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)))
87 #include <drm/drm_os_linux.h>
88 #include <drm/drm_hashtab.h>
89 #include <drm/drm_mm.h>
92 * 4 debug categories are defined:
94 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...
95 * This is the category used by the DRM_DEBUG() macro.
97 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...
98 * This is the category used by the DRM_DEBUG_DRIVER() macro.
100 * KMS: used in the modesetting code.
101 * This is the category used by the DRM_DEBUG_KMS() macro.
103 * PRIME: used in the prime code.
104 * This is the category used by the DRM_DEBUG_PRIME() macro.
106 * Enabling verbose debug messages is done through the drm.debug parameter,
107 * each category being enabled by a bit.
109 * drm.debug=0x1 will enable CORE messages
110 * drm.debug=0x2 will enable DRIVER messages
111 * drm.debug=0x3 will enable CORE and DRIVER messages
113 * drm.debug=0xf will enable all messages
115 * An interesting feature is that it's possible to enable verbose logging at
116 * run-time by echoing the debug value in its sysfs node:
117 * # echo 0xf > /sys/module/drm/parameters/debug
119 #define DRM_UT_CORE 0x01
120 #define DRM_UT_DRIVER 0x02
121 #define DRM_UT_KMS 0x04
122 #define DRM_UT_PRIME 0x08
124 extern __printf(2, 3)
125 void drm_ut_debug_printk(const char *function_name
,
126 const char *format
, ...);
127 extern __printf(2, 3)
128 int drm_err(const char *func
, const char *format
, ...);
130 /***********************************************************************/
131 /** \name DRM template customization defaults */
134 /* driver capabilities and requirements mask */
135 #define DRIVER_USE_AGP 0x1
136 #define DRIVER_PCI_DMA 0x8
137 #define DRIVER_SG 0x10
138 #define DRIVER_HAVE_DMA 0x20
139 #define DRIVER_HAVE_IRQ 0x40
140 #define DRIVER_IRQ_SHARED 0x80
141 #define DRIVER_GEM 0x1000
142 #define DRIVER_MODESET 0x2000
143 #define DRIVER_PRIME 0x4000
144 #define DRIVER_RENDER 0x8000
146 /***********************************************************************/
147 /** \name Begin the DRM... */
150 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
151 also include looping detection. */
153 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
155 #define DRM_MAP_HASH_OFFSET 0x10000000
159 /***********************************************************************/
160 /** \name Macros to make printk easier */
166 * \param fmt printf() like format string.
167 * \param arg arguments
169 #define DRM_ERROR(fmt, ...) \
170 drm_err(__func__, fmt, ##__VA_ARGS__)
173 * Rate limited error output. Like DRM_ERROR() but won't flood the log.
175 * \param fmt printf() like format string.
176 * \param arg arguments
178 #define DRM_ERROR_RATELIMITED(fmt, ...) \
180 static DEFINE_RATELIMIT_STATE(_rs, \
181 DEFAULT_RATELIMIT_INTERVAL, \
182 DEFAULT_RATELIMIT_BURST); \
184 if (__ratelimit(&_rs)) \
185 drm_err(__func__, fmt, ##__VA_ARGS__); \
188 #define DRM_INFO(fmt, ...) \
189 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
191 #define DRM_INFO_ONCE(fmt, ...) \
192 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
197 * \param fmt printf() like format string.
198 * \param arg arguments
201 #define DRM_DEBUG(fmt, args...) \
203 if (unlikely(drm_debug & DRM_UT_CORE)) \
204 drm_ut_debug_printk(__func__, fmt, ##args); \
207 #define DRM_DEBUG_DRIVER(fmt, args...) \
209 if (unlikely(drm_debug & DRM_UT_DRIVER)) \
210 drm_ut_debug_printk(__func__, fmt, ##args); \
212 #define DRM_DEBUG_KMS(fmt, args...) \
214 if (unlikely(drm_debug & DRM_UT_KMS)) \
215 drm_ut_debug_printk(__func__, fmt, ##args); \
217 #define DRM_DEBUG_PRIME(fmt, args...) \
219 if (unlikely(drm_debug & DRM_UT_PRIME)) \
220 drm_ut_debug_printk(__func__, fmt, ##args); \
223 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
224 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
225 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
226 #define DRM_DEBUG(fmt, arg...) do { } while (0)
231 /***********************************************************************/
232 /** \name Internal types and structures */
235 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
238 * Test that the hardware lock is held by the caller, returning otherwise.
240 * \param dev DRM device.
241 * \param filp file pointer of the caller.
243 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
245 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
246 _file_priv->master->lock.file_priv != _file_priv) { \
247 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
248 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
249 _file_priv->master->lock.file_priv, _file_priv); \
255 * Ioctl function type.
257 * \param inode device inode.
258 * \param file_priv DRM file private pointer.
259 * \param cmd command.
260 * \param arg argument.
262 typedef int drm_ioctl_t(struct drm_device
*dev
, void *data
,
263 struct drm_file
*file_priv
);
265 typedef int drm_ioctl_compat_t(struct file
*filp
, unsigned int cmd
,
268 #define DRM_IOCTL_NR(n) _IOC_NR(n)
269 #define DRM_MAJOR 226
272 #define DRM_MASTER 0x2
273 #define DRM_ROOT_ONLY 0x4
274 #define DRM_CONTROL_ALLOW 0x8
275 #define DRM_UNLOCKED 0x10
276 #define DRM_RENDER_ALLOW 0x20
278 struct drm_ioctl_desc
{
282 unsigned int cmd_drv
;
287 * Creates a driver or general drm_ioctl_desc array entry for the given
288 * ioctl, for use by drm_ioctl().
291 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
292 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
294 struct drm_magic_entry
{
295 struct list_head head
;
296 struct drm_hash_item hash_item
;
297 struct drm_file
*priv
;
300 struct drm_vma_entry
{
301 struct list_head head
;
302 struct vm_area_struct
*vma
;
310 int idx
; /**< Index into master buflist */
311 int total
; /**< Buffer size */
312 int order
; /**< log-base-2(total) */
313 int used
; /**< Amount of buffer in use (for DMA) */
314 unsigned long offset
; /**< Byte offset (used internally) */
315 void *address
; /**< Address of buffer */
316 unsigned long bus_address
; /**< Bus address of buffer */
317 struct drm_buf
*next
; /**< Kernel-only: used for free list */
318 __volatile__
int waiting
; /**< On kernel DMA queue */
319 __volatile__
int pending
; /**< On hardware DMA queue */
320 struct drm_file
*file_priv
; /**< Private of holding file descr */
321 int context
; /**< Kernel queue for this buffer */
322 int while_locked
; /**< Dispatch this buffer while locked */
330 } list
; /**< Which list we're on */
332 int dev_priv_size
; /**< Size of buffer private storage */
333 void *dev_private
; /**< Per-buffer private storage */
336 /** bufs is one longer than it has to be */
337 struct drm_waitlist
{
338 int count
; /**< Number of possible buffers */
339 struct drm_buf
**bufs
; /**< List of pointers to buffers */
340 struct drm_buf
**rp
; /**< Read pointer */
341 struct drm_buf
**wp
; /**< Write pointer */
342 struct drm_buf
**end
; /**< End pointer */
343 spinlock_t read_lock
;
344 spinlock_t write_lock
;
347 typedef struct drm_dma_handle
{
354 * Buffer entry. There is one of this for each buffer size order.
