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/miscdevice.h>
48 #include <linux/init.h>
49 #include <linux/file.h>
50 #include <linux/platform_device.h>
51 #include <linux/pci.h>
52 #include <linux/jiffies.h>
53 #include <linux/dma-mapping.h>
55 #include <linux/cdev.h>
56 #include <linux/mutex.h>
58 #include <linux/slab.h>
59 #include <linux/ratelimit.h>
60 #if defined(__alpha__) || defined(__powerpc__)
61 #include <asm/pgtable.h> /* For pte_wrprotect */
64 #include <asm/uaccess.h>
65 #include <linux/types.h>
66 #include <linux/agp_backend.h>
67 #include <linux/workqueue.h>
68 #include <linux/poll.h>
69 #include <asm/pgalloc.h>
71 #include <drm/drm_sarea.h>
72 #include <drm/drm_vma_manager.h>
74 #include <linux/idr.h>
76 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
86 #include <drm/drm_os_linux.h>
87 #include <drm/drm_hashtab.h>
88 #include <drm/drm_mm.h>
90 #define DRM_UT_CORE 0x01
91 #define DRM_UT_DRIVER 0x02
92 #define DRM_UT_KMS 0x04
93 #define DRM_UT_PRIME 0x08
95 * Three debug levels are defined.
96 * drm_core, drm_driver, drm_kms
97 * drm_core level can be used in the generic drm code. For example:
98 * drm_ioctl, drm_mm, drm_memory
99 * The macro definition of DRM_DEBUG is used.
100 * DRM_DEBUG(fmt, args...)
101 * The debug info by using the DRM_DEBUG can be obtained by adding
102 * the boot option of "drm.debug=1".
104 * drm_driver level can be used in the specific drm driver. It is used
105 * to add the debug info related with the drm driver. For example:
106 * i915_drv, i915_dma, i915_gem, radeon_drv,
107 * The macro definition of DRM_DEBUG_DRIVER can be used.
108 * DRM_DEBUG_DRIVER(fmt, args...)
109 * The debug info by using the DRM_DEBUG_DRIVER can be obtained by
110 * adding the boot option of "drm.debug=0x02"
112 * drm_kms level can be used in the KMS code related with specific drm driver.
113 * It is used to add the debug info related with KMS mode. For example:
114 * the connector/crtc ,
115 * The macro definition of DRM_DEBUG_KMS can be used.
116 * DRM_DEBUG_KMS(fmt, args...)
117 * The debug info by using the DRM_DEBUG_KMS can be obtained by
118 * adding the boot option of "drm.debug=0x04"
120 * If we add the boot option of "drm.debug=0x06", we can get the debug info by
121 * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
122 * If we add the boot option of "drm.debug=0x05", we can get the debug info by
123 * using the DRM_DEBUG_KMS and DRM_DEBUG.
126 extern __printf(4, 5)
127 void drm_ut_debug_printk(unsigned int request_level
,
129 const char *function_name
,
130 const char *format
, ...);
131 extern __printf(2, 3)
132 int drm_err(const char *func
, const char *format
, ...);
134 /***********************************************************************/
135 /** \name DRM template customization defaults */
138 /* driver capabilities and requirements mask */
139 #define DRIVER_USE_AGP 0x1
140 #define DRIVER_PCI_DMA 0x8
141 #define DRIVER_SG 0x10
142 #define DRIVER_HAVE_DMA 0x20
143 #define DRIVER_HAVE_IRQ 0x40
144 #define DRIVER_IRQ_SHARED 0x80
145 #define DRIVER_GEM 0x1000
146 #define DRIVER_MODESET 0x2000
147 #define DRIVER_PRIME 0x4000
148 #define DRIVER_RENDER 0x8000
150 #define DRIVER_BUS_PCI 0x1
151 #define DRIVER_BUS_PLATFORM 0x2
152 #define DRIVER_BUS_USB 0x3
153 #define DRIVER_BUS_HOST1X 0x4
155 /***********************************************************************/
156 /** \name Begin the DRM... */
159 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
160 also include looping detection. */
162 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
163 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
164 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
166 #define DRM_MAP_HASH_OFFSET 0x10000000
170 /***********************************************************************/
171 /** \name Macros to make printk easier */
177 * \param fmt printf() like format string.
178 * \param arg arguments
180 #define DRM_ERROR(fmt, ...) \
181 drm_err(__func__, fmt, ##__VA_ARGS__)
184 * Rate limited error output. Like DRM_ERROR() but won't flood the log.
186 * \param fmt printf() like format string.
187 * \param arg arguments
189 #define DRM_ERROR_RATELIMITED(fmt, ...) \
191 static DEFINE_RATELIMIT_STATE(_rs, \
192 DEFAULT_RATELIMIT_INTERVAL, \
193 DEFAULT_RATELIMIT_BURST); \
195 if (__ratelimit(&_rs)) \
196 drm_err(__func__, fmt, ##__VA_ARGS__); \
199 #define DRM_INFO(fmt, ...) \
200 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
202 #define DRM_INFO_ONCE(fmt, ...) \
203 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
208 * \param fmt printf() like format string.
209 * \param arg arguments
212 #define DRM_DEBUG(fmt, args...) \
214 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
215 __func__, fmt, ##args); \
218 #define DRM_DEBUG_DRIVER(fmt, args...) \
220 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
221 __func__, fmt, ##args); \
223 #define DRM_DEBUG_KMS(fmt, args...) \
225 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
226 __func__, fmt, ##args); \
228 #define DRM_DEBUG_PRIME(fmt, args...) \
230 drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME, \
231 __func__, fmt, ##args); \
233 #define DRM_LOG(fmt, args...) \
235 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
236 NULL, fmt, ##args); \
238 #define DRM_LOG_KMS(fmt, args...) \
240 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
241 NULL, fmt, ##args); \
243 #define DRM_LOG_MODE(fmt, args...) \
245 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
246 NULL, fmt, ##args); \
248 #define DRM_LOG_DRIVER(fmt, args...) \
250 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
251 NULL, fmt, ##args); \
254 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
255 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
256 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
257 #define DRM_DEBUG(fmt, arg...) do { } while (0)
258 #define DRM_LOG(fmt, arg...) do { } while (0)
259 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
260 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
261 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
267 /***********************************************************************/
268 /** \name Internal types and structures */
271 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
273 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
276 * Test that the hardware lock is held by the caller, returning otherwise.
278 * \param dev DRM device.
279 * \param filp file pointer of the caller.
281 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
283 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
284 _file_priv->master->lock.file_priv != _file_priv) { \
285 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
286 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
287 _file_priv->master->lock.file_priv, _file_priv); \
293 * Ioctl function type.
295 * \param inode device inode.
296 * \param file_priv DRM file private pointer.
297 * \param cmd command.
298 * \param arg argument.
300 typedef int drm_ioctl_t(struct drm_device
*dev
, void *data
,
301 struct drm_file
*file_priv
);
303 typedef int drm_ioctl_compat_t(struct file
*filp
, unsigned int cmd
,
306 #define DRM_IOCTL_NR(n) _IOC_NR(n)
307 #define DRM_MAJOR 226
310 #define DRM_MASTER 0x2
311 #define DRM_ROOT_ONLY 0x4
312 #define DRM_CONTROL_ALLOW 0x8
313 #define DRM_UNLOCKED 0x10
314 #define DRM_RENDER_ALLOW 0x20
316 struct drm_ioctl_desc
{
320 unsigned int cmd_drv
;
325 * Creates a driver or general drm_ioctl_desc array entry for the given
326 * ioctl, for use by drm_ioctl().
