through importing or exporting). We break the resulting reference
619 * loop when the last gem handle for this object is released.
621 * Protected by obj->object_name_lock
623 struct dma_buf *dma_buf;
626 * import_attach - dma buf attachment backing this object
628 * Any foreign dma_buf imported as a gem object has this set to the
629 * attachment point for the device. This is invariant over the lifetime
632 * The driver's ->gem_free_object callback is responsible for cleaning
633 * up the dma_buf attachment and references acquired at import time.
635 * Note that the drm gem/prime core does not depend upon drivers setting
636 * this field any more. So for drivers where this doesn't make sense
637 * (e.g. virtual devices or a displaylink behind an usb bus) they can
638 * simply leave it as NULL.
640 struct dma_buf_attachment *import_attach;
643 #include <drm/drm_crtc.h>
646 * struct drm_master - drm master structure
648 * @refcount: Refcount for this master object.
649 * @minor: Link back to minor char device we are master for. Immutable.
650 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
651 * @unique_len: Length of unique field. Protected by drm_global_mutex.
652 * @unique_size: Amount allocated. Protected by drm_global_mutex.
653 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex.
654 * @magicfree: List of used authentication tokens. Protected by struct_mutex.
655 * @lock: DRI lock information.
656 * @driver_priv: Pointer to driver-private information.
659 struct kref refcount;
660 struct drm_minor *minor;
664 struct drm_open_hash magiclist;
665 struct list_head magicfree;
666 struct drm_lock_data lock;
670 /* Size of ringbuffer for vblank timestamps. Just double-buffer
671 * in initial implementation.
673 #define DRM_VBLANKTIME_RBSIZE 2
675 /* Flags and return codes for get_vblank_timestamp() driver function. */
676 #define DRM_CALLED_FROM_VBLIRQ 1
677 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
678 #define DRM_VBLANKTIME_INVBL (1 << 1)
680 /* get_scanout_position() return flags */
681 #define DRM_SCANOUTPOS_VALID (1 << 0)
682 #define DRM_SCANOUTPOS_INVBL (1 << 1)
683 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
686 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
690 * DRM driver structure. This structure represent the common code for
691 * a family of cards. There will one drm_device for each card present
695 int (*load) (struct drm_device *, unsigned long flags);
696 int (*firstopen) (struct drm_device *);
697 int (*open) (struct drm_device *, struct drm_file *);
698 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
699 void (*postclose) (struct drm_device *, struct drm_file *);
700 void (*lastclose) (struct drm_device *);
701 int (*unload) (struct drm_device *);
702 int (*suspend) (struct drm_device *, pm_message_t state);
703 int (*resume) (struct drm_device *);
704 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
705 int (*dma_quiescent) (struct drm_device *);
706 int (*context_dtor) (struct drm_device *dev, int context);
709 * get_vblank_counter - get raw hardware vblank counter
711 * @crtc: counter to fetch
713 * Driver callback for fetching a raw hardware vblank counter for @crtc.
714 * If a device doesn't have a hardware counter, the driver can simply
715 * return the value of drm_vblank_count. The DRM core will account for
716 * missed vblank events while interrupts where disabled based on system
719 * Wraparound handling and loss of events due to modesetting is dealt
720 * with in the DRM core code.
723 * Raw vblank counter value.
725 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
728 * enable_vblank - enable vblank interrupt events
730 * @crtc: which irq to enable
732 * Enable vblank interrupts for @crtc. If the device doesn't have
733 * a hardware vblank counter, this routine should be a no-op, since
734 * interrupts will have to stay on to keep the count accurate.
737 * Zero on success, appropriate errno if the given @crtc's vblank
738 * interrupt cannot be enabled.
740 int (*enable_vblank) (struct drm_device *dev, int crtc);
743 * disable_vblank - disable vblank interrupt events
745 * @crtc: which irq to enable
747 * Disable vblank interrupts for @crtc. If the device doesn't have
748 * a hardware vblank counter, this routine should be a no-op, since
749 * interrupts will have to stay on to keep the count accurate.
751 void (*disable_vblank) (struct drm_device *dev, int crtc);
754 * Called by \c drm_device_is_agp. Typically used to determine if a
755 * card is really attached to AGP or not.
757 * \param dev DRM device handle
760 * One of three values is returned depending on whether or not the
761 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
762 * (return of 1), or may or may not be AGP (return of 2).
