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 #define DRIVER_BUS_PCI 0x1
147 #define DRIVER_BUS_PLATFORM 0x2
148 #define DRIVER_BUS_USB 0x3
149 #define DRIVER_BUS_HOST1X 0x4
151 /***********************************************************************/
152 /** \name Begin the DRM... */
155 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
156 also include looping detection. */
158 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
159 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
160 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
162 #define DRM_MAP_HASH_OFFSET 0x10000000
166 /***********************************************************************/
167 /** \name Macros to make printk easier */
173 * \param fmt printf() like format string.
174 * \param arg arguments
176 #define DRM_ERROR(fmt, ...) \
177 drm_err(__func__, fmt, ##__VA_ARGS__)
180 * Rate limited error output. Like DRM_ERROR() but won't flood the log.
182 * \param fmt printf() like format string.
183 * \param arg arguments
185 #define DRM_ERROR_RATELIMITED(fmt, ...) \
187 static DEFINE_RATELIMIT_STATE(_rs, \
188 DEFAULT_RATELIMIT_INTERVAL, \
189 DEFAULT_RATELIMIT_BURST); \
191 if (__ratelimit(&_rs)) \
192 drm_err(__func__, fmt, ##__VA_ARGS__); \
195 #define DRM_INFO(fmt, ...) \
196 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
198 #define DRM_INFO_ONCE(fmt, ...) \
199 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
204 * \param fmt printf() like format string.
205 * \param arg arguments
208 #define DRM_DEBUG(fmt, args...) \
210 if (unlikely(drm_debug & DRM_UT_CORE)) \
211 drm_ut_debug_printk(__func__, fmt, ##args); \
214 #define DRM_DEBUG_DRIVER(fmt, args...) \
216 if (unlikely(drm_debug & DRM_UT_DRIVER)) \
217 drm_ut_debug_printk(__func__, fmt, ##args); \
219 #define DRM_DEBUG_KMS(fmt, args...) \
221 if (unlikely(drm_debug & DRM_UT_KMS)) \
222 drm_ut_debug_printk(__func__, fmt, ##args); \
224 #define DRM_DEBUG_PRIME(fmt, args...) \
226 if (unlikely(drm_debug & DRM_UT_PRIME)) \
227 drm_ut_debug_printk(__func__, fmt, ##args); \
230 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
231 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
232 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
233 #define DRM_DEBUG(fmt, arg...) do { } while (0)
238 /***********************************************************************/
239 /** \name Internal types and structures */
242 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
244 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
247 * Test that the hardware lock is held by the caller, returning otherwise.
249 * \param dev DRM device.
250 * \param filp file pointer of the caller.
252 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
254 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
255 _file_priv->master->lock.file_priv != _file_priv) { \
256 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
257 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
258 _file_priv->master->lock.file_priv, _file_priv); \
264 * Ioctl function type.
266 * \param inode device inode.
267 * \param file_priv DRM file private pointer.
268 * \param cmd command.
269 * \param arg argument.
271 typedef int drm_ioctl_t(struct drm_device
*dev
, void *data
,
272 struct drm_file
*file_priv
);
274 typedef int drm_ioctl_compat_t(struct file
*filp
, unsigned int cmd
,
277 #define DRM_IOCTL_NR(n) _IOC_NR(n)
278 #define DRM_MAJOR 226
281 #define DRM_MASTER 0x2
282 #define DRM_ROOT_ONLY 0x4
283 #define DRM_CONTROL_ALLOW 0x8
284 #define DRM_UNLOCKED 0x10
285 #define DRM_RENDER_ALLOW 0x20
287 struct drm_ioctl_desc
{
291 unsigned int cmd_drv
;
296 * Creates a driver or general drm_ioctl_desc array entry for the given
297 * ioctl, for use by drm_ioctl().
300 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
301 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
303 struct drm_magic_entry
{
304 struct list_head head
;
305 struct drm_hash_item hash_item
;
306 struct drm_file
*priv
;
309 struct drm_vma_entry
{
310 struct list_head head
;
311 struct vm_area_struct
*vma
;
319 int idx
; /**< Index into master buflist */
320 int total
; /**< Buffer size */
321 int order
; /**< log-base-2(total) */
322 int used
; /**< Amount of buffer in use (for DMA) */
323 unsigned long offset
; /**< Byte offset (used internally) */
324 void *address
; /**< Address of buffer */
325 unsigned long bus_address
; /**< Bus address of buffer */
326 struct drm_buf
*next
; /**< Kernel-only: used for free list */
327 __volatile__
int waiting
; /**< On kernel DMA queue */
328 __volatile__
int pending
; /**< On hardware DMA queue */
329 struct drm_file
*file_priv
; /**< Private of holding file descr */
330 int context
; /**< Kernel queue for this buffer */
331 int while_locked
; /**< Dispatch this buffer while locked */
339 } list
; /**< Which list we're on */
341 int dev_priv_size
; /**< Size of buffer private storage */
342 void *dev_private
; /**< Per-buffer private storage */
345 /** bufs is one longer than it has to be */
346 struct drm_waitlist
{
347 int count
; /**< Number of possible buffers */
348 struct drm_buf
**bufs
; /**< List of pointers to buffers */
349 struct drm_buf
**rp
; /**< Read pointer */
350 struct drm_buf
**wp
; /**< Write pointer */
351 struct drm_buf
**end
; /**< End pointer */
352 spinlock_t read_lock
;
353 spinlock_t write_lock
;
356 struct drm_freelist
{
357 int initialized
; /**< Freelist in use */
358 atomic_t count
; /**< Number of free buffers */
359 struct drm_buf
*next
; /**< End pointer */
361 wait_queue_head_t waiting
; /**< Processes waiting on free bufs */
362 int low_mark
; /**< Low water mark */
363 int high_mark
; /**< High water mark */
364 atomic_t wfh
; /**< If waiting for high mark */
368 typedef struct drm_dma_handle
{
375 * Buffer entry. There is one of this for each buffer size order.