329 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
330 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
332 struct drm_magic_entry
{
333 struct list_head head
;
334 struct drm_hash_item hash_item
;
335 struct drm_file
*priv
;
338 struct drm_vma_entry
{
339 struct list_head head
;
340 struct vm_area_struct
*vma
;
348 int idx
; /**< Index into master buflist */
349 int total
; /**< Buffer size */
350 int order
; /**< log-base-2(total) */
351 int used
; /**< Amount of buffer in use (for DMA) */
352 unsigned long offset
; /**< Byte offset (used internally) */
353 void *address
; /**< Address of buffer */
354 unsigned long bus_address
; /**< Bus address of buffer */
355 struct drm_buf
*next
; /**< Kernel-only: used for free list */
356 __volatile__
int waiting
; /**< On kernel DMA queue */
357 __volatile__
int pending
; /**< On hardware DMA queue */
358 struct drm_file
*file_priv
; /**< Private of holding file descr */
359 int context
; /**< Kernel queue for this buffer */
360 int while_locked
; /**< Dispatch this buffer while locked */
368 } list
; /**< Which list we're on */
370 int dev_priv_size
; /**< Size of buffer private storage */
371 void *dev_private
; /**< Per-buffer private storage */
374 /** bufs is one longer than it has to be */
375 struct drm_waitlist
{
376 int count
; /**< Number of possible buffers */
377 struct drm_buf
**bufs
; /**< List of pointers to buffers */
378 struct drm_buf
**rp
; /**< Read pointer */
379 struct drm_buf
**wp
; /**< Write pointer */
380 struct drm_buf
**end
; /**< End pointer */
381 spinlock_t read_lock
;
382 spinlock_t write_lock
;
385 struct drm_freelist
{
386 int initialized
; /**< Freelist in use */
387 atomic_t count
; /**< Number of free buffers */
388 struct drm_buf
*next
; /**< End pointer */
390 wait_queue_head_t waiting
; /**< Processes waiting on free bufs */
391 int low_mark
; /**< Low water mark */
392 int high_mark
; /**< High water mark */
393 atomic_t wfh
; /**< If waiting for high mark */
397 typedef struct drm_dma_handle
{
404 * Buffer entry. There is one of this for each buffer size order.
406 struct drm_buf_entry
{
407 int buf_size
; /**< size */
408 int buf_count
; /**< number of buffers */
409 struct drm_buf
*buflist
; /**< buffer list */
412 struct drm_dma_handle
**seglist
;
414 struct drm_freelist freelist
;
417 /* Event queued up for userspace to read */
418 struct drm_pending_event
{
419 struct drm_event
*event
;
420 struct list_head link
;
421 struct drm_file
*file_priv
;
422 pid_t pid
; /* pid of requester, no guarantee it's valid by the time
423 we deliver the event, for tracing only */
424 void (*destroy
)(struct drm_pending_event
*event
);
427 /* initial implementaton using a linked list - todo hashtab */
428 struct drm_prime_file_private
{
429 struct list_head head
;
433 /** File private data */
435 unsigned always_authenticated
:1;
436 unsigned authenticated
:1;
437 unsigned is_master
:1; /* this file private is a master for a minor */
438 /* true when the client has asked us to expose stereo 3D mode flags */
439 unsigned stereo_allowed
:1;
444 struct list_head lhead
;
445 struct drm_minor
*minor
;
446 unsigned long lock_count
;
448 /** Mapping of mm object handles to object pointers. */
449 struct idr object_idr
;
450 /** Lock for synchronization of access to object_idr. */
451 spinlock_t table_lock
;
456 struct drm_master
*master
; /* master this node is currently associated with
457 N.B. not always minor->master */
459 * fbs - List of framebuffers associated with this file.
461 * Protected by fbs_lock. Note that the fbs list holds a reference on
462 * the fb object to prevent it from untimely disappearing.
464 struct list_head fbs
;
465 struct mutex fbs_lock
;
467 wait_queue_head_t event_wait
;
468 struct list_head event_list
;
471 struct drm_prime_file_private prime
;
476 atomic_t use_count
; /**< Outstanding uses (+1) */
477 atomic_t finalization
; /**< Finalization in progress */
478 atomic_t block_count
; /**< Count of processes waiting */
479 atomic_t block_read
; /**< Queue blocked for reads */
480 wait_queue_head_t read_queue
; /**< Processes waiting on block_read */
481 atomic_t block_write
; /**< Queue blocked for writes */
482 wait_queue_head_t write_queue
; /**< Processes waiting on block_write */
483 atomic_t total_queued
; /**< Total queued statistic */
484 atomic_t total_flushed
; /**< Total flushes statistic */
485 atomic_t total_locks
; /**< Total locks statistics */
486 enum drm_ctx_flags flags
; /**< Context preserving and 2D-only */
487 struct drm_waitlist waitlist
; /**< Pending buffers */
488 wait_queue_head_t flush_queue
; /**< Processes waiting until flush */
494 struct drm_lock_data
{
495 struct drm_hw_lock
*hw_lock
; /**< Hardware lock */
496 /** Private of lock holder's file (NULL=kernel) */
497 struct drm_file
*file_priv
;
498 wait_queue_head_t lock_queue
; /**< Queue of blocked processes */
499 unsigned long lock_time
; /**< Time of last lock in jiffies */
501 uint32_t kernel_waiters
;
502 uint32_t user_waiters
;
509 struct drm_device_dma
{
511 struct drm_buf_entry bufs
[DRM_MAX_ORDER
+ 1]; /**< buffers, grouped by their size order */
512 int buf_count
; /**< total number of buffers */
513 struct drm_buf
**buflist
; /**< Vector of pointers into drm_device_dma::bufs */
515 int page_count
; /**< number of pages */
516 unsigned long *pagelist
; /**< page list */
517 unsigned long byte_count
;
519 _DRM_DMA_USE_AGP
= 0x01,
520 _DRM_DMA_USE_SG
= 0x02,
521 _DRM_DMA_USE_FB
= 0x04,
522 _DRM_DMA_USE_PCI_RO
= 0x08
528 * AGP memory entry. Stored as a doubly linked list.
531 unsigned long handle
; /**< handle */
532 struct agp_memory
*memory
;
533 unsigned long bound
; /**< address */
535 struct list_head head
;
541 * \sa drm_agp_init() and drm_device::agp.
543 struct drm_agp_head
{
544 struct agp_kern_info agp_info
; /**< AGP device information */
545 struct list_head memory
;
546 unsigned long mode
; /**< AGP mode */
547 struct agp_bridge_data
*bridge
;
548 int enabled
; /**< whether the AGP bus as been enabled */
549 int acquired
; /**< whether the AGP device has been acquired */
552 int cant_use_aperture
;
553 unsigned long page_mask
;
557 * Scatter-gather memory.