356 struct drm_buf_entry
{
357 int buf_size
; /**< size */
358 int buf_count
; /**< number of buffers */
359 struct drm_buf
*buflist
; /**< buffer list */
362 struct drm_dma_handle
**seglist
;
364 int low_mark
; /**< Low water mark */
365 int high_mark
; /**< High water mark */
368 /* Event queued up for userspace to read */
369 struct drm_pending_event
{
370 struct drm_event
*event
;
371 struct list_head link
;
372 struct drm_file
*file_priv
;
373 pid_t pid
; /* pid of requester, no guarantee it's valid by the time
374 we deliver the event, for tracing only */
375 void (*destroy
)(struct drm_pending_event
*event
);
378 /* initial implementaton using a linked list - todo hashtab */
379 struct drm_prime_file_private
{
380 struct list_head head
;
384 /** File private data */
386 unsigned authenticated
:1;
387 /* true when the client has asked us to expose stereo 3D mode flags */
388 unsigned stereo_allowed
:1;
390 * true if client understands CRTC primary planes and cursor planes
393 unsigned universal_planes
:1;
398 struct list_head lhead
;
399 struct drm_minor
*minor
;
400 unsigned long lock_count
;
402 /** Mapping of mm object handles to object pointers. */
403 struct idr object_idr
;
404 /** Lock for synchronization of access to object_idr. */
405 spinlock_t table_lock
;
410 struct drm_master
*master
; /* master this node is currently associated with
411 N.B. not always minor->master */
413 * fbs - List of framebuffers associated with this file.
415 * Protected by fbs_lock. Note that the fbs list holds a reference on
416 * the fb object to prevent it from untimely disappearing.
418 struct list_head fbs
;
419 struct mutex fbs_lock
;
421 wait_queue_head_t event_wait
;
422 struct list_head event_list
;
425 struct drm_prime_file_private prime
;
431 struct drm_lock_data
{
432 struct drm_hw_lock
*hw_lock
; /**< Hardware lock */
433 /** Private of lock holder's file (NULL=kernel) */
434 struct drm_file
*file_priv
;
435 wait_queue_head_t lock_queue
; /**< Queue of blocked processes */
436 unsigned long lock_time
; /**< Time of last lock in jiffies */
438 uint32_t kernel_waiters
;
439 uint32_t user_waiters
;
446 struct drm_device_dma
{
448 struct drm_buf_entry bufs
[DRM_MAX_ORDER
+ 1]; /**< buffers, grouped by their size order */
449 int buf_count
; /**< total number of buffers */
450 struct drm_buf
**buflist
; /**< Vector of pointers into drm_device_dma::bufs */
452 int page_count
; /**< number of pages */
453 unsigned long *pagelist
; /**< page list */
454 unsigned long byte_count
;
456 _DRM_DMA_USE_AGP
= 0x01,
457 _DRM_DMA_USE_SG
= 0x02,
458 _DRM_DMA_USE_FB
= 0x04,
459 _DRM_DMA_USE_PCI_RO
= 0x08
465 * AGP memory entry. Stored as a doubly linked list.
468 unsigned long handle
; /**< handle */
469 struct agp_memory
*memory
;
470 unsigned long bound
; /**< address */
472 struct list_head head
;
478 * \sa drm_agp_init() and drm_device::agp.
480 struct drm_agp_head
{
481 struct agp_kern_info agp_info
; /**< AGP device information */
482 struct list_head memory
;
483 unsigned long mode
; /**< AGP mode */
484 struct agp_bridge_data
*bridge
;
485 int enabled
; /**< whether the AGP bus as been enabled */
486 int acquired
; /**< whether the AGP device has been acquired */
489 int cant_use_aperture
;
490 unsigned long page_mask
;
494 * Scatter-gather memory.
497 unsigned long handle
;
500 struct page
**pagelist
;
506 struct drm_hw_lock
*lock
;
511 * Kernel side of a mapping
513 struct drm_local_map
{
514 resource_size_t offset
; /**< Requested physical address (0 for SAREA)*/
515 unsigned long size
; /**< Requested physical size (bytes) */
516 enum drm_map_type type
; /**< Type of memory to map */
517 enum drm_map_flags flags
; /**< Flags */
518 void *handle
; /**< User-space: "Handle" to pass to mmap() */
519 /**< Kernel-space: kernel-virtual address */
520 int mtrr
; /**< MTRR slot used */
523 typedef struct drm_local_map drm_local_map_t
;
528 struct drm_map_list
{
529 struct list_head head
; /**< list head */
530 struct drm_hash_item hash
;
531 struct drm_local_map
*map
; /**< mapping */
533 struct drm_master
*master
;
536 /* location of GART table */
537 #define DRM_ATI_GART_MAIN 1
538 #define DRM_ATI_GART_FB 2
540 #define DRM_ATI_GART_PCI 1
541 #define DRM_ATI_GART_PCIE 2
542 #define DRM_ATI_GART_IGP 3
544 struct drm_ati_pcigart_info
{
545 int gart_table_location
;
549 dma_addr_t table_mask
;
550 struct drm_dma_handle
*table_handle
;
551 struct drm_local_map mapping
;
556 * This structure defines the drm_mm memory object, which will be used by the
557 * DRM for its buffer objects.
559 struct drm_gem_object
{
560 /** Reference count of this object */
561 struct kref refcount
;
564 * handle_count - gem file_priv handle count of this object
566 * Each handle also holds a reference. Note that when the handle_count
567 * drops to 0 any global names (e.g. the id in the flink namespace) will
570 * Protected by dev->object_name_lock.
572 unsigned handle_count
;
574 /** Related drm device */
575 struct drm_device
*dev
;
577 /** File representing the shmem storage */
580 /* Mapping info for this object */
581 struct drm_vma_offset_node vma_node
;
584 * Size of the object, in bytes. Immutable over the object's
590 * Global name for this object, starts at 1. 0 means unnamed.