764 int (*device_is_agp) (struct drm_device *dev);
767 * Called by vblank timestamping code.
769 * Return the current display scanout position from a crtc, and an
770 * optional accurate ktime_get timestamp of when position was measured.
772 * \param dev DRM device.
773 * \param crtc Id of the crtc to query.
774 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
775 * \param *vpos Target location for current vertical scanout position.
776 * \param *hpos Target location for current horizontal scanout position.
777 * \param *stime Target location for timestamp taken immediately before
778 * scanout position query. Can be NULL to skip timestamp.
779 * \param *etime Target location for timestamp taken immediately after
780 * scanout position query. Can be NULL to skip timestamp.
782 * Returns vpos as a positive number while in active scanout area.
783 * Returns vpos as a negative number inside vblank, counting the number
784 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
785 * until start of active scanout / end of vblank."
787 * \return Flags, or'ed together as follows:
789 * DRM_SCANOUTPOS_VALID = Query successful.
790 * DRM_SCANOUTPOS_INVBL = Inside vblank.
791 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
792 * this flag means that returned position may be offset by a constant
793 * but unknown small number of scanlines wrt. real scanout position.
796 int (*get_scanout_position) (struct drm_device *dev, int crtc,
798 int *vpos, int *hpos, ktime_t *stime,
802 * Called by \c drm_get_last_vbltimestamp. Should return a precise
803 * timestamp when the most recent VBLANK interval ended or will end.
805 * Specifically, the timestamp in @vblank_time should correspond as
806 * closely as possible to the time when the first video scanline of
807 * the video frame after the end of VBLANK will start scanning out,
808 * the time immediately after end of the VBLANK interval. If the
809 * @crtc is currently inside VBLANK, this will be a time in the future.
810 * If the @crtc is currently scanning out a frame, this will be the
811 * past start time of the current scanout. This is meant to adhere
812 * to the OpenML OML_sync_control extension specification.
814 * \param dev dev DRM device handle.
815 * \param crtc crtc for which timestamp should be returned.
816 * \param *max_error Maximum allowable timestamp error in nanoseconds.
817 * Implementation should strive to provide timestamp
818 * with an error of at most *max_error nanoseconds.
819 * Returns true upper bound on error for timestamp.
820 * \param *vblank_time Target location for returned vblank timestamp.
821 * \param flags 0 = Defaults, no special treatment needed.
822 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
823 * irq handler. Some drivers need to apply some workarounds
824 * for gpu-specific vblank irq quirks if flag is set.
827 * Zero if timestamping isn't supported in current display mode or a
828 * negative number on failure. A positive status code on success,
829 * which describes how the vblank_time timestamp was computed.
831 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
833 struct timeval *vblank_time,
836 /* these have to be filled in */
838 irqreturn_t(*irq_handler) (int irq, void *arg);
839 void (*irq_preinstall) (struct drm_device *dev);
840 int (*irq_postinstall) (struct drm_device *dev);
841 void (*irq_uninstall) (struct drm_device *dev);
843 /* Master routines */
844 int (*master_create)(struct drm_device *dev, struct drm_master *master);
845 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
847 * master_set is called whenever the minor master is set.
848 * master_drop is called whenever the minor master is dropped.
851 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
853 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
856 int (*debugfs_init)(struct drm_minor *minor);
857 void (*debugfs_cleanup)(struct drm_minor *minor);
860 * Driver-specific constructor for drm_gem_objects, to set up
861 * obj->driver_private.
863 * Returns 0 on success.
