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.
38 #include <linux/sched.h>
39 #include <linux/kernel.h>
40 #include <linux/kref.h>
41 #include <linux/miscdevice.h>
43 #include <linux/init.h>
44 #include <linux/file.h>
45 #include <linux/platform_device.h>
46 #include <linux/pci.h>
47 #include <linux/jiffies.h>
48 #include <linux/dma-mapping.h>
50 #include <linux/cdev.h>
51 #include <linux/mutex.h>
53 #include <linux/slab.h>
54 #include <linux/ratelimit.h>
56 #include <asm/uaccess.h>
57 #include <linux/types.h>
58 #include <linux/agp_backend.h>
59 #include <linux/workqueue.h>
60 #include <linux/poll.h>
61 #include <linux/highmem.h>
62 #include <linux/vmalloc.h>
63 #include <asm/pgalloc.h>
65 #include <drm/drm_sarea.h>
66 #include <drm/drm_vma_manager.h>
68 #include <linux/idr.h>
78 struct reservation_object
;
80 #include <drm/drm_os_linux.h>
81 #include <drm/drm_hashtab.h>
82 #include <drm/drm_mm.h>
85 * 4 debug categories are defined:
87 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...
88 * This is the category used by the DRM_DEBUG() macro.
90 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...
91 * This is the category used by the DRM_DEBUG_DRIVER() macro.
93 * KMS: used in the modesetting code.
94 * This is the category used by the DRM_DEBUG_KMS() macro.
96 * PRIME: used in the prime code.
97 * This is the category used by the DRM_DEBUG_PRIME() macro.
99 * Enabling verbose debug messages is done through the drm.debug parameter,
100 * each category being enabled by a bit.
102 * drm.debug=0x1 will enable CORE messages
103 * drm.debug=0x2 will enable DRIVER messages
104 * drm.debug=0x3 will enable CORE and DRIVER messages
106 * drm.debug=0xf will enable all messages
108 * An interesting feature is that it's possible to enable verbose logging at
109 * run-time by echoing the debug value in its sysfs node:
110 * # echo 0xf > /sys/module/drm/parameters/debug
112 #define DRM_UT_CORE 0x01
113 #define DRM_UT_DRIVER 0x02
114 #define DRM_UT_KMS 0x04
115 #define DRM_UT_PRIME 0x08
117 extern __printf(2, 3)
118 void drm_ut_debug_printk(const char *function_name
,
119 const char *format
, ...);
120 extern __printf(2, 3)
121 int drm_err(const char *func
, const char *format
, ...);
123 /***********************************************************************/
124 /** \name DRM template customization defaults */
127 /* driver capabilities and requirements mask */
128 #define DRIVER_USE_AGP 0x1
129 #define DRIVER_PCI_DMA 0x8
130 #define DRIVER_SG 0x10
131 #define DRIVER_HAVE_DMA 0x20
132 #define DRIVER_HAVE_IRQ 0x40
133 #define DRIVER_IRQ_SHARED 0x80
134 #define DRIVER_GEM 0x1000
135 #define DRIVER_MODESET 0x2000
136 #define DRIVER_PRIME 0x4000
137 #define DRIVER_RENDER 0x8000
139 /***********************************************************************/
140 /** \name Begin the DRM... */
143 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
144 also include looping detection. */
146 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
150 /***********************************************************************/
151 /** \name Macros to make printk easier */
157 * \param fmt printf() like format string.
158 * \param arg arguments
160 #define DRM_ERROR(fmt, ...) \
161 drm_err(__func__, fmt, ##__VA_ARGS__)
164 * Rate limited error output. Like DRM_ERROR() but won't flood the log.
166 * \param fmt printf() like format string.
167 * \param arg arguments
169 #define DRM_ERROR_RATELIMITED(fmt, ...) \
171 static DEFINE_RATELIMIT_STATE(_rs, \
172 DEFAULT_RATELIMIT_INTERVAL, \
173 DEFAULT_RATELIMIT_BURST); \
175 if (__ratelimit(&_rs)) \
176 drm_err(__func__, fmt, ##__VA_ARGS__); \
179 #define DRM_INFO(fmt, ...) \
180 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
182 #define DRM_INFO_ONCE(fmt, ...) \
183 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
188 * \param fmt printf() like format string.
189 * \param arg arguments
192 #define DRM_DEBUG(fmt, args...) \
194 if (unlikely(drm_debug & DRM_UT_CORE)) \
195 drm_ut_debug_printk(__func__, fmt, ##args); \
198 #define DRM_DEBUG_DRIVER(fmt, args...) \
200 if (unlikely(drm_debug & DRM_UT_DRIVER)) \
201 drm_ut_debug_printk(__func__, fmt, ##args); \
203 #define DRM_DEBUG_KMS(fmt, args...) \
205 if (unlikely(drm_debug & DRM_UT_KMS)) \
206 drm_ut_debug_printk(__func__, fmt, ##args); \
208 #define DRM_DEBUG_PRIME(fmt, args...) \
210 if (unlikely(drm_debug & DRM_UT_PRIME)) \
211 drm_ut_debug_printk(__func__, fmt, ##args); \
214 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
215 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
216 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
217 #define DRM_DEBUG(fmt, arg...) do { } while (0)
222 /***********************************************************************/
223 /** \name Internal types and structures */
226 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
229 * Test that the hardware lock is held by the caller, returning otherwise.
231 * \param dev DRM device.
232 * \param filp file pointer of the caller.
234 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
236 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
237 _file_priv->master->lock.file_priv != _file_priv) { \
238 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
239 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
240 _file_priv->master->lock.file_priv, _file_priv); \
246 * Ioctl function type.
248 * \param inode device inode.
249 * \param file_priv DRM file private pointer.
250 * \param cmd command.
251 * \param arg argument.
253 typedef int drm_ioctl_t(struct drm_device
*dev
, void *data
,
254 struct drm_file
*file_priv
);
256 typedef int drm_ioctl_compat_t(struct file
*filp
, unsigned int cmd
,
259 #define DRM_IOCTL_NR(n) _IOC_NR(n)
260 #define DRM_MAJOR 226
263 #define DRM_MASTER 0x2
264 #define DRM_ROOT_ONLY 0x4
265 #define DRM_CONTROL_ALLOW 0x8
266 #define DRM_UNLOCKED 0x10
267 #define DRM_RENDER_ALLOW 0x20
269 struct drm_ioctl_desc
{
273 unsigned int cmd_drv
;
278 * Creates a driver or general drm_ioctl_desc array entry for the given
279 * ioctl, for use by drm_ioctl().