377 struct drm_buf_entry
{
378 int buf_size
; /**< size */
379 int buf_count
; /**< number of buffers */
380 struct drm_buf
*buflist
; /**< buffer list */
383 struct drm_dma_handle
**seglist
;
385 struct drm_freelist freelist
;
388 /* Event queued up for userspace to read */
389 struct drm_pending_event
{
390 struct drm_event
*event
;
391 struct list_head link
;
392 struct drm_file
*file_priv
;
393 pid_t pid
; /* pid of requester, no guarantee it's valid by the time
394 we deliver the event, for tracing only */
395 void (*destroy
)(struct drm_pending_event
*event
);
398 /* initial implementaton using a linked list - todo hashtab */
399 struct drm_prime_file_private
{
400 struct list_head head
;
404 /** File private data */
406 unsigned always_authenticated
:1;
407 unsigned authenticated
:1;
408 /* Whether we're master for a minor. Protected by master_mutex */
409 unsigned is_master
:1;
410 /* true when the client has asked us to expose stereo 3D mode flags */
411 unsigned stereo_allowed
:1;
416 struct list_head lhead
;
417 struct drm_minor
*minor
;
418 unsigned long lock_count
;
420 /** Mapping of mm object handles to object pointers. */
421 struct idr object_idr
;
422 /** Lock for synchronization of access to object_idr. */
423 spinlock_t table_lock
;
428 struct drm_master
*master
; /* master this node is currently associated with
429 N.B. not always minor->master */
431 * fbs - List of framebuffers associated with this file.
433 * Protected by fbs_lock. Note that the fbs list holds a reference on
434 * the fb object to prevent it from untimely disappearing.
436 struct list_head fbs
;
437 struct mutex fbs_lock
;
439 wait_queue_head_t event_wait
;
440 struct list_head event_list
;
443 struct drm_prime_file_private prime
;
448 atomic_t use_count
; /**< Outstanding uses (+1) */
449 atomic_t finalization
; /**< Finalization in progress */
450 atomic_t block_count
; /**< Count of processes waiting */
451 atomic_t block_read
; /**< Queue blocked for reads */
452 wait_queue_head_t read_queue
; /**< Processes waiting on block_read */
453 atomic_t block_write
; /**< Queue blocked for writes */
454 wait_queue_head_t write_queue
; /**< Processes waiting on block_write */
455 atomic_t total_queued
; /**< Total queued statistic */
456 atomic_t total_flushed
; /**< Total flushes statistic */
457 atomic_t total_locks
; /**< Total locks statistics */
458 enum drm_ctx_flags flags
; /**< Context preserving and 2D-only */
459 struct drm_waitlist waitlist
; /**< Pending buffers */
460 wait_queue_head_t flush_queue
; /**< Processes waiting until flush */
466 struct drm_lock_data
{
467 struct drm_hw_lock
*hw_lock
; /**< Hardware lock */
468 /** Private of lock holder's file (NULL=kernel) */
469 struct drm_file
*file_priv
;
470 wait_queue_head_t lock_queue
; /**< Queue of blocked processes */
471 unsigned long lock_time
; /**< Time of last lock in jiffies */
473 uint32_t kernel_waiters
;
474 uint32_t user_waiters
;
481 struct drm_device_dma
{
483 struct drm_buf_entry bufs
[DRM_MAX_ORDER
+ 1]; /**< buffers, grouped by their size order */
484 int buf_count
; /**< total number of buffers */
485 struct drm_buf
**buflist
; /**< Vector of pointers into drm_device_dma::bufs */
487 int page_count
; /**< number of pages */
488 unsigned long *pagelist
; /**< page list */
489 unsigned long byte_count
;
491 _DRM_DMA_USE_AGP
= 0x01,
492 _DRM_DMA_USE_SG
= 0x02,
493 _DRM_DMA_USE_FB
= 0x04,
494 _DRM_DMA_USE_PCI_RO
= 0x08
500 * AGP memory entry. Stored as a doubly linked list.
503 unsigned long handle
; /**< handle */
504 struct agp_memory
*memory
;
505 unsigned long bound
; /**< address */
507 struct list_head head
;
513 * \sa drm_agp_init() and drm_device::agp.
515 struct drm_agp_head
{
516 struct agp_kern_info agp_info
; /**< AGP device information */
517 struct list_head memory
;
518 unsigned long mode
; /**< AGP mode */
519 struct agp_bridge_data
*bridge
;
520 int enabled
; /**< whether the AGP bus as been enabled */
521 int acquired
; /**< whether the AGP device has been acquired */
524 int cant_use_aperture
;
525 unsigned long page_mask
;
529 * Scatter-gather memory.
532 unsigned long handle
;
535 struct page
**pagelist
;
541 struct drm_hw_lock
*lock
;
546 * Kernel side of a mapping
548 struct drm_local_map
{
549 resource_size_t offset
; /**< Requested physical address (0 for SAREA)*/
550 unsigned long size
; /**< Requested physical size (bytes) */
551 enum drm_map_type type
; /**< Type of memory to map */
552 enum drm_map_flags flags
; /**< Flags */
553 void *handle
; /**< User-space: "Handle" to pass to mmap() */
554 /**< Kernel-space: kernel-virtual address */
555 int mtrr
; /**< MTRR slot used */
558 typedef struct drm_local_map drm_local_map_t
;
563 struct drm_map_list
{
564 struct list_head head
; /**< list head */
565 struct drm_hash_item hash
;
566 struct drm_local_map
*map
; /**< mapping */
568 struct drm_master
*master
;
572 * Context handle list
574 struct drm_ctx_list
{
575 struct list_head head
; /**< list head */
576 drm_context_t handle
; /**< context handle */
577 struct drm_file
*tag
; /**< associated fd private data */
580 /* location of GART table */
581 #define DRM_ATI_GART_MAIN 1
582 #define DRM_ATI_GART_FB 2
584 #define DRM_ATI_GART_PCI 1
585 #define DRM_ATI_GART_PCIE 2
586 #define DRM_ATI_GART_IGP 3
588 struct drm_ati_pcigart_info
{
589 int gart_table_location
;
593 dma_addr_t table_mask
;
594 struct drm_dma_handle
*table_handle
;
595 struct drm_local_map mapping
;
600 * This structure defines the drm_mm memory object, which will be used by the
601 * DRM for its buffer objects.
603 struct drm_gem_object
{
604 /** Reference count of this object */
605 struct kref refcount
;
608 * handle_count - gem file_priv handle count of this object
610 * Each handle also holds a reference. Note that when the handle_count
611 * drops to 0 any global names (e.g. the id in the flink namespace) will
614 * Protected by dev->object_name_lock.
616 unsigned handle_count
;
618 /** Related drm device */
619 struct drm_device
*dev
;
621 /** File representing the shmem storage */
624 /* Mapping info for this object */
625 struct drm_vma_offset_node vma_node
;
628 * Size of the object, in bytes. Immutable over the object's
634 * Global name for this object, starts at 1. 0 means unnamed.