865 void (*gem_free_object) (struct drm_gem_object *obj);
866 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
867 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
870 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
871 int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
872 uint32_t handle, uint32_t flags, int *prime_fd);
873 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
874 int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
875 int prime_fd, uint32_t *handle);
876 /* export GEM -> dmabuf */
877 struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
878 struct drm_gem_object *obj, int flags);
879 /* import dmabuf -> GEM */
880 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
881 struct dma_buf *dma_buf);
882 /* low-level interface used by drm_gem_prime_{import,export} */
883 int (*gem_prime_pin)(struct drm_gem_object *obj);
884 void (*gem_prime_unpin)(struct drm_gem_object *obj);
885 struct reservation_object * (*gem_prime_res_obj)(
886 struct drm_gem_object *obj);
887 struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj);
888 struct drm_gem_object *(*gem_prime_import_sg_table)(
889 struct drm_device *dev, size_t size,
890 struct sg_table *sgt);
891 void *(*gem_prime_vmap)(struct drm_gem_object *obj);
892 void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr);
893 int (*gem_prime_mmap)(struct drm_gem_object *obj,
894 struct vm_area_struct *vma);
896 /* vga arb irq handler */
897 void (*vgaarb_irq)(struct drm_device *dev, bool state);
899 /* dumb alloc support */
900 int (*dumb_create)(struct drm_file *file_priv,
901 struct drm_device *dev,
902 struct drm_mode_create_dumb *args);
903 int (*dumb_map_offset)(struct drm_file *file_priv,
904 struct drm_device *dev, uint32_t handle,
906 int (*dumb_destroy)(struct drm_file *file_priv,
907 struct drm_device *dev,
910 /* Driver private ops for this object */
911 const struct vm_operations_struct *gem_vm_ops;
922 const struct drm_ioctl_desc *ioctls;
924 const struct file_operations *fops;
927 /* List of devices hanging off this driver with stealth attach. */
928 struct list_head legacy_dev_list;
931 enum drm_minor_type {
939 * Info file list entry. This structure represents a debugfs or proc file to
940 * be created by the drm core
942 struct drm_info_list {
943 const char *name; /** file name */
944 int (*show)(struct seq_file*, void*); /** show callback */
945 u32 driver_features; /**< Required driver features for this entry */
950 * debugfs node structure. This structure represents a debugfs file.
952 struct drm_info_node {
953 struct list_head list;
954 struct drm_minor *minor;
955 const struct drm_info_list *info_ent;
960 * DRM minor structure. This structure represents a drm minor number.
963 int index; /**< Minor device number */
964 int type; /**< Control or render */
965 struct device *kdev; /**< Linux device */
966 struct drm_device *dev;
968 struct dentry *debugfs_root;
970 struct list_head debugfs_list;
971 struct mutex debugfs_lock; /* Protects debugfs_list. */
973 /* currently active master for this node. Protected by master_mutex */
974 struct drm_master *master;
975 struct drm_mode_group mode_group;
979 struct drm_pending_vblank_event {
980 struct drm_pending_event base;
982 struct drm_event_vblank event;
985 struct drm_vblank_crtc {
986 struct drm_device *dev; /* pointer to the drm_device */
987 wait_queue_head_t queue; /**< VBLANK wait queue */
988 struct timeval time[DRM_VBLANKTIME_RBSIZE]; /**< timestamp of current count */
989 struct timer_list disable_timer; /* delayed disable timer */
990 atomic_t count; /**< number of VBLANK interrupts */
991 atomic_t refcount; /* number of users of vblank interruptsper crtc */
992 u32 last; /* protected by dev->vbl_lock, used */
993 /* for wraparound handling */
994 u32 last_wait; /* Last vblank seqno waited per CRTC */
995 unsigned int inmodeset; /* Display driver is setting mode */
996 int crtc; /* crtc index */
997 bool enabled; /* so we don't call enable more than
1002 * DRM device structure. This structure represent a complete card that
1003 * may contain multiple heads.
1006 struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */
1007 int if_version; /**< Highest interface version set */
1009 /** \name Lifetime Management */
1011 struct kref ref; /**< Object ref-count */
1012 struct device *dev; /**< Device structure of bus-device */
1013 struct drm_driver *driver; /**< DRM driver managing the device */
1014 void *dev_private; /**< DRM driver private data */
1015 struct drm_minor *control; /**< Control node */
1016 struct drm_minor *primary; /**< Primary node */
1017 struct drm_minor *render; /**< Render node */
1018 atomic_t unplugged; /**< Flag whether dev is dead */
1019 struct inode *anon_inode; /**< inode for private address-space */
1020 char *unique; /**< unique name of the device */
1025 struct mutex struct_mutex; /**< For others */
1026 struct mutex master_mutex; /**< For drm_minor::master and drm_file::is_master */
1029 /** \name Usage Counters */
1031 int open_count; /**< Outstanding files open, protected by drm_global_mutex. */
1032 spinlock_t buf_lock; /**< For drm_device::buf_use and a few other things. */
1033 int buf_use; /**< Buffers in use -- cannot alloc */
1034 atomic_t buf_alloc; /**< Buffer allocation in progress */
1037 struct list_head filelist;
1039 /** \name Memory management */
1041 struct list_head maplist; /**< Linked list of regions */
1042 struct drm_open_hash map_hash; /**< User token hash table for maps */
1044 /** \name Context handle management */
1046 struct list_head ctxlist; /**< Linked list of context handles */
1047 struct mutex ctxlist_mutex; /**< For ctxlist */
1051 struct list_head vmalist; /**< List of vmas (for debugging) */
1055 /** \name DMA support */
1057 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1060 /** \name Context support */
1062 bool irq_enabled; /**< True if irq handler is enabled */
1065 __volatile__ long context_flag; /**< Context swapping flag */
1066 int last_context; /**< Last current context */
1069 /** \name VBLANK IRQ support */
1073 * At load time, disabling the vblank interrupt won't be allowed since
1074 * old clients may not call the modeset ioctl and therefore misbehave.