282 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
283 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
289 int idx
; /**< Index into master buflist */
290 int total
; /**< Buffer size */
291 int order
; /**< log-base-2(total) */
292 int used
; /**< Amount of buffer in use (for DMA) */
293 unsigned long offset
; /**< Byte offset (used internally) */
294 void *address
; /**< Address of buffer */
295 unsigned long bus_address
; /**< Bus address of buffer */
296 struct drm_buf
*next
; /**< Kernel-only: used for free list */
297 __volatile__
int waiting
; /**< On kernel DMA queue */
298 __volatile__
int pending
; /**< On hardware DMA queue */
299 struct drm_file
*file_priv
; /**< Private of holding file descr */
300 int context
; /**< Kernel queue for this buffer */
301 int while_locked
; /**< Dispatch this buffer while locked */
309 } list
; /**< Which list we're on */
311 int dev_priv_size
; /**< Size of buffer private storage */
312 void *dev_private
; /**< Per-buffer private storage */
315 typedef struct drm_dma_handle
{
322 * Buffer entry. There is one of this for each buffer size order.
324 struct drm_buf_entry
{
325 int buf_size
; /**< size */
326 int buf_count
; /**< number of buffers */
327 struct drm_buf
*buflist
; /**< buffer list */
330 struct drm_dma_handle
**seglist
;
332 int low_mark
; /**< Low water mark */
333 int high_mark
; /**< High water mark */
336 /* Event queued up for userspace to read */
337 struct drm_pending_event
{
338 struct drm_event
*event
;
339 struct list_head link
;
340 struct drm_file
*file_priv
;
341 pid_t pid
; /* pid of requester, no guarantee it's valid by the time
342 we deliver the event, for tracing only */
343 void (*destroy
)(struct drm_pending_event
*event
);
346 /* initial implementaton using a linked list - todo hashtab */
347 struct drm_prime_file_private
{
348 struct list_head head
;
352 /** File private data */
354 unsigned authenticated
:1;
355 /* Whether we're master for a minor. Protected by master_mutex */
356 unsigned is_master
:1;
357 /* true when the client has asked us to expose stereo 3D mode flags */
358 unsigned stereo_allowed
:1;
360 * true if client understands CRTC primary planes and cursor planes
363 unsigned universal_planes
:1;
368 struct list_head lhead
;
369 struct drm_minor
*minor
;
370 unsigned long lock_count
;
372 /** Mapping of mm object handles to object pointers. */
373 struct idr object_idr
;
374 /** Lock for synchronization of access to object_idr. */
375 spinlock_t table_lock
;
380 struct drm_master
*master
; /* master this node is currently associated with
381 N.B. not always minor->master */
383 * fbs - List of framebuffers associated with this file.
385 * Protected by fbs_lock. Note that the fbs list holds a reference on
386 * the fb object to prevent it from untimely disappearing.
388 struct list_head fbs
;
389 struct mutex fbs_lock
;
391 wait_queue_head_t event_wait
;
392 struct list_head event_list
;
395 struct drm_prime_file_private prime
;
401 struct drm_lock_data
{
402 struct drm_hw_lock
*hw_lock
; /**< Hardware lock */
403 /** Private of lock holder's file (NULL=kernel) */
404 struct drm_file
*file_priv
;
405 wait_queue_head_t lock_queue
; /**< Queue of blocked processes */
406 unsigned long lock_time
; /**< Time of last lock in jiffies */
408 uint32_t kernel_waiters
;
409 uint32_t user_waiters
;
416 struct drm_device_dma
{
418 struct drm_buf_entry bufs
[DRM_MAX_ORDER
+ 1]; /**< buffers, grouped by their size order */
419 int buf_count
; /**< total number of buffers */
420 struct drm_buf
**buflist
; /**< Vector of pointers into drm_device_dma::bufs */
422 int page_count
; /**< number of pages */
423 unsigned long *pagelist
; /**< page list */
424 unsigned long byte_count
;
426 _DRM_DMA_USE_AGP
= 0x01,
427 _DRM_DMA_USE_SG
= 0x02,
428 _DRM_DMA_USE_FB
= 0x04,
429 _DRM_DMA_USE_PCI_RO
= 0x08
435 * Scatter-gather memory.
438 unsigned long handle
;
441 struct page
**pagelist
;
447 struct drm_hw_lock
*lock
;
452 * Kernel side of a mapping
454 struct drm_local_map
{
455 resource_size_t offset
; /**< Requested physical address (0 for SAREA)*/
456 unsigned long size
; /**< Requested physical size (bytes) */
457 enum drm_map_type type
; /**< Type of memory to map */
458 enum drm_map_flags flags
; /**< Flags */
459 void *handle
; /**< User-space: "Handle" to pass to mmap() */
460 /**< Kernel-space: kernel-virtual address */
461 int mtrr
; /**< MTRR slot used */
464 typedef struct drm_local_map drm_local_map_t
;
469 struct drm_map_list
{
470 struct list_head head
; /**< list head */
471 struct drm_hash_item hash
;
472 struct drm_local_map
*map
; /**< mapping */
474 struct drm_master
*master
;
477 /* location of GART table */
478 #define DRM_ATI_GART_MAIN 1
479 #define DRM_ATI_GART_FB 2
481 #define DRM_ATI_GART_PCI 1
482 #define DRM_ATI_GART_PCIE 2
483 #define DRM_ATI_GART_IGP 3
485 struct drm_ati_pcigart_info
{
486 int gart_table_location
;
490 dma_addr_t table_mask
;
491 struct drm_dma_handle
*table_handle
;
492 struct drm_local_map mapping
;
497 * This structure defines the drm_mm memory object, which will be used by the
498 * DRM for its buffer objects.
500 struct drm_gem_object
{
501 /** Reference count of this object */
502 struct kref refcount
;
505 * handle_count - gem file_priv handle count of this object
507 * Each handle also holds a reference. Note that when the handle_count
508 * drops to 0 any global names (e.g. the id in the flink namespace) will
511 * Protected by dev->object_name_lock.
513 unsigned handle_count
;
515 /** Related drm device */
516 struct drm_device
*dev
;
518 /** File representing the shmem storage */
521 /* Mapping info for this object */
522 struct drm_vma_offset_node vma_node
;
525 * Size of the object, in bytes. Immutable over the object's
531 * Global name for this object, starts at 1. 0 means unnamed.
532 * Access is covered by the object_name_lock in the related drm_device
537 * Memory domains. These monitor which caches contain read/write data
538 * related to the object. When transitioning from one set of domains
539 * to another, the driver is called to ensure that caches are suitably
540 * flushed and invalidated
542 uint32_t read_domains
;
543 uint32_t write_domain
;
546 * While validating an exec operation, the
547 * new read/write domain values are computed here.