591 * Access is covered by the object_name_lock in the related drm_device
596 * Memory domains. These monitor which caches contain read/write data
597 * related to the object. When transitioning from one set of domains
598 * to another, the driver is called to ensure that caches are suitably
599 * flushed and invalidated
601 uint32_t read_domains
;
602 uint32_t write_domain
;
605 * While validating an exec operation, the
606 * new read/write domain values are computed here.
607 * They will be transferred to the above values
608 * at the point that any cache flushing occurs
610 uint32_t pending_read_domains
;
611 uint32_t pending_write_domain
;
614 * dma_buf - dma buf associated with this GEM object
616 * Pointer to the dma-buf associated with this gem object (either
617 * through importing or exporting). We break the resulting reference
618 * loop when the last gem handle for this object is released.
620 * Protected by obj->object_name_lock
622 struct dma_buf
*dma_buf
;
625 * import_attach - dma buf attachment backing this object
627 * Any foreign dma_buf imported as a gem object has this set to the
628 * attachment point for the device. This is invariant over the lifetime
631 * The driver's ->gem_free_object callback is responsible for cleaning
632 * up the dma_buf attachment and references acquired at import time.
634 * Note that the drm gem/prime core does not depend upon drivers setting
635 * this field any more. So for drivers where this doesn't make sense
636 * (e.g. virtual devices or a displaylink behind an usb bus) they can
637 * simply leave it as NULL.
639 struct dma_buf_attachment
*import_attach
;
642 #include <drm/drm_crtc.h>
645 * struct drm_master - drm master structure
647 * @refcount: Refcount for this master object.
648 * @minor: Link back to minor char device we are master for. Immutable.
649 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
650 * @unique_len: Length of unique field. Protected by drm_global_mutex.
651 * @unique_size: Amount allocated. Protected by drm_global_mutex.
652 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex.
653 * @magicfree: List of used authentication tokens. Protected by struct_mutex.
654 * @lock: DRI lock information.
655 * @driver_priv: Pointer to driver-private information.
658 struct kref refcount
;
659 struct drm_minor
*minor
;
663 struct drm_open_hash magiclist
;
664 struct list_head magicfree
;
665 struct drm_lock_data lock
;
669 /* Size of ringbuffer for vblank timestamps. Just double-buffer
670 * in initial implementation.
672 #define DRM_VBLANKTIME_RBSIZE 2
674 /* Flags and return codes for get_vblank_timestamp() driver function. */
675 #define DRM_CALLED_FROM_VBLIRQ 1
676 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
677 #define DRM_VBLANKTIME_INVBL (1 << 1)
679 /* get_scanout_position() return flags */
680 #define DRM_SCANOUTPOS_VALID (1 << 0)
681 #define DRM_SCANOUTPOS_INVBL (1 << 1)
682 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
685 int (*set_busid
)(struct drm_device
*dev
, struct drm_master
*master
);
689 * DRM driver structure. This structure represent the common code for
690 * a family of cards. There will one drm_device for each card present
694 int (*load
) (struct drm_device
*, unsigned long flags
);
695 int (*firstopen
) (struct drm_device
*);
696 int (*open
) (struct drm_device
*, struct drm_file
*);
697 void (*preclose
) (struct drm_device
*, struct drm_file
*file_priv
);
698 void (*postclose
) (struct drm_device
*, struct drm_file
*);
699 void (*lastclose
) (struct drm_device
*);
700 int (*unload
) (struct drm_device
*);
701 int (*suspend
) (struct drm_device
*, pm_message_t state
);
702 int (*resume
) (struct drm_device
*);
703 int (*dma_ioctl
) (struct drm_device
*dev
, void *data
, struct drm_file
*file_priv
);
704 int (*dma_quiescent
) (struct drm_device
*);
705 int (*context_dtor
) (struct drm_device
*dev
, int context
);
708 * get_vblank_counter - get raw hardware vblank counter
710 * @crtc: counter to fetch
712 * Driver callback for fetching a raw hardware vblank counter for @crtc.
713 * If a device doesn't have a hardware counter, the driver can simply
714 * return the value of drm_vblank_count. The DRM core will account for
715 * missed vblank events while interrupts where disabled based on system
718 * Wraparound handling and loss of events due to modesetting is dealt
719 * with in the DRM core code.
722 * Raw vblank counter value.
724 u32 (*get_vblank_counter
) (struct drm_device
*dev
, int crtc
);
727 * enable_vblank - enable vblank interrupt events
729 * @crtc: which irq to enable
731 * Enable vblank interrupts for @crtc. If the device doesn't have
732 * a hardware vblank counter, this routine should be a no-op, since
733 * interrupts will have to stay on to keep the count accurate.
736 * Zero on success, appropriate errno if the given @crtc's vblank
737 * interrupt cannot be enabled.
739 int (*enable_vblank
) (struct drm_device
*dev
, int crtc
);
742 * disable_vblank - disable vblank interrupt events
744 * @crtc: which irq to enable
746 * Disable vblank interrupts for @crtc. If the device doesn't have
747 * a hardware vblank counter, this routine should be a no-op, since
748 * interrupts will have to stay on to keep the count accurate.
750 void (*disable_vblank
) (struct drm_device
*dev
, int crtc
);
753 * Called by \c drm_device_is_agp. Typically used to determine if a
754 * card is really attached to AGP or not.
756 * \param dev DRM device handle
759 * One of three values is returned depending on whether or not the
760 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
761 * (return of 1), or may or may not be AGP (return of 2).
763 int (*device_is_agp
) (struct drm_device
*dev
);
766 * Called by vblank timestamping code.
768 * Return the current display scanout position from a crtc, and an
769 * optional accurate ktime_get timestamp of when position was measured.
771 * \param dev DRM device.
772 * \param crtc Id of the crtc to query.
773 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
774 * \param *vpos Target location for current vertical scanout position.
775 * \param *hpos Target location for current horizontal scanout position.
776 * \param *stime Target location for timestamp taken immediately before
777 * scanout position query. Can be NULL to skip timestamp.
778 * \param *etime Target location for timestamp taken immediately after
779 * scanout position query. Can be NULL to skip timestamp.
781 * Returns vpos as a positive number while in active scanout area.
782 * Returns vpos as a negative number inside vblank, counting the number
783 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
784 * until start of active scanout / end of vblank."
786 * \return Flags, or'ed together as follows:
788 * DRM_SCANOUTPOS_VALID = Query successful.
789 * DRM_SCANOUTPOS_INVBL = Inside vblank.
790 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
791 * this flag means that returned position may be offset by a constant
792 * but unknown small number of scanlines wrt. real scanout position.
795 int (*get_scanout_position
) (struct drm_device
*dev
, int crtc
,
797 int *vpos
, int *hpos
, ktime_t
*stime
,
801 * Called by \c drm_get_last_vbltimestamp. Should return a precise
802 * timestamp when the most recent VBLANK interval ended or will end.