1075 * Once the modeset ioctl *has* been called though, we can safely
1076 * disable them when unused.
1078 bool vblank_disable_allowed;
1080 /* array of size num_crtcs */
1081 struct drm_vblank_crtc *vblank;
1083 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1084 spinlock_t vbl_lock;
1086 u32 max_vblank_count; /**< size of vblank counter register */
1091 struct list_head vblank_event_list;
1092 spinlock_t event_lock;
1096 struct drm_agp_head *agp; /**< AGP data */
1098 struct pci_dev *pdev; /**< PCI device structure */
1100 struct pci_controller *hose;
1103 struct platform_device *platformdev; /**< Platform device struture */
1104 struct usb_device *usbdev;
1106 struct drm_sg_mem *sg; /**< Scatter gather memory */
1107 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1108 struct drm_sigdata sigdata; /**< For block_all_signals */
1111 struct drm_local_map *agp_buffer_map;
1112 unsigned int agp_buffer_token;
1114 struct drm_mode_config mode_config; /**< Current mode config */
1116 /** \name GEM information */
1118 struct mutex object_name_lock;
1119 struct idr object_name_idr;
1120 struct drm_vma_offset_manager *vma_offset_manager;
1122 int switch_power_state;
1125 #define DRM_SWITCH_POWER_ON 0
1126 #define DRM_SWITCH_POWER_OFF 1
1127 #define DRM_SWITCH_POWER_CHANGING 2
1128 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3
1130 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1133 return ((dev->driver->driver_features & feature) ? 1 : 0);
1136 static inline void drm_device_set_unplugged(struct drm_device *dev)
1139 atomic_set(&dev->unplugged, 1);
1142 static inline int drm_device_is_unplugged(struct drm_device *dev)
1144 int ret = atomic_read(&dev->unplugged);
1149 static inline bool drm_is_render_client(const struct drm_file *file_priv)
1151 return file_priv->minor->type == DRM_MINOR_RENDER;
1154 static inline bool drm_is_control_client(const struct drm_file *file_priv)
1156 return file_priv->minor->type == DRM_MINOR_CONTROL;
1159 static inline bool drm_is_primary_client(const struct drm_file *file_priv)
1161 return file_priv->minor->type == DRM_MINOR_LEGACY;
1164 /******************************************************************/
1165 /** \name Internal function definitions */
1168 /* Driver support (drm_drv.h) */
1169 extern long drm_ioctl(struct file *filp,
1170 unsigned int cmd, unsigned long arg);
1171 extern long drm_compat_ioctl(struct file *filp,
1172 unsigned int cmd, unsigned long arg);
1173 extern int drm_lastclose(struct drm_device *dev);
1174 extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
1176 /* Device support (drm_fops.h) */
1177 extern struct mutex drm_global_mutex;
1178 extern int drm_open(struct inode *inode, struct file *filp);
1179 extern ssize_t drm_read(struct file *filp, char __user *buffer,
1180 size_t count, loff_t *offset);
1181 extern int drm_release(struct inode *inode, struct file *filp);
1183 /* Mapping support (drm_vm.h) */
1184 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1185 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1186 extern void drm_vm_open_locked(struct drm_device *dev, struct vm_area_struct *vma);
1187 extern void drm_vm_close_locked(struct drm_device *dev, struct vm_area_struct *vma);
1188 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1190 /* Memory management support (drm_memory.h) */
1191 #include <drm/drm_memory.h>
1194 /* Misc. IOCTL support (drm_ioctl.h) */
1195 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1196 struct drm_file *file_priv);
1197 extern int drm_getunique(struct drm_device *dev, void *data,
1198 struct drm_file *file_priv);
1199 extern int drm_setunique(struct drm_device *dev, void *data,
1200 struct drm_file *file_priv);
1201 extern int drm_getmap(struct drm_device *dev, void *data,
1202 struct drm_file *file_priv);
1203 extern int drm_getclient(struct drm_device *dev, void *data,
1204 struct drm_file *file_priv);
1205 extern int drm_getstats(struct drm_device *dev, void *data,