548 * They will be transferred to the above values
549 * at the point that any cache flushing occurs
551 uint32_t pending_read_domains
;
552 uint32_t pending_write_domain
;
555 * dma_buf - dma buf associated with this GEM object
557 * Pointer to the dma-buf associated with this gem object (either
558 * through importing or exporting). We break the resulting reference
559 * loop when the last gem handle for this object is released.
561 * Protected by obj->object_name_lock
563 struct dma_buf
*dma_buf
;
566 * import_attach - dma buf attachment backing this object
568 * Any foreign dma_buf imported as a gem object has this set to the
569 * attachment point for the device. This is invariant over the lifetime
572 * The driver's ->gem_free_object callback is responsible for cleaning
573 * up the dma_buf attachment and references acquired at import time.
575 * Note that the drm gem/prime core does not depend upon drivers setting
576 * this field any more. So for drivers where this doesn't make sense
577 * (e.g. virtual devices or a displaylink behind an usb bus) they can
578 * simply leave it as NULL.
580 struct dma_buf_attachment
*import_attach
;
583 #include <drm/drm_crtc.h>
586 * struct drm_master - drm master structure
588 * @refcount: Refcount for this master object.
589 * @minor: Link back to minor char device we are master for. Immutable.
590 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
591 * @unique_len: Length of unique field. Protected by drm_global_mutex.
592 * @unique_size: Amount allocated. Protected by drm_global_mutex.
593 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex.
594 * @magicfree: List of used authentication tokens. Protected by struct_mutex.
595 * @lock: DRI lock information.
596 * @driver_priv: Pointer to driver-private information.
599 struct kref refcount
;
600 struct drm_minor
*minor
;
604 struct drm_open_hash magiclist
;
605 struct list_head magicfree
;
606 struct drm_lock_data lock
;
610 /* Size of ringbuffer for vblank timestamps. Just double-buffer
611 * in initial implementation.
613 #define DRM_VBLANKTIME_RBSIZE 2
615 /* Flags and return codes for get_vblank_timestamp() driver function. */
616 #define DRM_CALLED_FROM_VBLIRQ 1
617 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
618 #define DRM_VBLANKTIME_INVBL (1 << 1)
620 /* get_scanout_position() return flags */
621 #define DRM_SCANOUTPOS_VALID (1 << 0)
622 #define DRM_SCANOUTPOS_INVBL (1 << 1)
623 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
626 int (*set_busid
)(struct drm_device
*dev
, struct drm_master
*master
);
630 * DRM driver structure. This structure represent the common code for
631 * a family of cards. There will one drm_device for each card present
635 int (*load
) (struct drm_device
*, unsigned long flags
);
636 int (*firstopen
) (struct drm_device
*);
637 int (*open
) (struct drm_device
*, struct drm_file
*);
638 void (*preclose
) (struct drm_device
*, struct drm_file
*file_priv
);
639 void (*postclose
) (struct drm_device
*, struct drm_file
*);
640 void (*lastclose
) (struct drm_device
*);
641 int (*unload
) (struct drm_device
*);
642 int (*suspend
) (struct drm_device
*, pm_message_t state
);
643 int (*resume
) (struct drm_device
*);
644 int (*dma_ioctl
) (struct drm_device
*dev
, void *data
, struct drm_file
*file_priv
);
645 int (*dma_quiescent
) (struct drm_device
*);
646 int (*context_dtor
) (struct drm_device
*dev
, int context
);
649 * get_vblank_counter - get raw hardware vblank counter
651 * @crtc: counter to fetch
653 * Driver callback for fetching a raw hardware vblank counter for @crtc.
654 * If a device doesn't have a hardware counter, the driver can simply
655 * return the value of drm_vblank_count. The DRM core will account for
656 * missed vblank events while interrupts where disabled based on system
659 * Wraparound handling and loss of events due to modesetting is dealt
660 * with in the DRM core code.
663 * Raw vblank counter value.
665 u32 (*get_vblank_counter
) (struct drm_device
*dev
, int crtc
);
668 * enable_vblank - enable vblank interrupt events
670 * @crtc: which irq to enable
672 * Enable vblank interrupts for @crtc. If the device doesn't have
673 * a hardware vblank counter, this routine should be a no-op, since
674 * interrupts will have to stay on to keep the count accurate.
677 * Zero on success, appropriate errno if the given @crtc's vblank
678 * interrupt cannot be enabled.
680 int (*enable_vblank
) (struct drm_device
*dev
, int crtc
);
683 * disable_vblank - disable vblank interrupt events
685 * @crtc: which irq to enable
687 * Disable vblank interrupts for @crtc. If the device doesn't have
688 * a hardware vblank counter, this routine should be a no-op, since
689 * interrupts will have to stay on to keep the count accurate.
691 void (*disable_vblank
) (struct drm_device
*dev
, int crtc
);
694 * Called by \c drm_device_is_agp. Typically used to determine if a
695 * card is really attached to AGP or not.
697 * \param dev DRM device handle
700 * One of three values is returned depending on whether or not the
701 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
702 * (return of 1), or may or may not be AGP (return of 2).
704 int (*device_is_agp
) (struct drm_device
*dev
);
707 * Called by vblank timestamping code.
709 * Return the current display scanout position from a crtc, and an
710 * optional accurate ktime_get timestamp of when position was measured.
712 * \param dev DRM device.
713 * \param crtc Id of the crtc to query.
714 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
715 * \param *vpos Target location for current vertical scanout position.
716 * \param *hpos Target location for current horizontal scanout position.
717 * \param *stime Target location for timestamp taken immediately before
718 * scanout position query. Can be NULL to skip timestamp.
719 * \param *etime Target location for timestamp taken immediately after
720 * scanout position query. Can be NULL to skip timestamp.
722 * Returns vpos as a positive number while in active scanout area.
723 * Returns vpos as a negative number inside vblank, counting the number
724 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
725 * until start of active scanout / end of vblank."
727 * \return Flags, or'ed together as follows:
729 * DRM_SCANOUTPOS_VALID = Query successful.
730 * DRM_SCANOUTPOS_INVBL = Inside vblank.
731 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
732 * this flag means that returned position may be offset by a constant
733 * but unknown small number of scanlines wrt. real scanout position.
736 int (*get_scanout_position
) (struct drm_device
*dev
, int crtc
,
738 int *vpos
, int *hpos
, ktime_t
*stime
,
742 * Called by \c drm_get_last_vbltimestamp. Should return a precise
743 * timestamp when the most recent VBLANK interval ended or will end.