635 * Access is covered by the object_name_lock in the related drm_device
640 * Memory domains. These monitor which caches contain read/write data
641 * related to the object. When transitioning from one set of domains
642 * to another, the driver is called to ensure that caches are suitably
643 * flushed and invalidated
645 uint32_t read_domains
;
646 uint32_t write_domain
;
649 * While validating an exec operation, the
650 * new read/write domain values are computed here.
651 * They will be transferred to the above values
652 * at the point that any cache flushing occurs
654 uint32_t pending_read_domains
;
655 uint32_t pending_write_domain
;
658 * dma_buf - dma buf associated with this GEM object
660 * Pointer to the dma-buf associated with this gem object (either
661 * through importing or exporting). We break the resulting reference
662 * loop when the last gem handle for this object is released.
664 * Protected by obj->object_name_lock
666 struct dma_buf
*dma_buf
;
669 * import_attach - dma buf attachment backing this object
671 * Any foreign dma_buf imported as a gem object has this set to the
672 * attachment point for the device. This is invariant over the lifetime
675 * The driver's ->gem_free_object callback is responsible for cleaning
676 * up the dma_buf attachment and references acquired at import time.
678 * Note that the drm gem/prime core does not depend upon drivers setting
679 * this field any more. So for drivers where this doesn't make sense
680 * (e.g. virtual devices or a displaylink behind an usb bus) they can
681 * simply leave it as NULL.
683 struct dma_buf_attachment
*import_attach
;
686 #include <drm/drm_crtc.h>
689 * struct drm_master - drm master structure
691 * @refcount: Refcount for this master object.
692 * @minor: Link back to minor char device we are master for. Immutable.
693 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
694 * @unique_len: Length of unique field. Protected by drm_global_mutex.
695 * @unique_size: Amount allocated. Protected by drm_global_mutex.
696 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex.
697 * @magicfree: List of used authentication tokens. Protected by struct_mutex.
698 * @lock: DRI lock information.
699 * @driver_priv: Pointer to driver-private information.
702 struct kref refcount
;
703 struct drm_minor
*minor
;
707 struct drm_open_hash magiclist
;
708 struct list_head magicfree
;
709 struct drm_lock_data lock
;
713 /* Size of ringbuffer for vblank timestamps. Just double-buffer
714 * in initial implementation.
716 #define DRM_VBLANKTIME_RBSIZE 2
718 /* Flags and return codes for get_vblank_timestamp() driver function. */
719 #define DRM_CALLED_FROM_VBLIRQ 1
720 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
721 #define DRM_VBLANKTIME_INVBL (1 << 1)
723 /* get_scanout_position() return flags */
724 #define DRM_SCANOUTPOS_VALID (1 << 0)
725 #define DRM_SCANOUTPOS_INVBL (1 << 1)
726 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
730 int (*get_irq
)(struct drm_device
*dev
);
731 const char *(*get_name
)(struct drm_device
*dev
);
732 int (*set_busid
)(struct drm_device
*dev
, struct drm_master
*master
);
733 int (*set_unique
)(struct drm_device
*dev
, struct drm_master
*master
,
734 struct drm_unique
*unique
);
735 int (*irq_by_busid
)(struct drm_device
*dev
, struct drm_irq_busid
*p
);
739 * DRM driver structure. This structure represent the common code for
740 * a family of cards. There will one drm_device for each card present
744 int (*load
) (struct drm_device
*, unsigned long flags
);
745 int (*firstopen
) (struct drm_device
*);
746 int (*open
) (struct drm_device
*, struct drm_file
*);
747 void (*preclose
) (struct drm_device
*, struct drm_file
*file_priv
);
748 void (*postclose
) (struct drm_device
*, struct drm_file
*);
749 void (*lastclose
) (struct drm_device
*);
750 int (*unload
) (struct drm_device
*);
751 int (*suspend
) (struct drm_device
*, pm_message_t state
);
752 int (*resume
) (struct drm_device
*);
753 int (*dma_ioctl
) (struct drm_device
*dev
, void *data
, struct drm_file
*file_priv
);
754 int (*dma_quiescent
) (struct drm_device
*);
755 int (*context_dtor
) (struct drm_device
*dev
, int context
);
758 * get_vblank_counter - get raw hardware vblank counter
760 * @crtc: counter to fetch
762 * Driver callback for fetching a raw hardware vblank counter for @crtc.
763 * If a device doesn't have a hardware counter, the driver can simply
764 * return the value of drm_vblank_count. The DRM core will account for
765 * missed vblank events while interrupts where disabled based on system
768 * Wraparound handling and loss of events due to modesetting is dealt
769 * with in the DRM core code.
772 * Raw vblank counter value.
774 u32 (*get_vblank_counter
) (struct drm_device
*dev
, int crtc
);
777 * enable_vblank - enable vblank interrupt events
779 * @crtc: which irq to enable
781 * Enable vblank interrupts for @crtc. If the device doesn't have
782 * a hardware vblank counter, this routine should be a no-op, since
783 * interrupts will have to stay on to keep the count accurate.
786 * Zero on success, appropriate errno if the given @crtc's vblank
787 * interrupt cannot be enabled.
789 int (*enable_vblank
) (struct drm_device
*dev
, int crtc
);
792 * disable_vblank - disable vblank interrupt events
794 * @crtc: which irq to enable
796 * Disable vblank interrupts for @crtc. If the device doesn't have
797 * a hardware vblank counter, this routine should be a no-op, since
798 * interrupts will have to stay on to keep the count accurate.
800 void (*disable_vblank
) (struct drm_device
*dev
, int crtc
);
803 * Called by \c drm_device_is_agp. Typically used to determine if a
804 * card is really attached to AGP or not.
806 * \param dev DRM device handle
809 * One of three values is returned depending on whether or not the
810 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
811 * (return of 1), or may or may not be AGP (return of 2).
813 int (*device_is_agp
) (struct drm_device
*dev
);
816 * Called by vblank timestamping code.
818 * Return the current display scanout position from a crtc, and an
819 * optional accurate ktime_get timestamp of when position was measured.
821 * \param dev DRM device.
822 * \param crtc Id of the crtc to query.
823 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
824 * \param *vpos Target location for current vertical scanout position.
825 * \param *hpos Target location for current horizontal scanout position.