1206 struct drm_file *file_priv);
1207 extern int drm_getcap(struct drm_device *dev, void *data,
1208 struct drm_file *file_priv);
1209 extern int drm_setclientcap(struct drm_device *dev, void *data,
1210 struct drm_file *file_priv);
1211 extern int drm_setversion(struct drm_device *dev, void *data,
1212 struct drm_file *file_priv);
1213 extern int drm_noop(struct drm_device *dev, void *data,
1214 struct drm_file *file_priv);
1216 /* Authentication IOCTL support (drm_auth.h) */
1217 extern int drm_getmagic(struct drm_device *dev, void *data,
1218 struct drm_file *file_priv);
1219 extern int drm_authmagic(struct drm_device *dev, void *data,
1220 struct drm_file *file_priv);
1221 extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic);
1223 /* Cache management (drm_cache.c) */
1224 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1225 void drm_clflush_sg(struct sg_table *st);
1226 void drm_clflush_virt_range(void *addr, unsigned long length);
1228 /* Locking IOCTL support (drm_lock.h) */
1229 extern int drm_lock(struct drm_device *dev, void *data,
1230 struct drm_file *file_priv);
1231 extern int drm_unlock(struct drm_device *dev, void *data,
1232 struct drm_file *file_priv);
1233 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1234 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1235 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1238 * These are exported to drivers so that they can implement fencing using
1239 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1242 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1244 /* DMA support (drm_dma.h) */
1245 extern int drm_legacy_dma_setup(struct drm_device *dev);
1246 extern void drm_legacy_dma_takedown(struct drm_device *dev);
1247 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1248 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1249 struct drm_file *filp);
1251 /* IRQ support (drm_irq.h) */
1252 extern int drm_control(struct drm_device *dev, void *data,
1253 struct drm_file *file_priv);
1254 extern int drm_irq_install(struct drm_device *dev, int irq);
1255 extern int drm_irq_uninstall(struct drm_device *dev);
1257 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1258 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1259 struct drm_file *filp);
1260 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1261 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1262 struct timeval *vblanktime);
1263 extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
1264 struct drm_pending_vblank_event *e);
1265 extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1266 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1267 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1268 extern int drm_crtc_vblank_get(struct drm_crtc *crtc);
1269 extern void drm_crtc_vblank_put(struct drm_crtc *crtc);
1270 extern void drm_wait_one_vblank(struct drm_device *dev, int crtc);
1271 extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc);
1272 extern void drm_vblank_off(struct drm_device *dev, int crtc);
1273 extern void drm_vblank_on(struct drm_device *dev, int crtc);
1274 extern void drm_crtc_vblank_off(struct drm_crtc *crtc);
1275 extern void drm_crtc_vblank_on(struct drm_crtc *crtc);
1276 extern void drm_vblank_cleanup(struct drm_device *dev);
1278 extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1279 struct timeval *tvblank, unsigned flags);
1280 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1281 int crtc, int *max_error,
1282 struct timeval *vblank_time,
1284 const struct drm_crtc *refcrtc,
1285 const struct drm_display_mode *mode);
1286 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc,
1287 const struct drm_display_mode *mode);
1290 * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC
1291 * @crtc: which CRTC's vblank waitqueue to retrieve
1293 * This function returns a pointer to the vblank waitqueue for the CRTC.
1294 * Drivers can use this to implement vblank waits using wait_event() & co.