745 * Specifically, the timestamp in @vblank_time should correspond as
746 * closely as possible to the time when the first video scanline of
747 * the video frame after the end of VBLANK will start scanning out,
748 * the time immediately after end of the VBLANK interval. If the
749 * @crtc is currently inside VBLANK, this will be a time in the future.
750 * If the @crtc is currently scanning out a frame, this will be the
751 * past start time of the current scanout. This is meant to adhere
752 * to the OpenML OML_sync_control extension specification.
754 * \param dev dev DRM device handle.
755 * \param crtc crtc for which timestamp should be returned.
756 * \param *max_error Maximum allowable timestamp error in nanoseconds.
757 * Implementation should strive to provide timestamp
758 * with an error of at most *max_error nanoseconds.
759 * Returns true upper bound on error for timestamp.
760 * \param *vblank_time Target location for returned vblank timestamp.
761 * \param flags 0 = Defaults, no special treatment needed.
762 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
763 * irq handler. Some drivers need to apply some workarounds
764 * for gpu-specific vblank irq quirks if flag is set.
767 * Zero if timestamping isn't supported in current display mode or a
768 * negative number on failure. A positive status code on success,
769 * which describes how the vblank_time timestamp was computed.
771 int (*get_vblank_timestamp
) (struct drm_device
*dev
, int crtc
,
773 struct timeval
*vblank_time
,
776 /* these have to be filled in */
778 irqreturn_t(*irq_handler
) (int irq
, void *arg
);
779 void (*irq_preinstall
) (struct drm_device
*dev
);
780 int (*irq_postinstall
) (struct drm_device
*dev
);
781 void (*irq_uninstall
) (struct drm_device
*dev
);
783 /* Master routines */
784 int (*master_create
)(struct drm_device
*dev
, struct drm_master
*master
);
785 void (*master_destroy
)(struct drm_device
*dev
, struct drm_master
*master
);
787 * master_set is called whenever the minor master is set.
788 * master_drop is called whenever the minor master is dropped.
791 int (*master_set
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
793 void (*master_drop
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
796 int (*debugfs_init
)(struct drm_minor
*minor
);
797 void (*debugfs_cleanup
)(struct drm_minor
*minor
);
800 * Driver-specific constructor for drm_gem_objects, to set up
801 * obj->driver_private.
803 * Returns 0 on success.
805 void (*gem_free_object
) (struct drm_gem_object
*obj
);
806 int (*gem_open_object
) (struct drm_gem_object
*, struct drm_file
*);
807 void (*gem_close_object
) (struct drm_gem_object
*, struct drm_file
*);
810 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
811 int (*prime_handle_to_fd
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
812 uint32_t handle
, uint32_t flags
, int *prime_fd
);
813 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
814 int (*prime_fd_to_handle
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
815 int prime_fd
, uint32_t *handle
);
816 /* export GEM -> dmabuf */
817 struct dma_buf
* (*gem_prime_export
)(struct drm_device
*dev
,
818 struct drm_gem_object
*obj
, int flags
);
819 /* import dmabuf -> GEM */
820 struct drm_gem_object
* (*gem_prime_import
)(struct drm_device
*dev
,
821 struct dma_buf
*dma_buf
);
822 /* low-level interface used by drm_gem_prime_{import,export} */
823 int (*gem_prime_pin
)(struct drm_gem_object
*obj
);
824 void (*gem_prime_unpin
)(struct drm_gem_object
*obj
);
825 struct reservation_object
* (*gem_prime_res_obj
)(
826 struct drm_gem_object
*obj
);
827 struct sg_table
*(*gem_prime_get_sg_table
)(struct drm_gem_object
*obj
);
828 struct drm_gem_object
*(*gem_prime_import_sg_table
)(
829 struct drm_device
*dev
, size_t size
,
830 struct sg_table
*sgt
);
831 void *(*gem_prime_vmap
)(struct drm_gem_object
*obj
);
832 void (*gem_prime_vunmap
)(struct drm_gem_object
*obj
, void *vaddr
);
833 int (*gem_prime_mmap
)(struct drm_gem_object
*obj
,
834 struct vm_area_struct
*vma
);
836 /* vga arb irq handler */
837 void (*vgaarb_irq
)(struct drm_device
*dev
, bool state
);
839 /* dumb alloc support */
840 int (*dumb_create
)(struct drm_file
*file_priv
,
841 struct drm_device
*dev
,
842 struct drm_mode_create_dumb
*args
);
843 int (*dumb_map_offset
)(struct drm_file
*file_priv
,
844 struct drm_device
*dev
, uint32_t handle
,
846 int (*dumb_destroy
)(struct drm_file
*file_priv
,
847 struct drm_device
*dev
,
850 /* Driver private ops for this object */
851 const struct vm_operations_struct
*gem_vm_ops
;
862 const struct drm_ioctl_desc
*ioctls
;
864 const struct file_operations
*fops
;
867 /* List of devices hanging off this driver with stealth attach. */
868 struct list_head legacy_dev_list
;
871 enum drm_minor_type
{
879 * Info file list entry. This structure represents a debugfs or proc file to
880 * be created by the drm core
882 struct drm_info_list
{
883 const char *name
; /** file name */
884 int (*show
)(struct seq_file
*, void*); /** show callback */
885 u32 driver_features
; /**< Required driver features for this entry */
890 * debugfs node structure. This structure represents a debugfs file.
892 struct drm_info_node
{
893 struct list_head list
;
894 struct drm_minor
*minor
;
895 const struct drm_info_list
*info_ent
;
900 * DRM minor structure. This structure represents a drm minor number.
903 int index
; /**< Minor device number */
904 int type
; /**< Control or render */
905 struct device
*kdev
; /**< Linux device */
906 struct drm_device
*dev
;
908 struct dentry
*debugfs_root
;
910 struct list_head debugfs_list
;
911 struct mutex debugfs_lock
; /* Protects debugfs_list. */
913 /* currently active master for this node. Protected by master_mutex */
914 struct drm_master
*master
;
915 struct drm_mode_group mode_group
;
919 struct drm_pending_vblank_event
{
920 struct drm_pending_event base
;
922 struct drm_event_vblank event
;
925 struct drm_vblank_crtc
{
926 struct drm_device
*dev
; /* pointer to the drm_device */
927 wait_queue_head_t queue
; /**< VBLANK wait queue */
928 struct timeval time
[DRM_VBLANKTIME_RBSIZE
]; /**< timestamp of current count */
929 struct timer_list disable_timer
; /* delayed disable timer */
930 atomic_t count
; /**< number of VBLANK interrupts */
931 atomic_t refcount
; /* number of users of vblank interruptsper crtc */
932 u32 last
; /* protected by dev->vbl_lock, used */
933 /* for wraparound handling */
934 u32 last_wait
; /* Last vblank seqno waited per CRTC */
935 unsigned int inmodeset
; /* Display driver is setting mode */
936 int crtc
; /* crtc index */
937 bool enabled
; /* so we don't call enable more than
942 * DRM device structure. This structure represent a complete card that
943 * may contain multiple heads.