826 * \param *stime Target location for timestamp taken immediately before
827 * scanout position query. Can be NULL to skip timestamp.
828 * \param *etime Target location for timestamp taken immediately after
829 * scanout position query. Can be NULL to skip timestamp.
831 * Returns vpos as a positive number while in active scanout area.
832 * Returns vpos as a negative number inside vblank, counting the number
833 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
834 * until start of active scanout / end of vblank."
836 * \return Flags, or'ed together as follows:
838 * DRM_SCANOUTPOS_VALID = Query successful.
839 * DRM_SCANOUTPOS_INVBL = Inside vblank.
840 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
841 * this flag means that returned position may be offset by a constant
842 * but unknown small number of scanlines wrt. real scanout position.
845 int (*get_scanout_position
) (struct drm_device
*dev
, int crtc
,
847 int *vpos
, int *hpos
, ktime_t
*stime
,
851 * Called by \c drm_get_last_vbltimestamp. Should return a precise
852 * timestamp when the most recent VBLANK interval ended or will end.
854 * Specifically, the timestamp in @vblank_time should correspond as
855 * closely as possible to the time when the first video scanline of
856 * the video frame after the end of VBLANK will start scanning out,
857 * the time immediately after end of the VBLANK interval. If the
858 * @crtc is currently inside VBLANK, this will be a time in the future.
859 * If the @crtc is currently scanning out a frame, this will be the
860 * past start time of the current scanout. This is meant to adhere
861 * to the OpenML OML_sync_control extension specification.
863 * \param dev dev DRM device handle.
864 * \param crtc crtc for which timestamp should be returned.
865 * \param *max_error Maximum allowable timestamp error in nanoseconds.
866 * Implementation should strive to provide timestamp
867 * with an error of at most *max_error nanoseconds.
868 * Returns true upper bound on error for timestamp.
869 * \param *vblank_time Target location for returned vblank timestamp.
870 * \param flags 0 = Defaults, no special treatment needed.
871 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
872 * irq handler. Some drivers need to apply some workarounds
873 * for gpu-specific vblank irq quirks if flag is set.
876 * Zero if timestamping isn't supported in current display mode or a
877 * negative number on failure. A positive status code on success,
878 * which describes how the vblank_time timestamp was computed.
880 int (*get_vblank_timestamp
) (struct drm_device
*dev
, int crtc
,
882 struct timeval
*vblank_time
,
885 /* these have to be filled in */
887 irqreturn_t(*irq_handler
) (int irq
, void *arg
);
888 void (*irq_preinstall
) (struct drm_device
*dev
);
889 int (*irq_postinstall
) (struct drm_device
*dev
);
890 void (*irq_uninstall
) (struct drm_device
*dev
);
892 /* Master routines */
893 int (*master_create
)(struct drm_device
*dev
, struct drm_master
*master
);
894 void (*master_destroy
)(struct drm_device
*dev
, struct drm_master
*master
);
896 * master_set is called whenever the minor master is set.
897 * master_drop is called whenever the minor master is dropped.
900 int (*master_set
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
902 void (*master_drop
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
905 int (*debugfs_init
)(struct drm_minor
*minor
);
906 void (*debugfs_cleanup
)(struct drm_minor
*minor
);
909 * Driver-specific constructor for drm_gem_objects, to set up
910 * obj->driver_private.
912 * Returns 0 on success.
914 void (*gem_free_object
) (struct drm_gem_object
*obj
);
915 int (*gem_open_object
) (struct drm_gem_object
*, struct drm_file
*);
916 void (*gem_close_object
) (struct drm_gem_object
*, struct drm_file
*);
919 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
920 int (*prime_handle_to_fd
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
921 uint32_t handle
, uint32_t flags
, int *prime_fd
);
922 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
923 int (*prime_fd_to_handle
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
924 int prime_fd
, uint32_t *handle
);
925 /* export GEM -> dmabuf */
926 struct dma_buf
* (*gem_prime_export
)(struct drm_device
*dev
,
927 struct drm_gem_object
*obj
, int flags
);
928 /* import dmabuf -> GEM */
929 struct drm_gem_object
* (*gem_prime_import
)(struct drm_device
*dev
,
930 struct dma_buf
*dma_buf
);
931 /* low-level interface used by drm_gem_prime_{import,export} */
932 int (*gem_prime_pin
)(struct drm_gem_object
*obj
);
933 void (*gem_prime_unpin
)(struct drm_gem_object
*obj
);
934 struct sg_table
*(*gem_prime_get_sg_table
)(struct drm_gem_object
*obj
);
935 struct drm_gem_object
*(*gem_prime_import_sg_table
)(
936 struct drm_device
*dev
, size_t size
,
937 struct sg_table
*sgt
);
938 void *(*gem_prime_vmap
)(struct drm_gem_object
*obj
);
939 void (*gem_prime_vunmap
)(struct drm_gem_object
*obj
, void *vaddr
);
940 int (*gem_prime_mmap
)(struct drm_gem_object
*obj
,
941 struct vm_area_struct
*vma
);
943 /* vga arb irq handler */
944 void (*vgaarb_irq
)(struct drm_device
*dev
, bool state
);
946 /* dumb alloc support */
947 int (*dumb_create
)(struct drm_file
*file_priv
,
948 struct drm_device
*dev
,
949 struct drm_mode_create_dumb
*args
);
950 int (*dumb_map_offset
)(struct drm_file
*file_priv
,
951 struct drm_device
*dev
, uint32_t handle
,
953 int (*dumb_destroy
)(struct drm_file
*file_priv
,
954 struct drm_device
*dev
,
957 /* Driver private ops for this object */
958 const struct vm_operations_struct
*gem_vm_ops
;
969 const struct drm_ioctl_desc
*ioctls
;
971 const struct file_operations
*fops
;
973 struct pci_driver
*pci
;
974 struct platform_device
*platform_device
;
975 struct usb_driver
*usb
;
979 /* List of devices hanging off this driver with stealth attach. */
980 struct list_head legacy_dev_list
;
983 enum drm_minor_type
{
991 * Info file list entry. This structure represents a debugfs or proc file to
992 * be created by the drm core
994 struct drm_info_list
{
995 const char *name
; /** file name */
996 int (*show
)(struct seq_file
*, void*); /** show callback */
997 u32 driver_features
; /**< Required driver features for this entry */
1002 * debugfs node structure. This structure represents a debugfs file.