804 * Specifically, the timestamp in @vblank_time should correspond as
805 * closely as possible to the time when the first video scanline of
806 * the video frame after the end of VBLANK will start scanning out,
807 * the time immediately after end of the VBLANK interval. If the
808 * @crtc is currently inside VBLANK, this will be a time in the future.
809 * If the @crtc is currently scanning out a frame, this will be the
810 * past start time of the current scanout. This is meant to adhere
811 * to the OpenML OML_sync_control extension specification.
813 * \param dev dev DRM device handle.
814 * \param crtc crtc for which timestamp should be returned.
815 * \param *max_error Maximum allowable timestamp error in nanoseconds.
816 * Implementation should strive to provide timestamp
817 * with an error of at most *max_error nanoseconds.
818 * Returns true upper bound on error for timestamp.
819 * \param *vblank_time Target location for returned vblank timestamp.
820 * \param flags 0 = Defaults, no special treatment needed.
821 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
822 * irq handler. Some drivers need to apply some workarounds
823 * for gpu-specific vblank irq quirks if flag is set.
826 * Zero if timestamping isn't supported in current display mode or a
827 * negative number on failure. A positive status code on success,
828 * which describes how the vblank_time timestamp was computed.
830 int (*get_vblank_timestamp
) (struct drm_device
*dev
, int crtc
,
832 struct timeval
*vblank_time
,
835 /* these have to be filled in */
837 irqreturn_t(*irq_handler
) (int irq
, void *arg
);
838 void (*irq_preinstall
) (struct drm_device
*dev
);
839 int (*irq_postinstall
) (struct drm_device
*dev
);
840 void (*irq_uninstall
) (struct drm_device
*dev
);
842 /* Master routines */
843 int (*master_create
)(struct drm_device
*dev
, struct drm_master
*master
);
844 void (*master_destroy
)(struct drm_device
*dev
, struct drm_master
*master
);
846 * master_set is called whenever the minor master is set.
847 * master_drop is called whenever the minor master is dropped.
850 int (*master_set
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
852 void (*master_drop
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
855 int (*debugfs_init
)(struct drm_minor
*minor
);
856 void (*debugfs_cleanup
)(struct drm_minor
*minor
);
859 * Driver-specific constructor for drm_gem_objects, to set up
860 * obj->driver_private.
862 * Returns 0 on success.
864 void (*gem_free_object
) (struct drm_gem_object
*obj
);
865 int (*gem_open_object
) (struct drm_gem_object
*, struct drm_file
*);
866 void (*gem_close_object
) (struct drm_gem_object
*, struct drm_file
*);
869 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
870 int (*prime_handle_to_fd
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
871 uint32_t handle
, uint32_t flags
, int *prime_fd
);
872 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
873 int (*prime_fd_to_handle
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
874 int prime_fd
, uint32_t *handle
);
875 /* export GEM -> dmabuf */
876 struct dma_buf
* (*gem_prime_export
)(struct drm_device
*dev
,
877 struct drm_gem_object
*obj
, int flags
);
878 /* import dmabuf -> GEM */
879 struct drm_gem_object
* (*gem_prime_import
)(struct drm_device
*dev
,
880 struct dma_buf
*dma_buf
);
881 /* low-level interface used by drm_gem_prime_{import,export} */
882 int (*gem_prime_pin
)(struct drm_gem_object
*obj
);
883 void (*gem_prime_unpin
)(struct drm_gem_object
*obj
);
884 struct sg_table
*(*gem_prime_get_sg_table
)(struct drm_gem_object
*obj
);
885 struct drm_gem_object
*(*gem_prime_import_sg_table
)(
886 struct drm_device
*dev
, size_t size
,
887 struct sg_table
*sgt
);
888 void *(*gem_prime_vmap
)(struct drm_gem_object
*obj
);
889 void (*gem_prime_vunmap
)(struct drm_gem_object
*obj
, void *vaddr
);
890 int (*gem_prime_mmap
)(struct drm_gem_object
*obj
,
891 struct vm_area_struct
*vma
);
893 /* vga arb irq handler */
894 void (*vgaarb_irq
)(struct drm_device
*dev
, bool state
);
896 /* dumb alloc support */
897 int (*dumb_create
)(struct drm_file
*file_priv
,
898 struct drm_device
*dev
,
899 struct drm_mode_create_dumb
*args
);
900 int (*dumb_map_offset
)(struct drm_file
*file_priv
,
901 struct drm_device
*dev
, uint32_t handle
,
903 int (*dumb_destroy
)(struct drm_file
*file_priv
,
904 struct drm_device
*dev
,
907 /* Driver private ops for this object */
908 const struct vm_operations_struct
*gem_vm_ops
;
919 const struct drm_ioctl_desc
*ioctls
;
921 const struct file_operations
*fops
;
924 /* List of devices hanging off this driver with stealth attach. */
925 struct list_head legacy_dev_list
;
928 enum drm_minor_type
{
936 * Info file list entry. This structure represents a debugfs or proc file to
937 * be created by the drm core
939 struct drm_info_list
{
940 const char *name
; /** file name */
941 int (*show
)(struct seq_file
*, void*); /** show callback */
942 u32 driver_features
; /**< Required driver features for this entry */
947 * debugfs node structure. This structure represents a debugfs file.
949 struct drm_info_node
{
950 struct list_head list
;
951 struct drm_minor
*minor
;
952 const struct drm_info_list
*info_ent
;
957 * DRM minor structure. This structure represents a drm minor number.
960 int index
; /**< Minor device number */
961 int type
; /**< Control or render */
962 struct device
*kdev
; /**< Linux device */
963 struct drm_device
*dev
;
965 struct dentry
*debugfs_root
;
967 struct list_head debugfs_list
;
968 struct mutex debugfs_lock
; /* Protects debugfs_list. */
970 /* currently active master for this node. Protected by master_mutex */
971 struct drm_master
*master
;
972 struct drm_mode_group mode_group
;
976 struct drm_pending_vblank_event
{
977 struct drm_pending_event base
;
979 struct drm_event_vblank event
;
982 struct drm_vblank_crtc
{
983 struct drm_device
*dev
; /* pointer to the drm_device */
984 wait_queue_head_t queue
; /**< VBLANK wait queue */
985 struct timeval time
[DRM_VBLANKTIME_RBSIZE
]; /**< timestamp of current count */
986 struct timer_list disable_timer
; /* delayed disable timer */
987 atomic_t count
; /**< number of VBLANK interrupts */
988 atomic_t refcount
; /* number of users of vblank interruptsper crtc */
989 u32 last
; /* protected by dev->vbl_lock, used */
990 /* for wraparound handling */
991 u32 last_wait
; /* Last vblank seqno waited per CRTC */
992 unsigned int inmodeset
; /* Display driver is setting mode */
993 int crtc
; /* crtc index */
994 bool enabled
; /* so we don't call enable more than
999 * DRM device structure. This structure represent a complete card that
1000 * may contain multiple heads.