946 struct list_head legacy_dev_list
;/**< list of devices per driver for stealth attach cleanup */
947 int if_version
; /**< Highest interface version set */
949 /** \name Lifetime Management */
951 struct kref ref
; /**< Object ref-count */
952 struct device
*dev
; /**< Device structure of bus-device */
953 struct drm_driver
*driver
; /**< DRM driver managing the device */
954 void *dev_private
; /**< DRM driver private data */
955 struct drm_minor
*control
; /**< Control node */
956 struct drm_minor
*primary
; /**< Primary node */
957 struct drm_minor
*render
; /**< Render node */
958 atomic_t unplugged
; /**< Flag whether dev is dead */
959 struct inode
*anon_inode
; /**< inode for private address-space */
960 char *unique
; /**< unique name of the device */
965 struct mutex struct_mutex
; /**< For others */
966 struct mutex master_mutex
; /**< For drm_minor::master and drm_file::is_master */
969 /** \name Usage Counters */
971 int open_count
; /**< Outstanding files open, protected by drm_global_mutex. */
972 spinlock_t buf_lock
; /**< For drm_device::buf_use and a few other things. */
973 int buf_use
; /**< Buffers in use -- cannot alloc */
974 atomic_t buf_alloc
; /**< Buffer allocation in progress */
977 struct list_head filelist
;
979 /** \name Memory management */
981 struct list_head maplist
; /**< Linked list of regions */
982 struct drm_open_hash map_hash
; /**< User token hash table for maps */
984 /** \name Context handle management */
986 struct list_head ctxlist
; /**< Linked list of context handles */
987 struct mutex ctxlist_mutex
; /**< For ctxlist */
991 struct list_head vmalist
; /**< List of vmas (for debugging) */
995 /** \name DMA support */
997 struct drm_device_dma
*dma
; /**< Optional pointer for DMA support */
1000 /** \name Context support */
1002 bool irq_enabled
; /**< True if irq handler is enabled */
1005 __volatile__
long context_flag
; /**< Context swapping flag */
1006 int last_context
; /**< Last current context */
1009 /** \name VBLANK IRQ support */
1013 * At load time, disabling the vblank interrupt won't be allowed since
1014 * old clients may not call the modeset ioctl and therefore misbehave.
1015 * Once the modeset ioctl *has* been called though, we can safely
1016 * disable them when unused.
1018 bool vblank_disable_allowed
;
1020 /* array of size num_crtcs */
1021 struct drm_vblank_crtc
*vblank
;
1023 spinlock_t vblank_time_lock
; /**< Protects vblank count and time updates during vblank enable/disable */
1024 spinlock_t vbl_lock
;
1026 u32 max_vblank_count
; /**< size of vblank counter register */
1031 struct list_head vblank_event_list
;
1032 spinlock_t event_lock
;
1036 struct drm_agp_head
*agp
; /**< AGP data */
1038 struct pci_dev
*pdev
; /**< PCI device structure */
1040 struct pci_controller
*hose
;
1043 struct platform_device
*platformdev
; /**< Platform device struture */
1044 struct usb_device
*usbdev
;
1046 struct drm_sg_mem
*sg
; /**< Scatter gather memory */
1047 unsigned int num_crtcs
; /**< Number of CRTCs on this device */
1048 struct drm_sigdata sigdata
; /**< For block_all_signals */
1051 struct drm_local_map
*agp_buffer_map
;
1052 unsigned int agp_buffer_token
;
1054 struct drm_mode_config mode_config
; /**< Current mode config */
1056 /** \name GEM information */
1058 struct mutex object_name_lock
;
1059 struct idr object_name_idr
;
1060 struct drm_vma_offset_manager
*vma_offset_manager
;
1062 int switch_power_state
;
1065 #define DRM_SWITCH_POWER_ON 0
1066 #define DRM_SWITCH_POWER_OFF 1
1067 #define DRM_SWITCH_POWER_CHANGING 2
1068 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3
1070 static __inline__
int drm_core_check_feature(struct drm_device
*dev
,
1073 return ((dev
->driver
->driver_features
& feature
) ? 1 : 0);
1076 static inline void drm_device_set_unplugged(struct drm_device
*dev
)
1079 atomic_set(&dev
->unplugged
, 1);
1082 static inline int drm_device_is_unplugged(struct drm_device
*dev
)
1084 int ret
= atomic_read(&dev
->unplugged
);
1089 static inline bool drm_is_render_client(const struct drm_file
*file_priv
)
1091 return file_priv
->minor
->type
== DRM_MINOR_RENDER
;
1094 static inline bool drm_is_control_client(const struct drm_file
*file_priv
)
1096 return file_priv
->minor
->type
== DRM_MINOR_CONTROL
;
1099 static inline bool drm_is_primary_client(const struct drm_file
*file_priv
)
1101 return file_priv
->minor
->type
== DRM_MINOR_LEGACY
;
1104 /******************************************************************/
1105 /** \name Internal function definitions */
1108 /* Driver support (drm_drv.h) */
1109 extern long drm_ioctl(struct file
*filp
,
1110 unsigned int cmd
, unsigned long arg
);
1111 extern long drm_compat_ioctl(struct file
*filp
,
1112 unsigned int cmd
, unsigned long arg
);
1113 extern int drm_lastclose(struct drm_device
*dev
);
1114 extern bool drm_ioctl_flags(unsigned int nr
, unsigned int *flags
);
1116 /* Device support (drm_fops.h) */
1117 extern struct mutex drm_global_mutex
;
1118 extern int drm_open(struct inode
*inode
, struct file
*filp
);
1119 extern ssize_t
drm_read(struct file
*filp
, char __user
*buffer
,
1120 size_t count
, loff_t
*offset
);
1121 extern int drm_release(struct inode
*inode
, struct file
*filp
);
1123 /* Mapping support (drm_vm.h) */