560 unsigned long handle
;
563 struct page
**pagelist
;
569 struct drm_hw_lock
*lock
;
574 * Kernel side of a mapping
576 struct drm_local_map
{
577 resource_size_t offset
; /**< Requested physical address (0 for SAREA)*/
578 unsigned long size
; /**< Requested physical size (bytes) */
579 enum drm_map_type type
; /**< Type of memory to map */
580 enum drm_map_flags flags
; /**< Flags */
581 void *handle
; /**< User-space: "Handle" to pass to mmap() */
582 /**< Kernel-space: kernel-virtual address */
583 int mtrr
; /**< MTRR slot used */
586 typedef struct drm_local_map drm_local_map_t
;
591 struct drm_map_list
{
592 struct list_head head
; /**< list head */
593 struct drm_hash_item hash
;
594 struct drm_local_map
*map
; /**< mapping */
596 struct drm_master
*master
;
600 * Context handle list
602 struct drm_ctx_list
{
603 struct list_head head
; /**< list head */
604 drm_context_t handle
; /**< context handle */
605 struct drm_file
*tag
; /**< associated fd private data */
608 /* location of GART table */
609 #define DRM_ATI_GART_MAIN 1
610 #define DRM_ATI_GART_FB 2
612 #define DRM_ATI_GART_PCI 1
613 #define DRM_ATI_GART_PCIE 2
614 #define DRM_ATI_GART_IGP 3
616 struct drm_ati_pcigart_info
{
617 int gart_table_location
;
621 dma_addr_t table_mask
;
622 struct drm_dma_handle
*table_handle
;
623 struct drm_local_map mapping
;
628 * This structure defines the drm_mm memory object, which will be used by the
629 * DRM for its buffer objects.
631 struct drm_gem_object
{
632 /** Reference count of this object */
633 struct kref refcount
;
636 * handle_count - gem file_priv handle count of this object
638 * Each handle also holds a reference. Note that when the handle_count
639 * drops to 0 any global names (e.g. the id in the flink namespace) will
642 * Protected by dev->object_name_lock.
644 unsigned handle_count
;
646 /** Related drm device */
647 struct drm_device
*dev
;
649 /** File representing the shmem storage */
652 /* Mapping info for this object */
653 struct drm_vma_offset_node vma_node
;
656 * Size of the object, in bytes. Immutable over the object's
662 * Global name for this object, starts at 1. 0 means unnamed.
663 * Access is covered by the object_name_lock in the related drm_device
668 * Memory domains. These monitor which caches contain read/write data
669 * related to the object. When transitioning from one set of domains
670 * to another, the driver is called to ensure that caches are suitably
671 * flushed and invalidated
673 uint32_t read_domains
;
674 uint32_t write_domain
;
677 * While validating an exec operation, the
678 * new read/write domain values are computed here.
679 * They will be transferred to the above values
680 * at the point that any cache flushing occurs
682 uint32_t pending_read_domains
;
683 uint32_t pending_write_domain
;
686 * dma_buf - dma buf associated with this GEM object
688 * Pointer to the dma-buf associated with this gem object (either
689 * through importing or exporting). We break the resulting reference
690 * loop when the last gem handle for this object is released.
692 * Protected by obj->object_name_lock
694 struct dma_buf
*dma_buf
;
697 * import_attach - dma buf attachment backing this object
699 * Any foreign dma_buf imported as a gem object has this set to the
700 * attachment point for the device. This is invariant over the lifetime
703 * The driver's ->gem_free_object callback is responsible for cleaning
704 * up the dma_buf attachment and references acquired at import time.
706 * Note that the drm gem/prime core does not depend upon drivers setting
707 * this field any more. So for drivers where this doesn't make sense
708 * (e.g. virtual devices or a displaylink behind an usb bus) they can
709 * simply leave it as NULL.
711 struct dma_buf_attachment
*import_attach
;
714 #include <drm/drm_crtc.h>
716 /* per-master structure */
719 struct kref refcount
; /* refcount for this master */
721 struct list_head head
; /**< each minor contains a list of masters */
722 struct drm_minor
*minor
; /**< link back to minor we are a master for */
724 char *unique
; /**< Unique identifier: e.g., busid */
725 int unique_len
; /**< Length of unique field */
726 int unique_size
; /**< amount allocated */
728 int blocked
; /**< Blocked due to VC switch? */
730 /** \name Authentication */
732 struct drm_open_hash magiclist
;
733 struct list_head magicfree
;
736 struct drm_lock_data lock
; /**< Information on hardware lock */
738 void *driver_priv
; /**< Private structure for driver to use */
741 /* Size of ringbuffer for vblank timestamps. Just double-buffer
742 * in initial implementation.
744 #define DRM_VBLANKTIME_RBSIZE 2
746 /* Flags and return codes for get_vblank_timestamp() driver function. */
747 #define DRM_CALLED_FROM_VBLIRQ 1
748 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
749 #define DRM_VBLANKTIME_INVBL (1 << 1)
751 /* get_scanout_position() return flags */
752 #define DRM_SCANOUTPOS_VALID (1 << 0)
753 #define DRM_SCANOUTPOS_INVBL (1 << 1)
754 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
758 int (*get_irq
)(struct drm_device
*dev
);
759 const char *(*get_name
)(struct drm_device
*dev
);
760 int (*set_busid
)(struct drm_device
*dev
, struct drm_master
*master
);
761 int (*set_unique
)(struct drm_device
*dev
, struct drm_master
*master
,
762 struct drm_unique
*unique
);
763 int (*irq_by_busid
)(struct drm_device
*dev
, struct drm_irq_busid
*p
);
767 * DRM driver structure. This structure represent the common code for
768 * a family of cards. There will one drm_device for each card present
772 int (*load
) (struct drm_device
*, unsigned long flags
);
773 int (*firstopen
) (struct drm_device
*);
774 int (*open
) (struct drm_device
*, struct drm_file
*);
775 void (*preclose
) (struct drm_device
*, struct drm_file
*file_priv
);
776 void (*postclose
) (struct drm_device
*, struct drm_file
*);
777 void (*lastclose
) (struct drm_device
*);
778 int (*unload
) (struct drm_device
*);
779 int (*suspend
) (struct drm_device
*, pm_message_t state
);
780 int (*resume
) (struct drm_device
*);
781 int (*dma_ioctl
) (struct drm_device
*dev
, void *data
, struct drm_file
*file_priv
);
782 int (*dma_quiescent
) (struct drm_device
*);
783 int (*context_dtor
) (struct drm_device
*dev
, int context
);
786 * get_vblank_counter - get raw hardware vblank counter
788 * @crtc: counter to fetch
790 * Driver callback for fetching a raw hardware vblank counter for @crtc.
791 * If a device doesn't have a hardware counter, the driver can simply
792 * return the value of drm_vblank_count. The DRM core will account for
793 * missed vblank events while interrupts where disabled based on system
796 * Wraparound handling and loss of events due to modesetting is dealt
797 * with in the DRM core code.
800 * Raw vblank counter value.
802 u32 (*get_vblank_counter
) (struct drm_device
*dev
, int crtc
);
805 * enable_vblank - enable vblank interrupt events
807 * @crtc: which irq to enable
809 * Enable vblank interrupts for @crtc. If the device doesn't have
810 * a hardware vblank counter, this routine should be a no-op, since
811 * interrupts will have to stay on to keep the count accurate.