1003 struct list_head legacy_dev_list
;/**< list of devices per driver for stealth attach cleanup */
1004 int if_version
; /**< Highest interface version set */
1006 /** \name Lifetime Management */
1008 struct kref ref
; /**< Object ref-count */
1009 struct device
*dev
; /**< Device structure of bus-device */
1010 struct drm_driver
*driver
; /**< DRM driver managing the device */
1011 void *dev_private
; /**< DRM driver private data */
1012 struct drm_minor
*control
; /**< Control node */
1013 struct drm_minor
*primary
; /**< Primary node */
1014 struct drm_minor
*render
; /**< Render node */
1015 atomic_t unplugged
; /**< Flag whether dev is dead */
1016 struct inode
*anon_inode
; /**< inode for private address-space */
1017 char *unique
; /**< unique name of the device */
1022 struct mutex struct_mutex
; /**< For others */
1023 struct mutex master_mutex
; /**< For drm_minor::master */
1026 /** \name Usage Counters */
1028 int open_count
; /**< Outstanding files open, protected by drm_global_mutex. */
1029 spinlock_t buf_lock
; /**< For drm_device::buf_use and a few other things. */
1030 int buf_use
; /**< Buffers in use -- cannot alloc */
1031 atomic_t buf_alloc
; /**< Buffer allocation in progress */
1034 struct list_head filelist
;
1036 /** \name Memory management */
1038 struct list_head maplist
; /**< Linked list of regions */
1039 struct drm_open_hash map_hash
; /**< User token hash table for maps */
1041 /** \name Context handle management */
1043 struct list_head ctxlist
; /**< Linked list of context handles */
1044 struct mutex ctxlist_mutex
; /**< For ctxlist */
1048 struct list_head vmalist
; /**< List of vmas (for debugging) */
1052 /** \name DMA support */
1054 struct drm_device_dma
*dma
; /**< Optional pointer for DMA support */
1057 /** \name Context support */
1059 bool irq_enabled
; /**< True if irq handler is enabled */
1062 __volatile__
long context_flag
; /**< Context swapping flag */
1063 int last_context
; /**< Last current context */
1066 /** \name VBLANK IRQ support */
1070 * At load time, disabling the vblank interrupt won't be allowed since
1071 * old clients may not call the modeset ioctl and therefore misbehave.
1072 * Once the modeset ioctl *has* been called though, we can safely
1073 * disable them when unused.
1075 bool vblank_disable_allowed
;
1077 /* array of size num_crtcs */
1078 struct drm_vblank_crtc
*vblank
;
1080 spinlock_t vblank_time_lock
; /**< Protects vblank count and time updates during vblank enable/disable */
1081 spinlock_t vbl_lock
;
1083 u32 max_vblank_count
; /**< size of vblank counter register */
1088 struct list_head vblank_event_list
;
1089 spinlock_t event_lock
;
1093 struct drm_agp_head
*agp
; /**< AGP data */
1095 struct pci_dev
*pdev
; /**< PCI device structure */
1097 struct pci_controller
*hose
;
1100 struct platform_device
*platformdev
; /**< Platform device struture */
1101 struct usb_device
*usbdev
;
1103 struct drm_sg_mem
*sg
; /**< Scatter gather memory */
1104 unsigned int num_crtcs
; /**< Number of CRTCs on this device */
1105 struct drm_sigdata sigdata
; /**< For block_all_signals */
1108 struct drm_local_map
*agp_buffer_map
;
1109 unsigned int agp_buffer_token
;
1111 struct drm_mode_config mode_config
; /**< Current mode config */
1113 /** \name GEM information */
1115 struct mutex object_name_lock
;
1116 struct idr object_name_idr
;
1117 struct drm_vma_offset_manager
*vma_offset_manager
;
1119 int switch_power_state
;
1122 #define DRM_SWITCH_POWER_ON 0
1123 #define DRM_SWITCH_POWER_OFF 1
1124 #define DRM_SWITCH_POWER_CHANGING 2
1125 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3
1127 static __inline__
int drm_core_check_feature(struct drm_device
*dev
,
1130 return ((dev
->driver
->driver_features
& feature
) ? 1 : 0);
1133 static inline void drm_device_set_unplugged(struct drm_device
*dev
)
1136 atomic_set(&dev
->unplugged
, 1);
1139 static inline int drm_device_is_unplugged(struct drm_device
*dev
)
1141 int ret
= atomic_read(&dev
->unplugged
);
1146 static inline bool drm_is_render_client(const struct drm_file
*file_priv
)
1148 return file_priv
->minor
->type
== DRM_MINOR_RENDER
;
1151 static inline bool drm_is_control_client(const struct drm_file
*file_priv
)
1153 return file_priv
->minor
->type
== DRM_MINOR_CONTROL
;
1156 static inline bool drm_is_primary_client(const struct drm_file
*file_priv
)
1158 return file_priv
->minor
->type
== DRM_MINOR_LEGACY
;
1162 * drm_is_master() - Check whether a DRM open-file is DRM-Master
1163 * @file: DRM open-file context
1165 * This checks whether a DRM open-file context is owner of the master context
1166 * attached to it. If a file owns a master context, it's called DRM-Master.
1167 * Per DRM device, only one such file can be DRM-Master at a time.
1169 * Returns: True if the file is DRM-Master, otherwise false.