1124 extern int drm_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1125 extern int drm_mmap_locked(struct file
*filp
, struct vm_area_struct
*vma
);
1126 extern void drm_vm_open_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1127 extern void drm_vm_close_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1128 extern unsigned int drm_poll(struct file
*filp
, struct poll_table_struct
*wait
);
1130 /* Misc. IOCTL support (drm_ioctl.h) */
1131 extern int drm_irq_by_busid(struct drm_device
*dev
, void *data
,
1132 struct drm_file
*file_priv
);
1133 extern int drm_getunique(struct drm_device
*dev
, void *data
,
1134 struct drm_file
*file_priv
);
1135 extern int drm_setunique(struct drm_device
*dev
, void *data
,
1136 struct drm_file
*file_priv
);
1137 extern int drm_getmap(struct drm_device
*dev
, void *data
,
1138 struct drm_file
*file_priv
);
1139 extern int drm_getclient(struct drm_device
*dev
, void *data
,
1140 struct drm_file
*file_priv
);
1141 extern int drm_getstats(struct drm_device
*dev
, void *data
,
1142 struct drm_file
*file_priv
);
1143 extern int drm_getcap(struct drm_device
*dev
, void *data
,
1144 struct drm_file
*file_priv
);
1145 extern int drm_setclientcap(struct drm_device
*dev
, void *data
,
1146 struct drm_file
*file_priv
);
1147 extern int drm_setversion(struct drm_device
*dev
, void *data
,
1148 struct drm_file
*file_priv
);
1149 extern int drm_noop(struct drm_device
*dev
, void *data
,
1150 struct drm_file
*file_priv
);
1152 /* Authentication IOCTL support (drm_auth.h) */
1153 extern int drm_getmagic(struct drm_device
*dev
, void *data
,
1154 struct drm_file
*file_priv
);
1155 extern int drm_authmagic(struct drm_device
*dev
, void *data
,
1156 struct drm_file
*file_priv
);
1157 extern int drm_remove_magic(struct drm_master
*master
, drm_magic_t magic
);
1159 /* Cache management (drm_cache.c) */
1160 void drm_clflush_pages(struct page
*pages
[], unsigned long num_pages
);
1161 void drm_clflush_sg(struct sg_table
*st
);
1162 void drm_clflush_virt_range(void *addr
, unsigned long length
);
1164 /* Locking IOCTL support (drm_lock.h) */
1165 extern int drm_lock(struct drm_device
*dev
, void *data
,
1166 struct drm_file
*file_priv
);
1167 extern int drm_unlock(struct drm_device
*dev
, void *data
,
1168 struct drm_file
*file_priv
);
1169 extern int drm_lock_free(struct drm_lock_data
*lock_data
, unsigned int context
);
1170 extern void drm_idlelock_take(struct drm_lock_data
*lock_data
);
1171 extern void drm_idlelock_release(struct drm_lock_data
*lock_data
);
1174 * These are exported to drivers so that they can implement fencing using
1175 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1178 extern int drm_i_have_hw_lock(struct drm_device
*dev
, struct drm_file
*file_priv
);
1180 /* DMA support (drm_dma.h) */
1181 extern int drm_legacy_dma_setup(struct drm_device
*dev
);
1182 extern void drm_legacy_dma_takedown(struct drm_device
*dev
);
1183 extern void drm_free_buffer(struct drm_device
*dev
, struct drm_buf
* buf
);
1184 extern void drm_core_reclaim_buffers(struct drm_device
*dev
,
1185 struct drm_file
*filp
);
1187 /* IRQ support (drm_irq.h) */
1188 extern int drm_control(struct drm_device
*dev
, void *data
,
1189 struct drm_file
*file_priv
);
1190 extern int drm_irq_install(struct drm_device
*dev
, int irq
);
1191 extern int drm_irq_uninstall(struct drm_device
*dev
);
1193 extern int drm_vblank_init(struct drm_device
*dev
, int num_crtcs
);
1194 extern int drm_wait_vblank(struct drm_device
*dev
, void *data
,
1195 struct drm_file
*filp
);
1196 extern u32
drm_vblank_count(struct drm_device
*dev
, int crtc
);
1197 extern u32
drm_vblank_count_and_time(struct drm_device
*dev
, int crtc
,
1198 struct timeval
*vblanktime
);
1199 extern void drm_send_vblank_event(struct drm_device
*dev
, int crtc
,
1200 struct drm_pending_vblank_event
*e
);
1201 extern bool drm_handle_vblank(struct drm_device
*dev
, int crtc
);
1202 extern int drm_vblank_get(struct drm_device
*dev
, int crtc
);
1203 extern void drm_vblank_put(struct drm_device
*dev
, int crtc
);
1204 extern int drm_crtc_vblank_get(struct drm_crtc
*crtc
);
1205 extern void drm_crtc_vblank_put(struct drm_crtc
*crtc
);
1206 extern void drm_wait_one_vblank(struct drm_device
*dev
, int crtc
);
1207 extern void drm_crtc_wait_one_vblank(struct drm_crtc
*crtc
);
1208 extern void drm_vblank_off(struct drm_device
*dev
, int crtc
);
1209 extern void drm_vblank_on(struct drm_device
*dev
, int crtc
);
1210 extern void drm_crtc_vblank_off(struct drm_crtc
*crtc
);
1211 extern void drm_crtc_vblank_on(struct drm_crtc
*crtc
);
1212 extern void drm_vblank_cleanup(struct drm_device
*dev
);
1214 extern u32
drm_get_last_vbltimestamp(struct drm_device
*dev
, int crtc
,
1215 struct timeval
*tvblank
, unsigned flags
);
1216 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device
*dev
,
1217 int crtc
, int *max_error
,
1218 struct timeval
*vblank_time
,
1220 const struct drm_crtc
*refcrtc
,
1221 const struct drm_display_mode
*mode
);
1222 extern void drm_calc_timestamping_constants(struct drm_crtc
*crtc
,
1223 const struct drm_display_mode
*mode
);
1226 * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC
1227 * @crtc: which CRTC's vblank waitqueue to retrieve
1229 * This function returns a pointer to the vblank waitqueue for the CRTC.
1230 * Drivers can use this to implement vblank waits using wait_event() & co.