814 * Zero on success, appropriate errno if the given @crtc's vblank
815 * interrupt cannot be enabled.
817 int (*enable_vblank
) (struct drm_device
*dev
, int crtc
);
820 * disable_vblank - disable vblank interrupt events
822 * @crtc: which irq to enable
824 * Disable vblank interrupts for @crtc. If the device doesn't have
825 * a hardware vblank counter, this routine should be a no-op, since
826 * interrupts will have to stay on to keep the count accurate.
828 void (*disable_vblank
) (struct drm_device
*dev
, int crtc
);
831 * Called by \c drm_device_is_agp. Typically used to determine if a
832 * card is really attached to AGP or not.
834 * \param dev DRM device handle
837 * One of three values is returned depending on whether or not the
838 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
839 * (return of 1), or may or may not be AGP (return of 2).
841 int (*device_is_agp
) (struct drm_device
*dev
);
844 * Called by vblank timestamping code.
846 * Return the current display scanout position from a crtc, and an
847 * optional accurate ktime_get timestamp of when position was measured.
849 * \param dev DRM device.
850 * \param crtc Id of the crtc to query.
851 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
852 * \param *vpos Target location for current vertical scanout position.
853 * \param *hpos Target location for current horizontal scanout position.
854 * \param *stime Target location for timestamp taken immediately before
855 * scanout position query. Can be NULL to skip timestamp.
856 * \param *etime Target location for timestamp taken immediately after
857 * scanout position query. Can be NULL to skip timestamp.
859 * Returns vpos as a positive number while in active scanout area.
860 * Returns vpos as a negative number inside vblank, counting the number
861 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
862 * until start of active scanout / end of vblank."
864 * \return Flags, or'ed together as follows:
866 * DRM_SCANOUTPOS_VALID = Query successful.
867 * DRM_SCANOUTPOS_INVBL = Inside vblank.
868 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
869 * this flag means that returned position may be offset by a constant
870 * but unknown small number of scanlines wrt. real scanout position.
873 int (*get_scanout_position
) (struct drm_device
*dev
, int crtc
,
875 int *vpos
, int *hpos
, ktime_t
*stime
,
879 * Called by \c drm_get_last_vbltimestamp. Should return a precise
880 * timestamp when the most recent VBLANK interval ended or will end.
882 * Specifically, the timestamp in @vblank_time should correspond as
883 * closely as possible to the time when the first video scanline of
884 * the video frame after the end of VBLANK will start scanning out,
885 * the time immediately after end of the VBLANK interval. If the
886 * @crtc is currently inside VBLANK, this will be a time in the future.
887 * If the @crtc is currently scanning out a frame, this will be the
888 * past start time of the current scanout. This is meant to adhere
889 * to the OpenML OML_sync_control extension specification.
891 * \param dev dev DRM device handle.
892 * \param crtc crtc for which timestamp should be returned.
893 * \param *max_error Maximum allowable timestamp error in nanoseconds.
894 * Implementation should strive to provide timestamp
895 * with an error of at most *max_error nanoseconds.
896 * Returns true upper bound on error for timestamp.
897 * \param *vblank_time Target location for returned vblank timestamp.
898 * \param flags 0 = Defaults, no special treatment needed.
899 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
900 * irq handler. Some drivers need to apply some workarounds
901 * for gpu-specific vblank irq quirks if flag is set.
904 * Zero if timestamping isn't supported in current display mode or a
905 * negative number on failure. A positive status code on success,
906 * which describes how the vblank_time timestamp was computed.
908 int (*get_vblank_timestamp
) (struct drm_device
*dev
, int crtc
,
910 struct timeval
*vblank_time
,
913 /* these have to be filled in */
915 irqreturn_t(*irq_handler
) (int irq
, void *arg
);
916 void (*irq_preinstall
) (struct drm_device
*dev
);
917 int (*irq_postinstall
) (struct drm_device
*dev
);
918 void (*irq_uninstall
) (struct drm_device
*dev
);
920 /* Master routines */
921 int (*master_create
)(struct drm_device
*dev
, struct drm_master
*master
);
922 void (*master_destroy
)(struct drm_device
*dev
, struct drm_master
*master
);
924 * master_set is called whenever the minor master is set.
925 * master_drop is called whenever the minor master is dropped.
928 int (*master_set
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
930 void (*master_drop
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
933 int (*debugfs_init
)(struct drm_minor
*minor
);
934 void (*debugfs_cleanup
)(struct drm_minor
*minor
);
937 * Driver-specific constructor for drm_gem_objects, to set up
938 * obj->driver_private.
940 * Returns 0 on success.
942 void (*gem_free_object
) (struct drm_gem_object
*obj
);
943 int (*gem_open_object
) (struct drm_gem_object
*, struct drm_file
*);
944 void (*gem_close_object
) (struct drm_gem_object
*, struct drm_file
*);
947 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
948 int (*prime_handle_to_fd
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
949 uint32_t handle
, uint32_t flags
, int *prime_fd
);
950 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
951 int (*prime_fd_to_handle
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
952 int prime_fd
, uint32_t *handle
);
953 /* export GEM -> dmabuf */
954 struct dma_buf
* (*gem_prime_export
)(struct drm_device
*dev
,
955 struct drm_gem_object
*obj
, int flags
);
956 /* import dmabuf -> GEM */
957 struct drm_gem_object
* (*gem_prime_import
)(struct drm_device
*dev
,
958 struct dma_buf
*dma_buf
);
959 /* low-level interface used by drm_gem_prime_{import,export} */
960 int (*gem_prime_pin
)(struct drm_gem_object
*obj
);
961 void (*gem_prime_unpin
)(struct drm_gem_object
*obj
);
962 struct sg_table
*(*gem_prime_get_sg_table
)(struct drm_gem_object
*obj
);
963 struct drm_gem_object
*(*gem_prime_import_sg_table
)(
964 struct drm_device
*dev
, size_t size
,
965 struct sg_table
*sgt
);
966 void *(*gem_prime_vmap
)(struct drm_gem_object
*obj
);
967 void (*gem_prime_vunmap
)(struct drm_gem_object
*obj
, void *vaddr
);
968 int (*gem_prime_mmap
)(struct drm_gem_object
*obj
,
969 struct vm_area_struct
*vma
);
971 /* vga arb irq handler */
972 void (*vgaarb_irq
)(struct drm_device
*dev
, bool state
);
974 /* dumb alloc support */
975 int (*dumb_create
)(struct drm_file
*file_priv
,
976 struct drm_device
*dev
,
977 struct drm_mode_create_dumb
*args
);
978 int (*dumb_map_offset
)(struct drm_file
*file_priv
,
979 struct drm_device
*dev
, uint32_t handle
,
981 int (*dumb_destroy
)(struct drm_file
*file_priv
,
982 struct drm_device
*dev
,
985 /* Driver private ops for this object */
986 const struct vm_operations_struct
*gem_vm_ops
;
997 const struct drm_ioctl_desc
*ioctls
;
999 const struct file_operations
*fops
;
1001 struct pci_driver
*pci
;
1002 struct platform_device
*platform_device
;
1003 struct usb_driver
*usb
;
1005 struct drm_bus
*bus
;
1007 /* List of devices hanging off this driver with stealth attach. */
1008 struct list_head legacy_dev_list
;
1011 #define DRM_MINOR_UNASSIGNED 0
1012 #define DRM_MINOR_LEGACY 1
1013 #define DRM_MINOR_CONTROL 2
1014 #define DRM_MINOR_RENDER 3
1017 * Info file list entry. This structure represents a debugfs or proc file to
1018 * be created by the drm core
1020 struct drm_info_list
{
1021 const char *name
; /** file name */
1022 int (*show
)(struct seq_file
*, void*); /** show callback */
1023 u32 driver_features
; /**< Required driver features for this entry */
1028 * debugfs node structure. This structure represents a debugfs file.