1004 struct drm_info_node
{
1005 struct list_head list
;
1006 struct drm_minor
*minor
;
1007 const struct drm_info_list
*info_ent
;
1008 struct dentry
*dent
;
1012 * DRM minor structure. This structure represents a drm minor number.
1015 int index
; /**< Minor device number */
1016 int type
; /**< Control or render */
1017 struct device
*kdev
; /**< Linux device */
1018 struct drm_device
*dev
;
1020 struct dentry
*debugfs_root
;
1022 struct list_head debugfs_list
;
1023 struct mutex debugfs_lock
; /* Protects debugfs_list. */
1025 /* currently active master for this node. Protected by master_mutex */
1026 struct drm_master
*master
;
1027 struct drm_mode_group mode_group
;
1031 struct drm_pending_vblank_event
{
1032 struct drm_pending_event base
;
1034 struct drm_event_vblank event
;
1037 struct drm_vblank_crtc
{
1038 wait_queue_head_t queue
; /**< VBLANK wait queue */
1039 struct timeval time
[DRM_VBLANKTIME_RBSIZE
]; /**< timestamp of current count */
1040 atomic_t count
; /**< number of VBLANK interrupts */
1041 atomic_t refcount
; /* number of users of vblank interruptsper crtc */
1042 u32 last
; /* protected by dev->vbl_lock, used */
1043 /* for wraparound handling */
1044 u32 last_wait
; /* Last vblank seqno waited per CRTC */
1045 unsigned int inmodeset
; /* Display driver is setting mode */
1046 bool enabled
; /* so we don't call enable more than
1051 * DRM device structure. This structure represent a complete card that
1052 * may contain multiple heads.
1055 struct list_head legacy_dev_list
;/**< list of devices per driver for stealth attach cleanup */
1056 char *devname
; /**< For /proc/interrupts */
1057 int if_version
; /**< Highest interface version set */
1059 /** \name Lifetime Management */
1061 struct kref ref
; /**< Object ref-count */
1062 struct device
*dev
; /**< Device structure of bus-device */
1063 struct drm_driver
*driver
; /**< DRM driver managing the device */
1064 void *dev_private
; /**< DRM driver private data */
1065 struct drm_minor
*control
; /**< Control node */
1066 struct drm_minor
*primary
; /**< Primary node */
1067 struct drm_minor
*render
; /**< Render node */
1068 atomic_t unplugged
; /**< Flag whether dev is dead */
1069 struct inode
*anon_inode
; /**< inode for private address-space */
1074 spinlock_t count_lock
; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1075 struct mutex struct_mutex
; /**< For others */
1076 struct mutex master_mutex
; /**< For drm_minor::master and drm_file::is_master */
1079 /** \name Usage Counters */
1081 int open_count
; /**< Outstanding files open */
1082 int buf_use
; /**< Buffers in use -- cannot alloc */
1083 atomic_t buf_alloc
; /**< Buffer allocation in progress */
1086 struct list_head filelist
;
1088 /** \name Memory management */
1090 struct list_head maplist
; /**< Linked list of regions */
1091 struct drm_open_hash map_hash
; /**< User token hash table for maps */
1093 /** \name Context handle management */
1095 struct list_head ctxlist
; /**< Linked list of context handles */
1096 struct mutex ctxlist_mutex
; /**< For ctxlist */
1100 struct list_head vmalist
; /**< List of vmas (for debugging) */
1104 /** \name DMA support */
1106 struct drm_device_dma
*dma
; /**< Optional pointer for DMA support */
1109 /** \name Context support */
1111 bool irq_enabled
; /**< True if irq handler is enabled */
1112 __volatile__
long context_flag
; /**< Context swapping flag */
1113 int last_context
; /**< Last current context */
1116 /** \name VBLANK IRQ support */
1120 * At load time, disabling the vblank interrupt won't be allowed since
1121 * old clients may not call the modeset ioctl and therefore misbehave.
1122 * Once the modeset ioctl *has* been called though, we can safely
1123 * disable them when unused.
1125 bool vblank_disable_allowed
;
1127 /* array of size num_crtcs */
1128 struct drm_vblank_crtc
*vblank
;
1130 spinlock_t vblank_time_lock
; /**< Protects vblank count and time updates during vblank enable/disable */
1131 spinlock_t vbl_lock
;
1132 struct timer_list vblank_disable_timer
;
1134 u32 max_vblank_count
; /**< size of vblank counter register */
1139 struct list_head vblank_event_list
;
1140 spinlock_t event_lock
;
1144 struct drm_agp_head
*agp
; /**< AGP data */
1146 struct pci_dev
*pdev
; /**< PCI device structure */
1148 struct pci_controller
*hose
;
1151 struct platform_device
*platformdev
; /**< Platform device struture */
1152 struct usb_device
*usbdev
;
1154 struct drm_sg_mem
*sg
; /**< Scatter gather memory */
1155 unsigned int num_crtcs
; /**< Number of CRTCs on this device */
1156 struct drm_sigdata sigdata
; /**< For block_all_signals */
1159 struct drm_local_map
*agp_buffer_map
;
1160 unsigned int agp_buffer_token
;
1162 struct drm_mode_config mode_config
; /**< Current mode config */
1164 /** \name GEM information */
1166 struct mutex object_name_lock
;
1167 struct idr object_name_idr
;
1168 struct drm_vma_offset_manager
*vma_offset_manager
;
1170 int switch_power_state
;
1173 #define DRM_SWITCH_POWER_ON 0
1174 #define DRM_SWITCH_POWER_OFF 1
1175 #define DRM_SWITCH_POWER_CHANGING 2
1176 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3
1178 static __inline__
int drm_core_check_feature(struct drm_device
*dev
,
1181 return ((dev
->driver
->driver_features
& feature
) ? 1 : 0);
1184 static inline int drm_dev_to_irq(struct drm_device
*dev
)
1186 return dev
->driver
->bus
->get_irq(dev
);
1189 static inline void drm_device_set_unplugged(struct drm_device
*dev
)
1192 atomic_set(&dev
->unplugged
, 1);