1232 static inline wait_queue_head_t
*drm_crtc_vblank_waitqueue(struct drm_crtc
*crtc
)
1234 return &crtc
->dev
->vblank
[drm_crtc_index(crtc
)].queue
;
1237 /* Modesetting support */
1238 extern void drm_vblank_pre_modeset(struct drm_device
*dev
, int crtc
);
1239 extern void drm_vblank_post_modeset(struct drm_device
*dev
, int crtc
);
1240 extern int drm_modeset_ctl(struct drm_device
*dev
, void *data
,
1241 struct drm_file
*file_priv
);
1243 /* AGP/GART support (drm_agpsupport.h) */
1245 #include <drm/drm_agpsupport.h>
1247 /* Stub support (drm_stub.h) */
1248 extern int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
1249 struct drm_file
*file_priv
);
1250 extern int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
1251 struct drm_file
*file_priv
);
1252 struct drm_master
*drm_master_create(struct drm_minor
*minor
);
1253 extern struct drm_master
*drm_master_get(struct drm_master
*master
);
1254 extern void drm_master_put(struct drm_master
**master
);
1256 extern void drm_put_dev(struct drm_device
*dev
);
1257 extern void drm_unplug_dev(struct drm_device
*dev
);
1258 extern unsigned int drm_debug
;
1260 extern unsigned int drm_vblank_offdelay
;
1261 extern unsigned int drm_timestamp_precision
;
1262 extern unsigned int drm_timestamp_monotonic
;
1264 extern struct class *drm_class
;
1266 /* Debugfs support */
1267 #if defined(CONFIG_DEBUG_FS)
1268 extern int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1269 struct dentry
*root
);
1270 extern int drm_debugfs_create_files(const struct drm_info_list
*files
,
1271 int count
, struct dentry
*root
,
1272 struct drm_minor
*minor
);
1273 extern int drm_debugfs_remove_files(const struct drm_info_list
*files
,
1274 int count
, struct drm_minor
*minor
);
1275 extern int drm_debugfs_cleanup(struct drm_minor
*minor
);
1276 extern int drm_debugfs_connector_add(struct drm_connector
*connector
);
1277 extern void drm_debugfs_connector_remove(struct drm_connector
*connector
);
1279 static inline int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1280 struct dentry
*root
)
1285 static inline int drm_debugfs_create_files(const struct drm_info_list
*files
,
1286 int count
, struct dentry
*root
,
1287 struct drm_minor
*minor
)
1292 static inline int drm_debugfs_remove_files(const struct drm_info_list
*files
,
1293 int count
, struct drm_minor
*minor
)
1298 static inline int drm_debugfs_cleanup(struct drm_minor
*minor
)
1303 static inline int drm_debugfs_connector_add(struct drm_connector
*connector
)
1307 static inline void drm_debugfs_connector_remove(struct drm_connector
*connector
)
1313 /* Info file support */
1314 extern int drm_name_info(struct seq_file
*m
, void *data
);
1315 extern int drm_vm_info(struct seq_file
*m
, void *data
);
1316 extern int drm_bufs_info(struct seq_file
*m
, void *data
);
1317 extern int drm_vblank_info(struct seq_file
*m
, void *data
);
1318 extern int drm_clients_info(struct seq_file
*m
, void* data
);
1319 extern int drm_gem_name_info(struct seq_file
*m
, void *data
);
1322 extern struct dma_buf
*drm_gem_prime_export(struct drm_device
*dev
,
1323 struct drm_gem_object
*obj
, int flags
);
1324 extern int drm_gem_prime_handle_to_fd(struct drm_device
*dev
,
1325 struct drm_file
*file_priv
, uint32_t handle
, uint32_t flags
,
1327 extern struct drm_gem_object
*drm_gem_prime_import(struct drm_device
*dev
,
1328 struct dma_buf
*dma_buf
);
1329 extern int drm_gem_prime_fd_to_handle(struct drm_device
*dev
,
1330 struct drm_file
*file_priv
, int prime_fd
, uint32_t *handle
);
1331 extern void drm_gem_dmabuf_release(struct dma_buf
*dma_buf
);
1333 extern int drm_prime_handle_to_fd_ioctl(struct drm_device
*dev
, void *data
,
1334 struct drm_file
*file_priv
);
1335 extern int drm_prime_fd_to_handle_ioctl(struct drm_device
*dev
, void *data
,
1336 struct drm_file
*file_priv
);
1338 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table
*sgt
, struct page
**pages
,
1339 dma_addr_t
*addrs
, int max_pages
);
1340 extern struct sg_table
*drm_prime_pages_to_sg(struct page
**pages
, int nr_pages
);
1341 extern void drm_prime_gem_destroy(struct drm_gem_object
*obj
, struct sg_table
*sg
);
1343 int drm_gem_dumb_destroy(struct drm_file
*file
,
1344 struct drm_device
*dev
,
1347 void drm_prime_init_file_private(struct drm_prime_file_private
*prime_fpriv
);
1348 void drm_prime_destroy_file_private(struct drm_prime_file_private
*prime_fpriv
);
1349 void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
);
1352 extern int drm_vma_info(struct seq_file
*m
, void *data
);
1355 /* Scatter Gather Support (drm_scatter.h) */
1356 extern void drm_legacy_sg_cleanup(struct drm_device
*dev
);
1357 extern int drm_sg_alloc(struct drm_device
*dev
, void *data
,
1358 struct drm_file
*file_priv
);
1359 extern int drm_sg_free(struct drm_device
*dev
, void *data
,
1360 struct drm_file
*file_priv
);
1362 /* ATI PCIGART support (ati_pcigart.h) */
1363 extern int drm_ati_pcigart_init(struct drm_device
*dev
,
1364 struct drm_ati_pcigart_info
* gart_info
);
1365 extern int drm_ati_pcigart_cleanup(struct drm_device
*dev
,
1366 struct drm_ati_pcigart_info
* gart_info
);
1368 extern drm_dma_handle_t
*drm_pci_alloc(struct drm_device
*dev
, size_t size
,
1370 extern void __drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1371 extern void drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1372 extern int drm_pci_set_unique(struct drm_device
*dev
,
1373 struct drm_master
*master
,
1374 struct drm_unique
*u
);
1376 /* Legacy Support */
1378 int drm_legacy_addmap(struct drm_device
*d
, resource_size_t offset
,
1379 unsigned int size
, enum drm_map_type type
,
1380 enum drm_map_flags flags
, struct drm_local_map
**map_p
);
1381 int drm_legacy_rmmap(struct drm_device