1171 static inline bool drm_is_master(const struct drm_file
*file
)
1173 return file
->master
&& file
->master
== file
->minor
->master
;
1176 /******************************************************************/
1177 /** \name Internal function definitions */
1180 /* Driver support (drm_drv.h) */
1181 extern long drm_ioctl(struct file
*filp
,
1182 unsigned int cmd
, unsigned long arg
);
1183 extern long drm_compat_ioctl(struct file
*filp
,
1184 unsigned int cmd
, unsigned long arg
);
1185 extern int drm_lastclose(struct drm_device
*dev
);
1186 extern bool drm_ioctl_flags(unsigned int nr
, unsigned int *flags
);
1188 /* Device support (drm_fops.h) */
1189 extern struct mutex drm_global_mutex
;
1190 extern int drm_open(struct inode
*inode
, struct file
*filp
);
1191 extern ssize_t
drm_read(struct file
*filp
, char __user
*buffer
,
1192 size_t count
, loff_t
*offset
);
1193 extern int drm_release(struct inode
*inode
, struct file
*filp
);
1195 /* Mapping support (drm_vm.h) */
1196 extern int drm_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1197 extern int drm_mmap_locked(struct file
*filp
, struct vm_area_struct
*vma
);
1198 extern void drm_vm_open_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1199 extern void drm_vm_close_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1200 extern unsigned int drm_poll(struct file
*filp
, struct poll_table_struct
*wait
);
1202 /* Memory management support (drm_memory.h) */
1203 #include <drm/drm_memory.h>
1206 /* Misc. IOCTL support (drm_ioctl.h) */
1207 extern int drm_irq_by_busid(struct drm_device
*dev
, void *data
,
1208 struct drm_file
*file_priv
);
1209 extern int drm_getunique(struct drm_device
*dev
, void *data
,
1210 struct drm_file
*file_priv
);
1211 extern int drm_setunique(struct drm_device
*dev
, void *data
,
1212 struct drm_file
*file_priv
);
1213 extern int drm_getmap(struct drm_device
*dev
, void *data
,
1214 struct drm_file
*file_priv
);
1215 extern int drm_getclient(struct drm_device
*dev
, void *data
,
1216 struct drm_file
*file_priv
);
1217 extern int drm_getstats(struct drm_device
*dev
, void *data
,
1218 struct drm_file
*file_priv
);
1219 extern int drm_getcap(struct drm_device
*dev
, void *data
,
1220 struct drm_file
*file_priv
);
1221 extern int drm_setclientcap(struct drm_device
*dev
, void *data
,
1222 struct drm_file
*file_priv
);
1223 extern int drm_setversion(struct drm_device
*dev
, void *data
,
1224 struct drm_file
*file_priv
);
1225 extern int drm_noop(struct drm_device
*dev
, void *data
,
1226 struct drm_file
*file_priv
);
1228 /* Authentication IOCTL support (drm_auth.h) */
1229 extern int drm_getmagic(struct drm_device
*dev
, void *data
,
1230 struct drm_file
*file_priv
);
1231 extern int drm_authmagic(struct drm_device
*dev
, void *data
,
1232 struct drm_file
*file_priv
);
1233 extern int drm_remove_magic(struct drm_master
*master
, drm_magic_t magic
);
1235 /* Cache management (drm_cache.c) */
1236 void drm_clflush_pages(struct page
*pages
[], unsigned long num_pages
);
1237 void drm_clflush_sg(struct sg_table
*st
);
1238 void drm_clflush_virt_range(void *addr
, unsigned long length
);
1240 /* Locking IOCTL support (drm_lock.h) */
1241 extern int drm_lock(struct drm_device
*dev
, void *data
,
1242 struct drm_file
*file_priv
);
1243 extern int drm_unlock(struct drm_device
*dev
, void *data
,
1244 struct drm_file
*file_priv
);
1245 extern int drm_lock_free(struct drm_lock_data
*lock_data
, unsigned int context
);
1246 extern void drm_idlelock_take(struct drm_lock_data
*lock_data
);
1247 extern void drm_idlelock_release(struct drm_lock_data
*lock_data
);
1250 * These are exported to drivers so that they can implement fencing using
1251 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1254 extern int drm_i_have_hw_lock(struct drm_device
*dev
, struct drm_file
*file_priv
);
1256 /* Buffer management support (drm_bufs.h) */
1257 extern int drm_addbufs_agp(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1258 extern int drm_addbufs_pci(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1259 extern int drm_addmap(struct drm_device
*dev
, resource_size_t offset
,
1260 unsigned int size
, enum drm_map_type type
,
1261 enum drm_map_flags flags
, struct drm_local_map
**map_ptr
);
1262 extern int drm_addmap_ioctl(struct drm_device
*dev
, void *data
,
1263 struct drm_file
*file_priv
);
1264 extern int drm_rmmap(struct drm_device
*dev
, struct drm_local_map
*map
);
1265 extern int drm_rmmap_locked(struct drm_device
*dev
, struct drm_local_map
*map
);
1266 extern int drm_rmmap_ioctl(struct drm_device
*dev
, void *data
,
1267 struct drm_file
*file_priv
);
1268 extern int drm_addbufs(struct drm_device
*dev
, void *data
,
1269 struct drm_file
*file_priv
);
1270 extern int drm_infobufs(struct drm_device
*dev
, void *data
,
1271 struct drm_file
*file_priv
);
1272 extern int drm_markbufs(struct drm_device
*dev
, void *data
,
1273 struct drm_file
*file_priv
);
1274 extern int drm_freebufs(struct drm_device
*dev
, void *data
,
1275 struct drm_file
*file_priv
);
1276 extern int drm_mapbufs(struct drm_device
*dev
, void *data
,
1277 struct drm_file
*file_priv
);
1278 extern int drm_dma_ioctl(struct drm_device
*dev
, void *data
,
1279 struct drm_file
*file_priv
);
1281 /* DMA support (drm_dma.h) */
1282 extern int drm_legacy_dma_setup(struct drm_device
*dev
);
1283 extern void drm_legacy_dma_takedown(struct drm_device
*dev
);
1284 extern void drm_free_buffer(struct drm_device
*dev
, struct drm_buf
* buf
);
1285 extern void drm_core_reclaim_buffers(struct drm_device
*dev
,
1286 struct drm_file
*filp
);
1288 /* IRQ support (drm_irq.h) */
1289 extern int drm_control(struct drm_device
*dev
, void *data
,
1290 struct drm_file
*file_priv
);
1291 extern int drm_irq_install(struct drm_device
*dev
, int irq
);
1292 extern int drm_irq_uninstall(struct drm_device
*dev
);
1294 extern int drm_vblank_init(struct drm_device
*dev
, int num_crtcs
);
1295 extern int drm_wait_vblank(struct drm_device
*dev
, void *data
,
1296 struct drm_file
*filp
);
1297 extern u32
drm_vblank_count(struct drm_device