1195 static inline int drm_device_is_unplugged(struct drm_device
*dev
)
1197 int ret
= atomic_read(&dev
->unplugged
);
1202 static inline bool drm_modeset_is_locked(struct drm_device
*dev
)
1204 return mutex_is_locked(&dev
->mode_config
.mutex
);
1207 static inline bool drm_is_render_client(const struct drm_file
*file_priv
)
1209 return file_priv
->minor
->type
== DRM_MINOR_RENDER
;
1212 static inline bool drm_is_control_client(const struct drm_file
*file_priv
)
1214 return file_priv
->minor
->type
== DRM_MINOR_CONTROL
;
1217 static inline bool drm_is_primary_client(const struct drm_file
*file_priv
)
1219 return file_priv
->minor
->type
== DRM_MINOR_LEGACY
;
1222 /******************************************************************/
1223 /** \name Internal function definitions */
1226 /* Driver support (drm_drv.h) */
1227 extern long drm_ioctl(struct file
*filp
,
1228 unsigned int cmd
, unsigned long arg
);
1229 extern long drm_compat_ioctl(struct file
*filp
,
1230 unsigned int cmd
, unsigned long arg
);
1231 extern int drm_lastclose(struct drm_device
*dev
);
1233 /* Device support (drm_fops.h) */
1234 extern struct mutex drm_global_mutex
;
1235 extern int drm_open(struct inode
*inode
, struct file
*filp
);
1236 extern int drm_stub_open(struct inode
*inode
, struct file
*filp
);
1237 extern ssize_t
drm_read(struct file
*filp
, char __user
*buffer
,
1238 size_t count
, loff_t
*offset
);
1239 extern int drm_release(struct inode
*inode
, struct file
*filp
);
1241 /* Mapping support (drm_vm.h) */
1242 extern int drm_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1243 extern int drm_mmap_locked(struct file
*filp
, struct vm_area_struct
*vma
);
1244 extern void drm_vm_open_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1245 extern void drm_vm_close_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1246 extern unsigned int drm_poll(struct file
*filp
, struct poll_table_struct
*wait
);
1248 /* Memory management support (drm_memory.h) */
1249 #include <drm/drm_memory.h>
1252 /* Misc. IOCTL support (drm_ioctl.h) */
1253 extern int drm_irq_by_busid(struct drm_device
*dev
, void *data
,
1254 struct drm_file
*file_priv
);
1255 extern int drm_getunique(struct drm_device
*dev
, void *data
,
1256 struct drm_file
*file_priv
);
1257 extern int drm_setunique(struct drm_device
*dev
, void *data
,
1258 struct drm_file
*file_priv
);
1259 extern int drm_getmap(struct drm_device
*dev
, void *data
,
1260 struct drm_file
*file_priv
);
1261 extern int drm_getclient(struct drm_device
*dev
, void *data
,
1262 struct drm_file
*file_priv
);
1263 extern int drm_getstats(struct drm_device
*dev
, void *data
,
1264 struct drm_file
*file_priv
);
1265 extern int drm_getcap(struct drm_device
*dev
, void *data
,
1266 struct drm_file
*file_priv
);
1267 extern int drm_setclientcap(struct drm_device
*dev
, void *data
,
1268 struct drm_file
*file_priv
);
1269 extern int drm_setversion(struct drm_device
*dev
, void *data
,
1270 struct drm_file
*file_priv
);
1271 extern int drm_noop(struct drm_device
*dev
, void *data
,
1272 struct drm_file
*file_priv
);
1274 /* Context IOCTL support (drm_context.h) */
1275 extern int drm_resctx(struct drm_device
*dev
, void *data
,
1276 struct drm_file
*file_priv
);
1277 extern int drm_addctx(struct drm_device
*dev
, void *data
,
1278 struct drm_file
*file_priv
);
1279 extern int drm_getctx(struct drm_device
*dev
, void *data
,
1280 struct drm_file
*file_priv
);
1281 extern int drm_switchctx(struct drm_device
*dev
, void *data
,
1282 struct drm_file
*file_priv
);
1283 extern int drm_newctx(struct drm_device
*dev
, void *data
,
1284 struct drm_file
*file_priv
);
1285 extern int drm_rmctx(struct drm_device
*dev
, void *data
,
1286 struct drm_file
*file_priv
);
1288 extern int drm_ctxbitmap_init(struct drm_device
*dev
);
1289 extern void drm_ctxbitmap_cleanup(struct drm_device
*dev
);
1290 extern void drm_ctxbitmap_free(struct drm_device
*dev
, int ctx_handle
);
1292 extern int drm_setsareactx(struct drm_device
*dev
, void *data
,
1293 struct drm_file
*file_priv
);
1294 extern int drm_getsareactx(struct drm_device
*dev
, void *data
,
1295 struct drm_file
*file_priv
);
1297 /* Authentication IOCTL support (drm_auth.h) */
1298 extern int drm_getmagic(struct drm_device
*dev
, void *data
,
1299 struct drm_file
*file_priv
);
1300 extern int drm_authmagic(struct drm_device
*dev
, void *data
,
1301 struct drm_file
*file_priv
);
1302 extern int drm_remove_magic(struct drm_master
*master
, drm_magic_t magic
);
1304 /* Cache management (drm_cache.c) */
1305 void drm_clflush_pages(struct page
*pages
[], unsigned long num_pages
);
1306 void drm_clflush_sg(struct sg_table
*st
);
1307 void drm_clflush_virt_range(char *addr
, unsigned long length
);
1309 /* Locking IOCTL support (drm_lock.h) */
1310 extern int drm_lock(struct drm_device
*dev
, void *data
,
1311 struct drm_file
*file_priv
);
1312 extern int drm_unlock(struct drm_device
*dev
, void *data
,
1313 struct drm_file
*file_priv
);
1314 extern int drm_lock_free(struct drm_lock_data
*lock_data
, unsigned int context
);
1315 extern void drm_idlelock_take(struct drm_lock_data
*lock_data
);
1316 extern void drm_idlelock_release(struct drm_lock_data
*lock_data
);
1319 * These are exported to drivers so that they can implement fencing using
1320 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1323 extern int drm_i_have_hw_lock(struct drm_device
*dev
, struct drm_file
*file_priv
);
1325 /* Buffer management support (drm_bufs.h) */