*d
, struct drm_local_map
*map
);
1382 int drm_legacy_rmmap_locked(struct drm_device
*d
, struct drm_local_map
*map
);
1383 struct drm_local_map
*drm_legacy_getsarea(struct drm_device
*dev
);
1385 int drm_legacy_addbufs_agp(struct drm_device
*d
, struct drm_buf_desc
*req
);
1386 int drm_legacy_addbufs_pci(struct drm_device
*d
, struct drm_buf_desc
*req
);
1388 void drm_legacy_vma_flush(struct drm_device
*d
);
1390 /* sysfs support (drm_sysfs.c) */
1391 struct drm_sysfs_class
;
1392 extern struct class *drm_sysfs_create(struct module
*owner
, char *name
);
1393 extern void drm_sysfs_destroy(void);
1394 extern struct device
*drm_sysfs_minor_alloc(struct drm_minor
*minor
);
1395 extern void drm_sysfs_hotplug_event(struct drm_device
*dev
);
1396 extern int drm_sysfs_connector_add(struct drm_connector
*connector
);
1397 extern void drm_sysfs_connector_remove(struct drm_connector
*connector
);
1399 /* Graphics Execution Manager library functions (drm_gem.c) */
1400 int drm_gem_init(struct drm_device
*dev
);
1401 void drm_gem_destroy(struct drm_device
*dev
);
1402 void drm_gem_object_release(struct drm_gem_object
*obj
);
1403 void drm_gem_object_free(struct kref
*kref
);
1404 int drm_gem_object_init(struct drm_device
*dev
,
1405 struct drm_gem_object
*obj
, size_t size
);
1406 void drm_gem_private_object_init(struct drm_device
*dev
,
1407 struct drm_gem_object
*obj
, size_t size
);
1408 void drm_gem_vm_open(struct vm_area_struct
*vma
);
1409 void drm_gem_vm_close(struct vm_area_struct
*vma
);
1410 int drm_gem_mmap_obj(struct drm_gem_object
*obj
, unsigned long obj_size
,
1411 struct vm_area_struct
*vma
);
1412 int drm_gem_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1414 #include <drm/drm_global.h>
1417 drm_gem_object_reference(struct drm_gem_object
*obj
)
1419 kref_get(&obj
->refcount
);
1423 drm_gem_object_unreference(struct drm_gem_object
*obj
)
1426 kref_put(&obj
->refcount
, drm_gem_object_free
);
1430 drm_gem_object_unreference_unlocked(struct drm_gem_object
*obj
)
1432 if (obj
&& !atomic_add_unless(&obj
->refcount
.refcount
, -1, 1)) {
1433 struct drm_device
*dev
= obj
->dev
;
1435 mutex_lock(&dev
->struct_mutex
);
1436 if (likely(atomic_dec_and_test(&obj
->refcount
.refcount
)))
1437 drm_gem_object_free(&obj
->refcount
);
1438 mutex_unlock(&dev
->struct_mutex
);
1442 int drm_gem_handle_create_tail(struct drm_file
*file_priv
,
1443 struct drm_gem_object
*obj
,
1445 int drm_gem_handle_create(struct drm_file
*file_priv
,
1446 struct drm_gem_object
*obj
,
1448 int drm_gem_handle_delete(struct drm_file
*filp
, u32 handle
);
1451 void drm_gem_free_mmap_offset(struct drm_gem_object
*obj
);
1452 int drm_gem_create_mmap_offset(struct drm_gem_object
*obj
);
1453 int drm_gem_create_mmap_offset_size(struct drm_gem_object
*obj
, size_t size
);
1455 struct page
**drm_gem_get_pages(struct drm_gem_object
*obj
);
1456 void drm_gem_put_pages(struct drm_gem_object
*obj
, struct page
**pages
,
1457 bool dirty
, bool accessed
);
1459 struct drm_gem_object
*drm_gem_object_lookup(struct drm_device
*dev
,
1460 struct drm_file
*filp
,
1462 int drm_gem_close_ioctl(struct drm_device
*dev
, void *data
,
1463 struct drm_file
*file_priv
);
1464 int drm_gem_flink_ioctl(struct drm_device
*dev
, void *data
,
1465 struct drm_file
*file_priv
);
1466 int drm_gem_open_ioctl(struct drm_device
*dev
, void *data
,
1467 struct drm_file
*file_priv
);
1468 void drm_gem_open(struct drm_device
*dev
, struct drm_file
*file_private
);
1469 void drm_gem_release(struct drm_device
*dev
, struct drm_file
*file_private
);
1471 extern void drm_core_ioremap(struct drm_local_map
*map
, struct drm_device
*dev
);
1472 extern void drm_core_ioremap_wc(struct drm_local_map
*map
, struct drm_device
*dev
);
1473 extern void drm_core_ioremapfree(struct drm_local_map
*map
, struct drm_device
*dev
);
1475 static __inline__
struct drm_local_map
*drm_core_findmap(struct drm_device
*dev
,
1478 struct drm_map_list
*_entry
;
1479 list_for_each_entry(_entry
, &dev
->maplist
, head
)
1480 if (_entry
->user_token
== token
)
1485 static __inline__
void drm_core_dropmap(struct drm_local_map
*map
)
1489 #include <drm/drm_mem_util.h>
1491 struct drm_device
*drm_dev_alloc(struct drm_driver
*driver
,
1492 struct device
*parent
);
1493 void drm_dev_ref(struct drm_device
*dev
);
1494 void drm_dev_unref(struct drm_device
*dev
);
1495 int drm_dev_register(struct drm_device
*dev
, unsigned long flags
);
1496 void drm_dev_unregister(struct drm_device
*dev
);
1497 int drm_dev_set_unique(struct drm_device
*dev
, const char *fmt
, ...);
1499 struct drm_minor
*drm_minor_acquire(unsigned int minor_id
);
1500 void drm_minor_release(struct drm_minor
*minor
);
1505 static __inline__
int drm_pci_device_is_agp(struct drm_device
*dev
)
1507 if (dev
->driver
->device_is_agp
!= NULL
) {
1508 int err
= (*dev
->driver
->device_is_agp
) (dev
);
1515 return pci_find_capability(dev
->pdev
, PCI_CAP_ID_AGP
);
1517 void drm_pci_agp_destroy(struct drm_device
*dev
);
1519 extern int drm_pci_init(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1520 extern void drm_pci_exit(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1521 extern int drm_get_pci_dev(struct pci_dev
*pdev
,
1522 const struct pci_device_id
*ent
,
1523 struct drm_driver
*driver
);
1525 #define DRM_PCIE_SPEED_25 1
1526 #define DRM_PCIE_SPEED_50 2
1527 #define DRM_PCIE_SPEED_80 4
1529 extern int drm_pcie_get_speed_cap_mask(struct drm_device
*dev
, u32
*speed_mask
);
1531 /* platform section */
1532 extern int drm_platform_init(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1534 /* returns true if currently okay to sleep */
1535 static __inline__
bool drm_can_sleep(void)
1537 if (in_atomic() || in_dbg_master() || irqs_disabled())