1030 struct drm_info_node
{
1031 struct list_head list
;
1032 struct drm_minor
*minor
;
1033 const struct drm_info_list
*info_ent
;
1034 struct dentry
*dent
;
1038 * DRM minor structure. This structure represents a drm minor number.
1041 int index
; /**< Minor device number */
1042 int type
; /**< Control or render */
1043 dev_t device
; /**< Device number for mknod */
1044 struct device
*kdev
; /**< Linux device */
1045 struct drm_device
*dev
;
1047 struct dentry
*debugfs_root
;
1049 struct list_head debugfs_list
;
1050 struct mutex debugfs_lock
; /* Protects debugfs_list. */
1052 struct drm_master
*master
; /* currently active master for this node */
1053 struct list_head master_list
;
1054 struct drm_mode_group mode_group
;
1057 /* mode specified on the command line */
1058 struct drm_cmdline_mode
{
1060 bool refresh_specified
;
1069 enum drm_connector_force force
;
1073 struct drm_pending_vblank_event
{
1074 struct drm_pending_event base
;
1076 struct drm_event_vblank event
;
1079 struct drm_vblank_crtc
{
1080 wait_queue_head_t queue
; /**< VBLANK wait queue */
1081 struct timeval time
[DRM_VBLANKTIME_RBSIZE
]; /**< timestamp of current count */
1082 atomic_t count
; /**< number of VBLANK interrupts */
1083 atomic_t refcount
; /* number of users of vblank interruptsper crtc */
1084 u32 last
; /* protected by dev->vbl_lock, used */
1085 /* for wraparound handling */
1086 u32 last_wait
; /* Last vblank seqno waited per CRTC */
1087 unsigned int inmodeset
; /* Display driver is setting mode */
1088 bool enabled
; /* so we don't call enable more than
1093 * DRM device structure. This structure represent a complete card that
1094 * may contain multiple heads.
1097 struct list_head legacy_dev_list
;/**< list of devices per driver for stealth attach cleanup */
1098 char *devname
; /**< For /proc/interrupts */
1099 int if_version
; /**< Highest interface version set */
1103 spinlock_t count_lock
; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1104 struct mutex struct_mutex
; /**< For others */
1107 /** \name Usage Counters */
1109 int open_count
; /**< Outstanding files open */
1110 int buf_use
; /**< Buffers in use -- cannot alloc */
1111 atomic_t buf_alloc
; /**< Buffer allocation in progress */
1114 struct list_head filelist
;
1116 /** \name Memory management */
1118 struct list_head maplist
; /**< Linked list of regions */
1119 struct drm_open_hash map_hash
; /**< User token hash table for maps */
1121 /** \name Context handle management */
1123 struct list_head ctxlist
; /**< Linked list of context handles */
1124 struct mutex ctxlist_mutex
; /**< For ctxlist */
1128 struct list_head vmalist
; /**< List of vmas (for debugging) */
1132 /** \name DMA support */
1134 struct drm_device_dma
*dma
; /**< Optional pointer for DMA support */
1137 /** \name Context support */
1139 bool irq_enabled
; /**< True if irq handler is enabled */
1140 __volatile__
long context_flag
; /**< Context swapping flag */
1141 int last_context
; /**< Last current context */
1144 /** \name VBLANK IRQ support */
1148 * At load time, disabling the vblank interrupt won't be allowed since
1149 * old clients may not call the modeset ioctl and therefore misbehave.
1150 * Once the modeset ioctl *has* been called though, we can safely
1151 * disable them when unused.
1153 bool vblank_disable_allowed
;
1155 /* array of size num_crtcs */
1156 struct drm_vblank_crtc
*vblank
;
1158 spinlock_t vblank_time_lock
; /**< Protects vblank count and time updates during vblank enable/disable */
1159 spinlock_t vbl_lock
;
1160 struct timer_list vblank_disable_timer
;
1162 u32 max_vblank_count
; /**< size of vblank counter register */
1167 struct list_head vblank_event_list
;
1168 spinlock_t event_lock
;
1172 struct drm_agp_head
*agp
; /**< AGP data */
1174 struct device
*dev
; /**< Device structure */
1175 struct pci_dev
*pdev
; /**< PCI device structure */
1177 struct pci_controller
*hose
;
1180 struct platform_device
*platformdev
; /**< Platform device struture */
1181 struct usb_device
*usbdev
;
1183 struct drm_sg_mem
*sg
; /**< Scatter gather memory */
1184 unsigned int num_crtcs
; /**< Number of CRTCs on this device */
1185 void *dev_private
; /**< device private data */
1186 struct address_space
*dev_mapping
;
1187 struct drm_sigdata sigdata
; /**< For block_all_signals */
1190 struct drm_driver
*driver
;
1191 struct drm_local_map
*agp_buffer_map
;
1192 unsigned int agp_buffer_token
;
1193 struct drm_minor
*control
; /**< Control node for card */
1194 struct drm_minor
*primary
; /**< render type primary screen head */
1195 struct drm_minor
*render
; /**< render node for card */
1197 struct drm_mode_config mode_config
; /**< Current mode config */
1199 /** \name GEM information */
1201 struct mutex object_name_lock
;
1202 struct idr object_name_idr
;
1203 struct drm_vma_offset_manager
*vma_offset_manager
;
1205 int switch_power_state
;
1207 atomic_t unplugged
; /* device has been unplugged or gone away */
1210 #define DRM_SWITCH_POWER_ON 0
1211 #define DRM_SWITCH_POWER_OFF 1
1212 #define DRM_SWITCH_POWER_CHANGING 2
1213 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3
1215 static __inline__
int drm_core_check_feature(struct drm_device
*dev
,
1218 return ((dev
->driver
->driver_features
& feature
) ? 1 : 0);
1221 static inline int drm_dev_to_irq(struct drm_device
*dev
)
1223 return dev
->driver
->bus
->get_irq(dev
);
1226 static inline void drm_device_set_unplugged(struct drm_device
*dev
)
1229 atomic_set(&dev
->unplugged
, 1);
1232 static inline int drm_device_is_unplugged(struct drm_device
*dev
)
1234 int ret
= atomic_read(&dev
->unplugged
);
1239 static inline bool drm_modeset_is_locked(struct drm_device
*dev
)
1241 return mutex_is_locked(&dev
->mode_config
.mutex
);
1244 static inline bool drm_is_render_client(struct drm_file
*file_priv
)
1246 return file_priv
->minor
->type
== DRM_MINOR_RENDER
;
1249 /******************************************************************/
1250 /** \name Internal function definitions */
1253 /* Driver support (drm_drv.h) */
1254 extern long drm_ioctl(struct file
*filp
,
1255 unsigned int cmd
, unsigned long arg
);
1256 extern long drm_compat_ioctl(struct file