1326 extern int drm_addbufs_agp(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1327 extern int drm_addbufs_pci(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1328 extern int drm_addmap(struct drm_device
*dev
, resource_size_t offset
,
1329 unsigned int size
, enum drm_map_type type
,
1330 enum drm_map_flags flags
, struct drm_local_map
**map_ptr
);
1331 extern int drm_addmap_ioctl(struct drm_device
*dev
, void *data
,
1332 struct drm_file
*file_priv
);
1333 extern int drm_rmmap(struct drm_device
*dev
, struct drm_local_map
*map
);
1334 extern int drm_rmmap_locked(struct drm_device
*dev
, struct drm_local_map
*map
);
1335 extern int drm_rmmap_ioctl(struct drm_device
*dev
, void *data
,
1336 struct drm_file
*file_priv
);
1337 extern int drm_addbufs(struct drm_device
*dev
, void *data
,
1338 struct drm_file
*file_priv
);
1339 extern int drm_infobufs(struct drm_device
*dev
, void *data
,
1340 struct drm_file
*file_priv
);
1341 extern int drm_markbufs(struct drm_device
*dev
, void *data
,
1342 struct drm_file
*file_priv
);
1343 extern int drm_freebufs(struct drm_device
*dev
, void *data
,
1344 struct drm_file
*file_priv
);
1345 extern int drm_mapbufs(struct drm_device
*dev
, void *data
,
1346 struct drm_file
*file_priv
);
1347 extern int drm_dma_ioctl(struct drm_device
*dev
, void *data
,
1348 struct drm_file
*file_priv
);
1350 /* DMA support (drm_dma.h) */
1351 extern int drm_legacy_dma_setup(struct drm_device
*dev
);
1352 extern void drm_legacy_dma_takedown(struct drm_device
*dev
);
1353 extern void drm_free_buffer(struct drm_device
*dev
, struct drm_buf
* buf
);
1354 extern void drm_core_reclaim_buffers(struct drm_device
*dev
,
1355 struct drm_file
*filp
);
1357 /* IRQ support (drm_irq.h) */
1358 extern int drm_control(struct drm_device
*dev
, void *data
,
1359 struct drm_file
*file_priv
);
1360 extern int drm_irq_install(struct drm_device
*dev
);
1361 extern int drm_irq_uninstall(struct drm_device
*dev
);
1363 extern int drm_vblank_init(struct drm_device
*dev
, int num_crtcs
);
1364 extern int drm_wait_vblank(struct drm_device
*dev
, void *data
,
1365 struct drm_file
*filp
);
1366 extern u32
drm_vblank_count(struct drm_device
*dev
, int crtc
);
1367 extern u32
drm_vblank_count_and_time(struct drm_device
*dev
, int crtc
,
1368 struct timeval
*vblanktime
);
1369 extern void drm_send_vblank_event(struct drm_device
*dev
, int crtc
,
1370 struct drm_pending_vblank_event
*e
);
1371 extern bool drm_handle_vblank(struct drm_device
*dev
, int crtc
);
1372 extern int drm_vblank_get(struct drm_device
*dev
, int crtc
);
1373 extern void drm_vblank_put(struct drm_device
*dev
, int crtc
);
1374 extern void drm_vblank_off(struct drm_device
*dev
, int crtc
);
1375 extern void drm_vblank_cleanup(struct drm_device
*dev
);
1376 extern u32
drm_get_last_vbltimestamp(struct drm_device
*dev
, int crtc
,
1377 struct timeval
*tvblank
, unsigned flags
);
1378 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device
*dev
,
1379 int crtc
, int *max_error
,
1380 struct timeval
*vblank_time
,
1382 const struct drm_crtc
*refcrtc
,
1383 const struct drm_display_mode
*mode
);
1384 extern void drm_calc_timestamping_constants(struct drm_crtc
*crtc
,
1385 const struct drm_display_mode
*mode
);
1388 /* Modesetting support */
1389 extern void drm_vblank_pre_modeset(struct drm_device
*dev
, int crtc
);
1390 extern void drm_vblank_post_modeset(struct drm_device
*dev
, int crtc
);
1391 extern int drm_modeset_ctl(struct drm_device
*dev
, void *data
,
1392 struct drm_file
*file_priv
);
1394 /* AGP/GART support (drm_agpsupport.h) */
1396 #include <drm/drm_agpsupport.h>
1398 /* Stub support (drm_stub.h) */
1399 extern int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
1400 struct drm_file
*file_priv
);
1401 extern int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
1402 struct drm_file
*file_priv
);
1403 struct drm_master
*drm_master_create(struct drm_minor
*minor
);
1404 extern struct drm_master
*drm_master_get(struct drm_master
*master
);
1405 extern void drm_master_put(struct drm_master
**master
);
1407 extern void drm_put_dev(struct drm_device
*dev
);
1408 extern void drm_unplug_dev(struct drm_device
*dev
);
1409 extern unsigned int drm_debug
;
1410 extern unsigned int drm_rnodes
;
1412 extern unsigned int drm_vblank_offdelay
;
1413 extern unsigned int drm_timestamp_precision
;
1414 extern unsigned int drm_timestamp_monotonic
;
1416 extern struct class *drm_class
;
1417 extern struct dentry
*drm_debugfs_root
;
1419 extern struct idr drm_minors_idr
;
1421 extern struct drm_local_map
*drm_getsarea(struct drm_device
*dev
);
1423 /* Debugfs support */
1424 #if defined(CONFIG_DEBUG_FS)
1425 extern int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1426 struct dentry
*root
);
1427 extern int drm_debugfs_create_files(const struct drm_info_list
*files
,
1428 int count
, struct dentry
*root
,
1429 struct drm_minor
*minor
);
1430 extern int drm_debugfs_remove_files(const struct drm_info_list
*files
,
1431 int count
, struct drm_minor
*minor
);
1432 extern int drm_debugfs_cleanup(struct drm_minor
*minor
);
1434 static inline int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1435 struct dentry
*root
)
1440 static inline int drm_debugfs_create_files(const struct drm_info_list
*files
,
1441 int count
, struct dentry
*root
,
1442 struct drm_minor
*minor
)
1447 static inline int drm_debugfs_remove_files(const struct drm_info_list
*files
,
1448 int count
, struct drm_minor
*minor
)
1453 static inline int drm_debugfs_cleanup(struct drm_minor
*minor
)
1459 /* Info file support */
1460 extern int drm_name_info(struct seq_file
*m
, void *data
);