1296 static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc)
1298 return &crtc->dev->vblank[drm_crtc_index(crtc)].queue;
1301 /* Modesetting support */
1302 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1303 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1304 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1305 struct drm_file *file_priv);
1307 /* AGP/GART support (drm_agpsupport.h) */
1309 #include <drm/drm_agpsupport.h>
1311 /* Stub support (drm_stub.h) */
1312 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1313 struct drm_file *file_priv);
1314 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1315 struct drm_file *file_priv);
1316 struct drm_master *drm_master_create(struct drm_minor *minor);
1317 extern struct drm_master *drm_master_get(struct drm_master *master);
1318 extern void drm_master_put(struct drm_master **master);
1320 extern void drm_put_dev(struct drm_device *dev);
1321 extern void drm_unplug_dev(struct drm_device *dev);
1322 extern unsigned int drm_debug;
1324 extern unsigned int drm_vblank_offdelay;
1325 extern unsigned int drm_timestamp_precision;
1326 extern unsigned int drm_timestamp_monotonic;
1328 extern struct class *drm_class;
1330 /* Debugfs support */
1331 #if defined(CONFIG_DEBUG_FS)
1332 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1333 struct dentry *root);
1334 extern int drm_debugfs_create_files(const struct drm_info_list *files,
1335 int count, struct dentry *root,
1336 struct drm_minor *minor);
1337 extern int drm_debugfs_remove_files(const struct drm_info_list *files,
1338 int count, struct drm_minor *minor);
1339 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1340 extern int drm_debugfs_connector_add(struct drm_connector *connector);
1341 extern void drm_debugfs_connector_remove(struct drm_connector *connector);
1343 static inline int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1344 struct dentry *root)
1349 static inline int drm_debugfs_create_files(const struct drm_info_list *files,
1350 int count, struct dentry *root,
1351 struct drm_minor *minor)
1356 static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
1357 int count, struct drm_minor *minor)
1362 static inline int drm_debugfs_cleanup(struct drm_minor *minor)
1367 static inline int drm_debugfs_connector_add(struct drm_connector *connector)
1371 static inline void drm_debugfs_connector_remove(struct drm_connector *connector)
1377 /* Info file support */
1378 extern int drm_name_info(struct seq_file *m, void *data);
1379 extern int drm_vm_info(struct seq_file *m, void *data);
1380 extern int drm_bufs_info(struct seq_file *m, void *data);
1381 extern int drm_vblank_info(struct seq_file *m, void *data);
1382 extern int drm_clients_info(struct seq_file *m, void* data);
1383 extern int drm_gem_name_info(struct seq_file *m, void *data);
1386 extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
1387 struct drm_gem_object *obj, int flags);
1388 extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
1389 struct drm_file *file_priv, uint32_t handle, uint32_t flags,
1391 extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
1392 struct dma_buf *dma_buf);
1393 extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
1394 struct drm_file *file_priv, int prime_fd, uint32_t *handle);
1395 extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
1397 extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
1398 struct drm_file *file_priv);
1399 extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data,
1400 struct drm_file *file_priv);
1402 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
1403 dma_addr_t *addrs, int max_pages);
1404 extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages);
1405 extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
1407 int drm_gem_dumb_destroy(struct drm_file *file,
1408 struct drm_device *dev,
1411 void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv);
1412 void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv);
1413 void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf);
1416 extern int drm_vma_info(struct seq_file *m, void *data);
1419 /* Scatter Gather Support (drm_scatter.h) */
1420 extern void drm_legacy_sg_cleanup(struct drm_device *dev);
1421 extern int drm_sg_alloc(struct drm_device *dev, void *data,
1422 struct drm_file *file_priv);
1423 extern int drm_sg_free(struct drm_device *dev, void *data,
1424 struct drm_file *file_priv);
1426 /* ATI PCIGART support (ati_pcigart.h) */
1427 extern int drm_ati_pcigart_init(struct drm_device *dev,
1428 struct drm_ati_pcigart_info * gart_info);
1429 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1430 struct drm_ati_pcigart_info * gart_info);
1432 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1434 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1435 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1436 extern int drm_pci_set_unique(struct drm_device *dev,
1437 struct drm_master *master,
1438 struct drm_unique *u);
1440 /* Legacy Support */
1442 int drm_legacy_addmap(struct drm_device *d, resource_size_t offset,
1443 unsigned int size, enum drm_map_type type,
1444 enum drm_map_flags flags, struct drm_local_map **map_p);