*filp
,
1257 unsigned int cmd
, unsigned long arg
);
1258 extern int drm_lastclose(struct drm_device
*dev
);
1260 /* Device support (drm_fops.h) */
1261 extern struct mutex drm_global_mutex
;
1262 extern int drm_open(struct inode
*inode
, struct file
*filp
);
1263 extern int drm_stub_open(struct inode
*inode
, struct file
*filp
);
1264 extern ssize_t
drm_read(struct file
*filp
, char __user
*buffer
,
1265 size_t count
, loff_t
*offset
);
1266 extern int drm_release(struct inode
*inode
, struct file
*filp
);
1268 /* Mapping support (drm_vm.h) */
1269 extern int drm_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1270 extern int drm_mmap_locked(struct file
*filp
, struct vm_area_struct
*vma
);
1271 extern void drm_vm_open_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1272 extern void drm_vm_close_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1273 extern unsigned int drm_poll(struct file
*filp
, struct poll_table_struct
*wait
);
1275 /* Memory management support (drm_memory.h) */
1276 #include <drm/drm_memory.h>
1279 /* Misc. IOCTL support (drm_ioctl.h) */
1280 extern int drm_irq_by_busid(struct drm_device
*dev
, void *data
,
1281 struct drm_file
*file_priv
);
1282 extern int drm_getunique(struct drm_device
*dev
, void *data
,
1283 struct drm_file
*file_priv
);
1284 extern int drm_setunique(struct drm_device
*dev
, void *data
,
1285 struct drm_file
*file_priv
);
1286 extern int drm_getmap(struct drm_device
*dev
, void *data
,
1287 struct drm_file
*file_priv
);
1288 extern int drm_getclient(struct drm_device
*dev
, void *data
,
1289 struct drm_file
*file_priv
);
1290 extern int drm_getstats(struct drm_device
*dev
, void *data
,
1291 struct drm_file
*file_priv
);
1292 extern int drm_getcap(struct drm_device
*dev
, void *data
,
1293 struct drm_file
*file_priv
);
1294 extern int drm_setclientcap(struct drm_device
*dev
, void *data
,
1295 struct drm_file
*file_priv
);
1296 extern int drm_setversion(struct drm_device
*dev
, void *data
,
1297 struct drm_file
*file_priv
);
1298 extern int drm_noop(struct drm_device
*dev
, void *data
,
1299 struct drm_file
*file_priv
);
1301 /* Context IOCTL support (drm_context.h) */
1302 extern int drm_resctx(struct drm_device
*dev
, void *data
,
1303 struct drm_file
*file_priv
);
1304 extern int drm_addctx(struct drm_device
*dev
, void *data
,
1305 struct drm_file
*file_priv
);
1306 extern int drm_getctx(struct drm_device
*dev
, void *data
,
1307 struct drm_file
*file_priv
);
1308 extern int drm_switchctx(struct drm_device
*dev
, void *data
,
1309 struct drm_file
*file_priv
);
1310 extern int drm_newctx(struct drm_device
*dev
, void *data
,
1311 struct drm_file
*file_priv
);
1312 extern int drm_rmctx(struct drm_device
*dev
, void *data
,
1313 struct drm_file
*file_priv
);
1315 extern int drm_ctxbitmap_init(struct drm_device
*dev
);
1316 extern void drm_ctxbitmap_cleanup(struct drm_device
*dev
);
1317 extern void drm_ctxbitmap_free(struct drm_device
*dev
, int ctx_handle
);
1319 extern int drm_setsareactx(struct drm_device
*dev
, void *data
,
1320 struct drm_file
*file_priv
);
1321 extern int drm_getsareactx(struct drm_device
*dev
, void *data
,
1322 struct drm_file
*file_priv
);
1324 /* Authentication IOCTL support (drm_auth.h) */
1325 extern int drm_getmagic(struct drm_device
*dev
, void *data
,
1326 struct drm_file
*file_priv
);
1327 extern int drm_authmagic(struct drm_device
*dev
, void *data
,
1328 struct drm_file
*file_priv
);
1329 extern int drm_remove_magic(struct drm_master
*master
, drm_magic_t magic
);
1331 /* Cache management (drm_cache.c) */
1332 void drm_clflush_pages(struct page
*pages
[], unsigned long num_pages
);
1333 void drm_clflush_sg(struct sg_table
*st
);
1334 void drm_clflush_virt_range(char *addr
, unsigned long length
);
1336 /* Locking IOCTL support (drm_lock.h) */
1337 extern int drm_lock(struct drm_device
*dev
, void *data
,
1338 struct drm_file
*file_priv
);
1339 extern int drm_unlock(struct drm_device
*dev
, void *data
,
1340 struct drm_file
*file_priv
);
1341 extern int drm_lock_free(struct drm_lock_data
*lock_data
, unsigned int context
);
1342 extern void drm_idlelock_take(struct drm_lock_data
*lock_data
);
1343 extern void drm_idlelock_release(struct drm_lock_data
*lock_data
);
1346 * These are exported to drivers so that they can implement fencing using
1347 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1350 extern int drm_i_have_hw_lock(struct drm_device
*dev
, struct drm_file
*file_priv
);
1352 /* Buffer management support (drm_bufs.h) */
1353 extern int drm_addbufs_agp(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1354 extern int drm_addbufs_pci(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1355 extern int drm_addmap(struct drm_device
*dev
, resource_size_t offset
,
1356 unsigned int size
, enum drm_map_type type
,
1357 enum drm_map_flags flags
, struct drm_local_map
**map_ptr
);
1358 extern int drm_addmap_ioctl(struct drm_device
*dev
, void *data
,
1359 struct drm_file
*file_priv
);
1360 extern int drm_rmmap(struct drm_device
*dev
, struct drm_local_map
*map
);
1361 extern int drm_rmmap_locked(struct drm_device
*dev
, struct drm_local_map
*map
);
1362 extern int drm_rmmap_ioctl(struct drm_device
*dev
, void *data
,
1363 struct drm_file
*file_priv
);
1364 extern int drm_addbufs(struct drm_device
*dev
, void *data
,
1365 struct drm_file
*file_priv
);
1366 extern int drm_infobufs(struct drm_device
*dev
, void *data
,
1367 struct drm_file
*file_priv
);
1368 extern int drm_markbufs(struct drm_device
*dev
, void *data
,
1369 struct drm_file
*file_priv
);
1370 extern int drm_freebufs(struct drm_device
*dev
, void *data
,
1371 struct drm_file
*file_priv
);
1372 extern int drm_mapbufs(struct drm_device
*dev
, void *data
,
1373 struct drm_file
*file_priv
);
1374 extern int drm_dma_ioctl(struct drm_device
*dev
, void *data
,
1375 struct drm_file
*file_priv
);
1377 /* DMA support (drm_dma.h) */
1378 extern int drm_legacy_dma_setup(struct drm_device
*dev
);
1379 extern void drm_legacy_dma_takedown(struct drm_device
*dev
);
1380 extern void drm_free_buffer(struct drm_device
*dev
, struct drm_buf
* buf
);
1381 extern void drm_core_reclaim_buffers(struct drm_device