*dev
, int crtc
);
1298 extern u32
drm_vblank_count_and_time(struct drm_device
*dev
, int crtc
,
1299 struct timeval
*vblanktime
);
1300 extern void drm_send_vblank_event(struct drm_device
*dev
, int crtc
,
1301 struct drm_pending_vblank_event
*e
);
1302 extern bool drm_handle_vblank(struct drm_device
*dev
, int crtc
);
1303 extern int drm_vblank_get(struct drm_device
*dev
, int crtc
);
1304 extern void drm_vblank_put(struct drm_device
*dev
, int crtc
);
1305 extern int drm_crtc_vblank_get(struct drm_crtc
*crtc
);
1306 extern void drm_crtc_vblank_put(struct drm_crtc
*crtc
);
1307 extern void drm_vblank_off(struct drm_device
*dev
, int crtc
);
1308 extern void drm_vblank_on(struct drm_device
*dev
, int crtc
);
1309 extern void drm_crtc_vblank_off(struct drm_crtc
*crtc
);
1310 extern void drm_crtc_vblank_on(struct drm_crtc
*crtc
);
1311 extern void drm_vblank_cleanup(struct drm_device
*dev
);
1313 extern u32
drm_get_last_vbltimestamp(struct drm_device
*dev
, int crtc
,
1314 struct timeval
*tvblank
, unsigned flags
);
1315 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device
*dev
,
1316 int crtc
, int *max_error
,
1317 struct timeval
*vblank_time
,
1319 const struct drm_crtc
*refcrtc
,
1320 const struct drm_display_mode
*mode
);
1321 extern void drm_calc_timestamping_constants(struct drm_crtc
*crtc
,
1322 const struct drm_display_mode
*mode
);
1325 /* Modesetting support */
1326 extern void drm_vblank_pre_modeset(struct drm_device
*dev
, int crtc
);
1327 extern void drm_vblank_post_modeset(struct drm_device
*dev
, int crtc
);
1328 extern int drm_modeset_ctl(struct drm_device
*dev
, void *data
,
1329 struct drm_file
*file_priv
);
1331 /* AGP/GART support (drm_agpsupport.h) */
1333 #include <drm/drm_agpsupport.h>
1335 /* Stub support (drm_stub.h) */
1336 extern int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
1337 struct drm_file
*file_priv
);
1338 extern int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
1339 struct drm_file
*file_priv
);
1340 struct drm_master
*drm_master_create(struct drm_minor
*minor
);
1341 extern struct drm_master
*drm_master_get(struct drm_master
*master
);
1342 extern void drm_master_put(struct drm_master
**master
);
1344 extern void drm_put_dev(struct drm_device
*dev
);
1345 extern void drm_unplug_dev(struct drm_device
*dev
);
1346 extern unsigned int drm_debug
;
1348 extern unsigned int drm_vblank_offdelay
;
1349 extern unsigned int drm_timestamp_precision
;
1350 extern unsigned int drm_timestamp_monotonic
;
1352 extern struct class *drm_class
;
1354 extern struct drm_local_map
*drm_getsarea(struct drm_device
*dev
);
1356 /* Debugfs support */
1357 #if defined(CONFIG_DEBUG_FS)
1358 extern int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1359 struct dentry
*root
);
1360 extern int drm_debugfs_create_files(const struct drm_info_list
*files
,
1361 int count
, struct dentry
*root
,
1362 struct drm_minor
*minor
);
1363 extern int drm_debugfs_remove_files(const struct drm_info_list
*files
,
1364 int count
, struct drm_minor
*minor
);
1365 extern int drm_debugfs_cleanup(struct drm_minor
*minor
);
1366 extern int drm_debugfs_connector_add(struct drm_connector
*connector
);
1367 extern void drm_debugfs_connector_remove(struct drm_connector
*connector
);
1369 static inline int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1370 struct dentry
*root
)
1375 static inline int drm_debugfs_create_files(const struct drm_info_list
*files
,
1376 int count
, struct dentry
*root
,
1377 struct drm_minor
*minor
)
1382 static inline int drm_debugfs_remove_files(const struct drm_info_list
*files
,
1383 int count
, struct drm_minor
*minor
)
1388 static inline int drm_debugfs_cleanup(struct drm_minor
*minor
)
1393 static inline int drm_debugfs_connector_add(struct drm_connector
*connector
)
1397 static inline void drm_debugfs_connector_remove(struct drm_connector
*connector
)
1403 /* Info file support */
1404 extern int drm_name_info(struct seq_file
*m
, void *data
);
1405 extern int drm_vm_info(struct seq_file
*m
, void *data
);
1406 extern int drm_bufs_info(struct seq_file
*m
, void *data
);
1407 extern int drm_vblank_info(struct seq_file
*m
, void *data
);
1408 extern int drm_clients_info(struct seq_file
*m
, void* data
);
1409 extern int drm_gem_name_info(struct seq_file
*m
, void *data
);
1412 extern struct dma_buf
*drm_gem_prime_export(struct drm_device
*dev
,
1413 struct drm_gem_object
*obj
, int flags
);
1414 extern int drm_gem_prime_handle_to_fd(struct drm_device
*dev
,
1415 struct drm_file
*file_priv
, uint32_t handle
, uint32_t flags
,
1417 extern struct drm_gem_object
*drm_gem_prime_import(struct drm_device
*dev
,
1418 struct dma_buf
*dma_buf
);
1419 extern int drm_gem_prime_fd_to_handle(struct drm_device
*dev
,
1420 struct drm_file
*file_priv
, int prime_fd
, uint32_t *handle
);
1421 extern void drm_gem_dmabuf_release(struct dma_buf
*dma_buf
);
1423 extern int drm_prime_handle_to_fd_ioctl(struct drm_device
*dev
, void *data
,
1424 struct drm_file
*file_priv
);
1425 extern int drm_prime_fd_to_handle_ioctl(struct drm_device
*dev
, void *data
,
1426 struct drm_file
*file_priv
);
1428 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table
*sgt
, struct page
**pages
,
1429 dma_addr_t
*addrs
, int max_pages
);
1430 extern struct sg_table
*drm_prime_pages_to_sg(struct page
**pages
, int nr_pages
);
1431 extern void drm_prime_gem_destroy(struct drm_gem_object
*obj
, struct sg_table
*sg
);
1433 int drm_gem_dumb_destroy(struct drm_file
*file
,
1434 struct drm_device
*dev
,
1437 void drm_prime_init_file_private(struct drm_prime_file_private
*prime_fpriv
);
1438 void drm_prime_destroy_file_private(struct drm_prime_file_private
*prime_fpriv
);
1439 void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
);
1442 extern int drm_vma_info(struct seq_file
*m
, void *data
);
1445 /* Scatter Gather Support (drm_scatter.h) */
1446 extern void drm_legacy_sg_cleanup(struct drm_device
*dev
);
1447 extern int drm_sg_alloc(struct drm_device
*dev
, void *data
,
1448 struct drm_file
*file_priv
);