1445 int drm_legacy_rmmap(struct drm_device *d, struct drm_local_map *map);
1446 int drm_legacy_rmmap_locked(struct drm_device *d, struct drm_local_map *map);
1447 struct drm_local_map *drm_legacy_getsarea(struct drm_device *dev);
1449 int drm_legacy_addbufs_agp(struct drm_device *d, struct drm_buf_desc *req);
1450 int drm_legacy_addbufs_pci(struct drm_device *d, struct drm_buf_desc *req);
1452 /* sysfs support (drm_sysfs.c) */
1453 struct drm_sysfs_class;
1454 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1455 extern void drm_sysfs_destroy(void);
1456 extern struct device *drm_sysfs_minor_alloc(struct drm_minor *minor);
1457 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1458 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1459 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1461 /* Graphics Execution Manager library functions (drm_gem.c) */
1462 int drm_gem_init(struct drm_device *dev);
1463 void drm_gem_destroy(struct drm_device *dev);
1464 void drm_gem_object_release(struct drm_gem_object *obj);
1465 void drm_gem_object_free(struct kref *kref);
1466 int drm_gem_object_init(struct drm_device *dev,
1467 struct drm_gem_object *obj, size_t size);
1468 void drm_gem_private_object_init(struct drm_device *dev,
1469 struct drm_gem_object *obj, size_t size);
1470 void drm_gem_vm_open(struct vm_area_struct *vma);
1471 void drm_gem_vm_close(struct vm_area_struct *vma);
1472 int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,
1473 struct vm_area_struct *vma);
1474 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1476 #include <drm/drm_global.h>
1479 drm_gem_object_reference(struct drm_gem_object *obj)
1481 kref_get(&obj->refcount);
1485 drm_gem_object_unreference(struct drm_gem_object *obj)
1488 kref_put(&obj->refcount, drm_gem_object_free);
1492 drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1494 if (obj && !atomic_add_unless(&obj->refcount.refcount, -1, 1)) {
1495 struct drm_device *dev = obj->dev;
1497 mutex_lock(&dev->struct_mutex);
1498 if (likely(atomic_dec_and_test(&obj->refcount.refcount)))
1499 drm_gem_object_free(&obj->refcount);
1500 mutex_unlock(&dev->struct_mutex);
1504 int drm_gem_handle_create_tail(struct drm_file *file_priv,
1505 struct drm_gem_object *obj,
1507 int drm_gem_handle_create(struct drm_file *file_priv,
1508 struct drm_gem_object *obj,
1510 int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
1513 void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
1514 int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
1515 int drm_gem_create_mmap_offset_size(struct drm_gem_object *obj, size_t size);
1517 struct page **drm_gem_get_pages(struct drm_gem_object *obj);
1518 void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages,
1519 bool dirty, bool accessed);
1521 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1522 struct drm_file *filp,
1524 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1525 struct drm_file *file_priv);
1526 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1527 struct drm_file *file_priv);
1528 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1529 struct drm_file *file_priv);
1530 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1531 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1533 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1534 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1535 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1537 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1540 struct drm_map_list *_entry;
1541 list_for_each_entry(_entry, &dev->maplist, head)
1542 if (_entry->user_token == token)
1547 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1551 #include <drm/drm_mem_util.h>
1553 struct drm_device *drm_dev_alloc(struct drm_driver *driver,
1554 struct device *parent);
1555 void drm_dev_ref(struct drm_device *dev);
1556 void drm_dev_unref(struct drm_device *dev);
1557 int drm_dev_register(struct drm_device *dev, unsigned long flags);
1558 void drm_dev_unregister(struct drm_device *dev);
1559 int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...);
1561 struct drm_minor *drm_minor_acquire(unsigned int minor_id);
1562 void drm_minor_release(struct drm_minor *minor);
1567 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1569 if (dev->driver->device_is_agp != NULL) {
1570 int err = (*dev->driver->device_is_agp) (dev);
1577 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1579 void drm_pci_agp_destroy(struct drm_device *dev);
1581 extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1582 extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1583 extern int drm_get_pci_dev(struct pci_dev *pdev,
1584 const struct pci_device_id *ent,
1585 struct drm_driver *driver);
1587 #define DRM_PCIE_SPEED_25 1
1588 #define DRM_PCIE_SPEED_50 2
1589 #define DRM_PCIE_SPEED_80 4
1591 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
1593 /* platform section */
1594 extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1596 /* returns true if currently okay to sleep */
1597 static __inline__ bool drm_can_sleep(void)
1599 if (in_atomic() || in_dbg_master() || irqs_disabled())
1604 #endif /* __KERNEL__ */