*dev
,
1382 struct drm_file
*filp
);
1384 /* IRQ support (drm_irq.h) */
1385 extern int drm_control(struct drm_device
*dev
, void *data
,
1386 struct drm_file
*file_priv
);
1387 extern int drm_irq_install(struct drm_device
*dev
);
1388 extern int drm_irq_uninstall(struct drm_device
*dev
);
1390 extern int drm_vblank_init(struct drm_device
*dev
, int num_crtcs
);
1391 extern int drm_wait_vblank(struct drm_device
*dev
, void *data
,
1392 struct drm_file
*filp
);
1393 extern u32
drm_vblank_count(struct drm_device
*dev
, int crtc
);
1394 extern u32
drm_vblank_count_and_time(struct drm_device
*dev
, int crtc
,
1395 struct timeval
*vblanktime
);
1396 extern void drm_send_vblank_event(struct drm_device
*dev
, int crtc
,
1397 struct drm_pending_vblank_event
*e
);
1398 extern bool drm_handle_vblank(struct drm_device
*dev
, int crtc
);
1399 extern int drm_vblank_get(struct drm_device
*dev
, int crtc
);
1400 extern void drm_vblank_put(struct drm_device
*dev
, int crtc
);
1401 extern void drm_vblank_off(struct drm_device
*dev
, int crtc
);
1402 extern void drm_vblank_cleanup(struct drm_device
*dev
);
1403 extern u32
drm_get_last_vbltimestamp(struct drm_device
*dev
, int crtc
,
1404 struct timeval
*tvblank
, unsigned flags
);
1405 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device
*dev
,
1406 int crtc
, int *max_error
,
1407 struct timeval
*vblank_time
,
1409 const struct drm_crtc
*refcrtc
,
1410 const struct drm_display_mode
*mode
);
1411 extern void drm_calc_timestamping_constants(struct drm_crtc
*crtc
,
1412 const struct drm_display_mode
*mode
);
1415 drm_mode_parse_command_line_for_connector(const char *mode_option
,
1416 struct drm_connector
*connector
,
1417 struct drm_cmdline_mode
*mode
);
1419 extern struct drm_display_mode
*
1420 drm_mode_create_from_cmdline_mode(struct drm_device
*dev
,
1421 struct drm_cmdline_mode
*cmd
);
1423 extern int drm_display_mode_from_videomode(const struct videomode
*vm
,
1424 struct drm_display_mode
*dmode
);
1425 extern int of_get_drm_display_mode(struct device_node
*np
,
1426 struct drm_display_mode
*dmode
,
1429 /* Modesetting support */
1430 extern void drm_vblank_pre_modeset(struct drm_device
*dev
, int crtc
);
1431 extern void drm_vblank_post_modeset(struct drm_device
*dev
, int crtc
);
1432 extern int drm_modeset_ctl(struct drm_device
*dev
, void *data
,
1433 struct drm_file
*file_priv
);
1435 /* AGP/GART support (drm_agpsupport.h) */
1437 #include <drm/drm_agpsupport.h>
1439 /* Stub support (drm_stub.h) */
1440 extern int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
1441 struct drm_file
*file_priv
);
1442 extern int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
1443 struct drm_file
*file_priv
);
1444 struct drm_master
*drm_master_create(struct drm_minor
*minor
);
1445 extern struct drm_master
*drm_master_get(struct drm_master
*master
);
1446 extern void drm_master_put(struct drm_master
**master
);
1448 extern void drm_put_dev(struct drm_device
*dev
);
1449 extern void drm_unplug_dev(struct drm_device
*dev
);
1450 extern unsigned int drm_debug
;
1451 extern unsigned int drm_rnodes
;
1453 extern unsigned int drm_vblank_offdelay
;
1454 extern unsigned int drm_timestamp_precision
;
1455 extern unsigned int drm_timestamp_monotonic
;
1457 extern struct class *drm_class
;
1458 extern struct dentry
*drm_debugfs_root
;
1460 extern struct idr drm_minors_idr
;
1462 extern struct drm_local_map
*drm_getsarea(struct drm_device
*dev
);
1464 /* Debugfs support */
1465 #if defined(CONFIG_DEBUG_FS)
1466 extern int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1467 struct dentry
*root
);
1468 extern int drm_debugfs_create_files(const struct drm_info_list
*files
,
1469 int count
, struct dentry
*root
,
1470 struct drm_minor
*minor
);
1471 extern int drm_debugfs_remove_files(const struct drm_info_list
*files
,
1472 int count
, struct drm_minor
*minor
);
1473 extern int drm_debugfs_cleanup(struct drm_minor
*minor
);
1475 static inline int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1476 struct dentry
*root
)
1481 static inline int drm_debugfs_create_files(const struct drm_info_list
*files
,
1482 int count
, struct dentry
*root
,
1483 struct drm_minor
*minor
)
1488 static inline int drm_debugfs_remove_files(const struct drm_info_list
*files
,
1489 int count
, struct drm_minor
*minor
)
1494 static inline int drm_debugfs_cleanup(struct drm_minor
*minor
)
1500 /* Info file support */
1501 extern int drm_name_info(struct seq_file
*m
, void *data
);
1502 extern int drm_vm_info(struct seq_file
*m
, void *data
);
1503 extern int drm_bufs_info(struct seq_file
*m
, void *data
);
1504 extern int drm_vblank_info(struct seq_file
*m
, void *data
);
1505 extern int drm_clients_info(struct seq_file
*m
, void* data
);
1506 extern int drm_gem_name_info(struct seq_file
*m
, void *data
);
1509 extern struct dma_buf
*drm_gem_prime_export(struct drm_device
*dev
,
1510 struct drm_gem_object
*obj
, int flags
);
1511 extern int drm_gem_prime_handle_to_fd(struct drm_device
*dev
,
1512 struct drm_file
*file_priv
, uint32_t handle
, uint32_t flags
,
1514 extern struct drm_gem_object
*drm_gem_prime_import(struct drm_device
*dev
,
1515 struct dma_buf
*dma_buf
);
1516 extern int drm_gem_prime_fd_to_handle(struct drm_device
*dev
,
1517 struct drm_file
*file_priv
, int prime_fd
, uint32_t *handle
);
1518 extern void drm_gem_dmabuf_release(struct dma_buf
*dma_buf
);
1520 extern int drm_prime_handle_to_fd_ioctl(struct drm_device
*dev
, void *data
,
1521 struct drm_file
*file_priv
);
1522 extern int drm_prime_fd_to_handle_ioctl(struct drm_device
*dev
, void *data
,
1523 struct drm_file
*file_priv
);
1525 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table
*sgt
, struct page
**pages
,
1526 dma_addr_t
*addrs
, int max_pages
);
1527 extern struct sg_table
*drm_prime_pages_to_sg(struct page
**pages
, int nr_pages
);
1528 extern void drm_prime_gem_destroy(struct drm_gem_object
*obj
, struct sg_table
*sg
);
1530 int drm_gem_dumb_destroy(struct drm_file
*file
,
1531 struct drm_device
*dev
,
1534 void drm_prime_init_file_private(struct drm_prime_file_private
*prime_fpriv
);