1449 extern int drm_sg_free(struct drm_device
*dev
, void *data
,
1450 struct drm_file
*file_priv
);
1452 /* ATI PCIGART support (ati_pcigart.h) */
1453 extern int drm_ati_pcigart_init(struct drm_device
*dev
,
1454 struct drm_ati_pcigart_info
* gart_info
);
1455 extern int drm_ati_pcigart_cleanup(struct drm_device
*dev
,
1456 struct drm_ati_pcigart_info
* gart_info
);
1458 extern drm_dma_handle_t
*drm_pci_alloc(struct drm_device
*dev
, size_t size
,
1460 extern void __drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1461 extern void drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1462 extern int drm_pci_set_unique(struct drm_device
*dev
,
1463 struct drm_master
*master
,
1464 struct drm_unique
*u
);
1466 /* sysfs support (drm_sysfs.c) */
1467 struct drm_sysfs_class
;
1468 extern struct class *drm_sysfs_create(struct module
*owner
, char *name
);
1469 extern void drm_sysfs_destroy(void);
1470 extern struct device
*drm_sysfs_minor_alloc(struct drm_minor
*minor
);
1471 extern void drm_sysfs_hotplug_event(struct drm_device
*dev
);
1472 extern int drm_sysfs_connector_add(struct drm_connector
*connector
);
1473 extern void drm_sysfs_connector_remove(struct drm_connector
*connector
);
1475 /* Graphics Execution Manager library functions (drm_gem.c) */
1476 int drm_gem_init(struct drm_device
*dev
);
1477 void drm_gem_destroy(struct drm_device
*dev
);
1478 void drm_gem_object_release(struct drm_gem_object
*obj
);
1479 void drm_gem_object_free(struct kref
*kref
);
1480 int drm_gem_object_init(struct drm_device
*dev
,
1481 struct drm_gem_object
*obj
, size_t size
);
1482 void drm_gem_private_object_init(struct drm_device
*dev
,
1483 struct drm_gem_object
*obj
, size_t size
);
1484 void drm_gem_vm_open(struct vm_area_struct
*vma
);
1485 void drm_gem_vm_close(struct vm_area_struct
*vma
);
1486 int drm_gem_mmap_obj(struct drm_gem_object
*obj
, unsigned long obj_size
,
1487 struct vm_area_struct
*vma
);
1488 int drm_gem_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1490 #include <drm/drm_global.h>
1493 drm_gem_object_reference(struct drm_gem_object
*obj
)
1495 kref_get(&obj
->refcount
);
1499 drm_gem_object_unreference(struct drm_gem_object
*obj
)
1502 kref_put(&obj
->refcount
, drm_gem_object_free
);
1506 drm_gem_object_unreference_unlocked(struct drm_gem_object
*obj
)
1508 if (obj
&& !atomic_add_unless(&obj
->refcount
.refcount
, -1, 1)) {
1509 struct drm_device
*dev
= obj
->dev
;
1511 mutex_lock(&dev
->struct_mutex
);
1512 if (likely(atomic_dec_and_test(&obj
->refcount
.refcount
)))
1513 drm_gem_object_free(&obj
->refcount
);
1514 mutex_unlock(&dev
->struct_mutex
);
1518 int drm_gem_handle_create_tail(struct drm_file
*file_priv
,
1519 struct drm_gem_object
*obj
,
1521 int drm_gem_handle_create(struct drm_file
*file_priv
,
1522 struct drm_gem_object
*obj
,
1524 int drm_gem_handle_delete(struct drm_file
*filp
, u32 handle
);
1527 void drm_gem_free_mmap_offset(struct drm_gem_object
*obj
);
1528 int drm_gem_create_mmap_offset(struct drm_gem_object
*obj
);
1529 int drm_gem_create_mmap_offset_size(struct drm_gem_object
*obj
, size_t size
);
1531 struct page
**drm_gem_get_pages(struct drm_gem_object
*obj
);
1532 void drm_gem_put_pages(struct drm_gem_object
*obj
, struct page
**pages
,
1533 bool dirty
, bool accessed
);
1535 struct drm_gem_object
*drm_gem_object_lookup(struct drm_device
*dev
,
1536 struct drm_file
*filp
,
1538 int drm_gem_close_ioctl(struct drm_device
*dev
, void *data
,
1539 struct drm_file
*file_priv
);
1540 int drm_gem_flink_ioctl(struct drm_device
*dev
, void *data
,
1541 struct drm_file
*file_priv
);
1542 int drm_gem_open_ioctl(struct drm_device
*dev
, void *data
,
1543 struct drm_file
*file_priv
);
1544 void drm_gem_open(struct drm_device
*dev
, struct drm_file
*file_private
);
1545 void drm_gem_release(struct drm_device
*dev
, struct drm_file
*file_private
);
1547 extern void drm_core_ioremap(struct drm_local_map
*map
, struct drm_device
*dev
);
1548 extern void drm_core_ioremap_wc(struct drm_local_map
*map
, struct drm_device
*dev
);
1549 extern void drm_core_ioremapfree(struct drm_local_map
*map
, struct drm_device
*dev
);
1551 static __inline__
struct drm_local_map
*drm_core_findmap(struct drm_device
*dev
,
1554 struct drm_map_list
*_entry
;
1555 list_for_each_entry(_entry
, &dev
->maplist
, head
)
1556 if (_entry
->user_token
== token
)
1561 static __inline__
void drm_core_dropmap(struct drm_local_map
*map
)
1565 #include <drm/drm_mem_util.h>
1567 struct drm_device
*drm_dev_alloc(struct drm_driver
*driver
,
1568 struct device
*parent
);
1569 void drm_dev_ref(struct drm_device
*dev
);
1570 void drm_dev_unref(struct drm_device
*dev
);
1571 int drm_dev_register(struct drm_device
*dev
, unsigned long flags
);
1572 void drm_dev_unregister(struct drm_device
*dev
);
1573 int drm_dev_set_unique(struct drm_device
*dev
, const char *fmt
, ...);
1575 struct drm_minor
*drm_minor_acquire(unsigned int minor_id
);
1576 void drm_minor_release(struct drm_minor
*minor
);
1581 static __inline__
int drm_pci_device_is_agp(struct drm_device
*dev
)
1583 if (dev
->driver
->device_is_agp
!= NULL
) {
1584 int err
= (*dev
->driver
->device_is_agp
) (dev
);
1591 return pci_find_capability(dev
->pdev
, PCI_CAP_ID_AGP
);
1593 void drm_pci_agp_destroy(struct drm_device
*dev
);
1595 extern int drm_pci_init(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1596 extern void drm_pci_exit(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1597 extern int drm_get_pci_dev(struct pci_dev
*pdev
,
1598 const struct pci_device_id
*ent
,
1599 struct drm_driver
*driver
);
1601 #define DRM_PCIE_SPEED_25 1
1602 #define DRM_PCIE_SPEED_50 2
1603 #define DRM_PCIE_SPEED_80 4
1605 extern int drm_pcie_get_speed_cap_mask(struct drm_device
*dev
, u32
*speed_mask
);
1607 /* platform section */
1608 extern int drm_platform_init(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1610 /* returns true if currently okay to sleep */
1611 static __inline__
bool drm_can_sleep(void)
1613 if (in_atomic() || in_dbg_master() || irqs_disabled())
1618 #endif /* __KERNEL__ */