1535 void drm_prime_destroy_file_private(struct drm_prime_file_private
*prime_fpriv
);
1536 void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
);
1539 extern int drm_vma_info(struct seq_file
*m
, void *data
);
1542 /* Scatter Gather Support (drm_scatter.h) */
1543 extern void drm_legacy_sg_cleanup(struct drm_device
*dev
);
1544 extern int drm_sg_alloc(struct drm_device
*dev
, void *data
,
1545 struct drm_file
*file_priv
);
1546 extern int drm_sg_free(struct drm_device
*dev
, void *data
,
1547 struct drm_file
*file_priv
);
1549 /* ATI PCIGART support (ati_pcigart.h) */
1550 extern int drm_ati_pcigart_init(struct drm_device
*dev
,
1551 struct drm_ati_pcigart_info
* gart_info
);
1552 extern int drm_ati_pcigart_cleanup(struct drm_device
*dev
,
1553 struct drm_ati_pcigart_info
* gart_info
);
1555 extern drm_dma_handle_t
*drm_pci_alloc(struct drm_device
*dev
, size_t size
,
1557 extern void __drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1558 extern void drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1560 /* sysfs support (drm_sysfs.c) */
1561 struct drm_sysfs_class
;
1562 extern struct class *drm_sysfs_create(struct module
*owner
, char *name
);
1563 extern void drm_sysfs_destroy(void);
1564 extern int drm_sysfs_device_add(struct drm_minor
*minor
);
1565 extern void drm_sysfs_hotplug_event(struct drm_device
*dev
);
1566 extern void drm_sysfs_device_remove(struct drm_minor
*minor
);
1567 extern int drm_sysfs_connector_add(struct drm_connector
*connector
);
1568 extern void drm_sysfs_connector_remove(struct drm_connector
*connector
);
1570 /* Graphics Execution Manager library functions (drm_gem.c) */
1571 int drm_gem_init(struct drm_device
*dev
);
1572 void drm_gem_destroy(struct drm_device
*dev
);
1573 void drm_gem_object_release(struct drm_gem_object
*obj
);
1574 void drm_gem_object_free(struct kref
*kref
);
1575 int drm_gem_object_init(struct drm_device
*dev
,
1576 struct drm_gem_object
*obj
, size_t size
);
1577 void drm_gem_private_object_init(struct drm_device
*dev
,
1578 struct drm_gem_object
*obj
, size_t size
);
1579 void drm_gem_vm_open(struct vm_area_struct
*vma
);
1580 void drm_gem_vm_close(struct vm_area_struct
*vma
);
1581 int drm_gem_mmap_obj(struct drm_gem_object
*obj
, unsigned long obj_size
,
1582 struct vm_area_struct
*vma
);
1583 int drm_gem_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1585 #include <drm/drm_global.h>
1588 drm_gem_object_reference(struct drm_gem_object
*obj
)
1590 kref_get(&obj
->refcount
);
1594 drm_gem_object_unreference(struct drm_gem_object
*obj
)
1597 kref_put(&obj
->refcount
, drm_gem_object_free
);
1601 drm_gem_object_unreference_unlocked(struct drm_gem_object
*obj
)
1603 if (obj
&& !atomic_add_unless(&obj
->refcount
.refcount
, -1, 1)) {
1604 struct drm_device
*dev
= obj
->dev
;
1606 mutex_lock(&dev
->struct_mutex
);
1607 if (likely(atomic_dec_and_test(&obj
->refcount
.refcount
)))
1608 drm_gem_object_free(&obj
->refcount
);
1609 mutex_unlock(&dev
->struct_mutex
);
1613 int drm_gem_handle_create_tail(struct drm_file
*file_priv
,
1614 struct drm_gem_object
*obj
,
1616 int drm_gem_handle_create(struct drm_file
*file_priv
,
1617 struct drm_gem_object
*obj
,
1619 int drm_gem_handle_delete(struct drm_file
*filp
, u32 handle
);
1622 void drm_gem_free_mmap_offset(struct drm_gem_object
*obj
);
1623 int drm_gem_create_mmap_offset(struct drm_gem_object
*obj
);
1624 int drm_gem_create_mmap_offset_size(struct drm_gem_object
*obj
, size_t size
);
1626 struct page
**drm_gem_get_pages(struct drm_gem_object
*obj
, gfp_t gfpmask
);
1627 void drm_gem_put_pages(struct drm_gem_object
*obj
, struct page
**pages
,
1628 bool dirty
, bool accessed
);
1630 struct drm_gem_object
*drm_gem_object_lookup(struct drm_device
*dev
,
1631 struct drm_file
*filp
,
1633 int drm_gem_close_ioctl(struct drm_device
*dev
, void *data
,
1634 struct drm_file
*file_priv
);
1635 int drm_gem_flink_ioctl(struct drm_device
*dev
, void *data
,
1636 struct drm_file
*file_priv
);
1637 int drm_gem_open_ioctl(struct drm_device
*dev
, void *data
,
1638 struct drm_file
*file_priv
);
1639 void drm_gem_open(struct drm_device
*dev
, struct drm_file
*file_private
);
1640 void drm_gem_release(struct drm_device
*dev
, struct drm_file
*file_private
);
1642 extern void drm_core_ioremap(struct drm_local_map
*map
, struct drm_device
*dev
);
1643 extern void drm_core_ioremap_wc(struct drm_local_map
*map
, struct drm_device
*dev
);
1644 extern void drm_core_ioremapfree(struct drm_local_map
*map
, struct drm_device
*dev
);
1646 static __inline__
struct drm_local_map
*drm_core_findmap(struct drm_device
*dev
,
1649 struct drm_map_list
*_entry
;
1650 list_for_each_entry(_entry
, &dev
->maplist
, head
)
1651 if (_entry
->user_token
== token
)
1656 static __inline__
void drm_core_dropmap(struct drm_local_map
*map
)
1660 #include <drm/drm_mem_util.h>
1662 struct drm_device
*drm_dev_alloc(struct drm_driver
*driver
,
1663 struct device
*parent
);
1664 void drm_dev_free(struct drm_device
*dev
);
1665 int drm_dev_register(struct drm_device
*dev
, unsigned long flags
);
1666 void drm_dev_unregister(struct drm_device
*dev
);
1670 static __inline__
int drm_pci_device_is_agp(struct drm_device
*dev
)
1672 if (dev
->driver
->device_is_agp
!= NULL
) {
1673 int err
= (*dev
->driver
->device_is_agp
) (dev
);
1680 return pci_find_capability(dev
->pdev
, PCI_CAP_ID_AGP
);
1682 void drm_pci_agp_destroy(struct drm_device
*dev
);
1684 extern int drm_pci_init(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1685 extern void drm_pci_exit(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1686 extern int drm_get_pci_dev(struct pci_dev
*pdev
,
1687 const struct pci_device_id
*ent
,
1688 struct drm_driver
*driver
);
1690 #define DRM_PCIE_SPEED_25 1
1691 #define DRM_PCIE_SPEED_50 2
1692 #define DRM_PCIE_SPEED_80 4
1694 extern int drm_pcie_get_speed_cap_mask(struct drm_device
*dev
, u32
*speed_mask
);
1696 /* platform section */
1697 extern int drm_platform_init(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1699 /* returns true if currently okay to sleep */
1700 static __inline__
bool drm_can_sleep(void)
1702 if (in_atomic() || in_dbg_master() || irqs_disabled())
1707 #endif /* __KERNEL__ */