1461 extern int drm_vm_info(struct seq_file
*m
, void *data
);
1462 extern int drm_bufs_info(struct seq_file
*m
, void *data
);
1463 extern int drm_vblank_info(struct seq_file
*m
, void *data
);
1464 extern int drm_clients_info(struct seq_file
*m
, void* data
);
1465 extern int drm_gem_name_info(struct seq_file
*m
, void *data
);
1468 extern struct dma_buf
*drm_gem_prime_export(struct drm_device
*dev
,
1469 struct drm_gem_object
*obj
, int flags
);
1470 extern int drm_gem_prime_handle_to_fd(struct drm_device
*dev
,
1471 struct drm_file
*file_priv
, uint32_t handle
, uint32_t flags
,
1473 extern struct drm_gem_object
*drm_gem_prime_import(struct drm_device
*dev
,
1474 struct dma_buf
*dma_buf
);
1475 extern int drm_gem_prime_fd_to_handle(struct drm_device
*dev
,
1476 struct drm_file
*file_priv
, int prime_fd
, uint32_t *handle
);
1477 extern void drm_gem_dmabuf_release(struct dma_buf
*dma_buf
);
1479 extern int drm_prime_handle_to_fd_ioctl(struct drm_device
*dev
, void *data
,
1480 struct drm_file
*file_priv
);
1481 extern int drm_prime_fd_to_handle_ioctl(struct drm_device
*dev
, void *data
,
1482 struct drm_file
*file_priv
);
1484 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table
*sgt
, struct page
**pages
,
1485 dma_addr_t
*addrs
, int max_pages
);
1486 extern struct sg_table
*drm_prime_pages_to_sg(struct page
**pages
, int nr_pages
);
1487 extern void drm_prime_gem_destroy(struct drm_gem_object
*obj
, struct sg_table
*sg
);
1489 int drm_gem_dumb_destroy(struct drm_file
*file
,
1490 struct drm_device
*dev
,
1493 void drm_prime_init_file_private(struct drm_prime_file_private
*prime_fpriv
);
1494 void drm_prime_destroy_file_private(struct drm_prime_file_private
*prime_fpriv
);
1495 void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
);
1498 extern int drm_vma_info(struct seq_file
*m
, void *data
);
1501 /* Scatter Gather Support (drm_scatter.h) */
1502 extern void drm_legacy_sg_cleanup(struct drm_device
*dev
);
1503 extern int drm_sg_alloc(struct drm_device
*dev
, void *data
,
1504 struct drm_file
*file_priv
);
1505 extern int drm_sg_free(struct drm_device
*dev
, void *data
,
1506 struct drm_file
*file_priv
);
1508 /* ATI PCIGART support (ati_pcigart.h) */
1509 extern int drm_ati_pcigart_init(struct drm_device
*dev
,
1510 struct drm_ati_pcigart_info
* gart_info
);
1511 extern int drm_ati_pcigart_cleanup(struct drm_device
*dev
,
1512 struct drm_ati_pcigart_info
* gart_info
);
1514 extern drm_dma_handle_t
*drm_pci_alloc(struct drm_device
*dev
, size_t size
,
1516 extern void __drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1517 extern void drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1519 /* sysfs support (drm_sysfs.c) */
1520 struct drm_sysfs_class
;
1521 extern struct class *drm_sysfs_create(struct module
*owner
, char *name
);
1522 extern void drm_sysfs_destroy(void);
1523 extern int drm_sysfs_device_add(struct drm_minor
*minor
);
1524 extern void drm_sysfs_hotplug_event(struct drm_device
*dev
);
1525 extern void drm_sysfs_device_remove(struct drm_minor
*minor
);
1526 extern int drm_sysfs_connector_add(struct drm_connector
*connector
);
1527 extern void drm_sysfs_connector_remove(struct drm_connector
*connector
);
1529 /* Graphics Execution Manager library functions (drm_gem.c) */
1530 int drm_gem_init(struct drm_device
*dev
);
1531 void drm_gem_destroy(struct drm_device
*dev
);
1532 void drm_gem_object_release(struct drm_gem_object
*obj
);
1533 void drm_gem_object_free(struct kref
*kref
);
1534 int drm_gem_object_init(struct drm_device
*dev
,
1535 struct drm_gem_object
*obj
, size_t size
);
1536 void drm_gem_private_object_init(struct drm_device
*dev
,
1537 struct drm_gem_object
*obj
, size_t size
);
1538 void drm_gem_vm_open(struct vm_area_struct
*vma
);
1539 void drm_gem_vm_close(struct vm_area_struct
*vma
);
1540 int drm_gem_mmap_obj(struct drm_gem_object
*obj
, unsigned long obj_size
,
1541 struct vm_area_struct
*vma
);
1542 int drm_gem_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1544 #include <drm/drm_global.h>
1547 drm_gem_object_reference(struct drm_gem_object
*obj
)
1549 kref_get(&obj
->refcount
);
1553 drm_gem_object_unreference(struct drm_gem_object
*obj
)
1556 kref_put(&obj
->refcount
, drm_gem_object_free
);
1560 drm_gem_object_unreference_unlocked(struct drm_gem_object
*obj
)
1562 if (obj
&& !atomic_add_unless(&obj
->refcount
.refcount
, -1, 1)) {
1563 struct drm_device
*dev
= obj
->dev
;
1565 mutex_lock(&dev
->struct_mutex
);
1566 if (likely(atomic_dec_and_test(&obj
->refcount
.refcount
)))
1567 drm_gem_object_free(&obj
->refcount
);
1568 mutex_unlock(&dev
->struct_mutex
);
1572 int drm_gem_handle_create_tail(struct drm_file
*file_priv
,
1573 struct drm_gem_object
*obj
,
1575 int drm_gem_handle_create(struct drm_file
*file_priv
,
1576 struct drm_gem_object
*obj
,
1578 int drm_gem_handle_delete(struct drm_file
*filp
, u32 handle
);
1581 void drm_gem_free_mmap_offset(struct drm_gem_object
*obj
);
1582 int drm_gem_create_mmap_offset(struct drm_gem_object
*obj
);
1583 int drm_gem_create_mmap_offset_size(struct drm_gem_object
*obj
, size_t size
);
1585 struct page
**drm_gem_get_pages(struct drm_gem_object
*obj
, gfp_t gfpmask
);
1586 void drm_gem_put_pages(struct drm_gem_object
*obj
, struct page
**pages
,
1587 bool dirty
, bool accessed
);
1589 struct drm_gem_object
*drm_gem_object_lookup(struct drm_device
*dev
,
1590 struct drm_file
*filp
,
1592 int drm_gem_close_ioctl(struct drm_device
*dev
, void *data
,
1593 struct drm_file
*file_priv
);
1594 int drm_gem_flink_ioctl(struct drm_device
*dev
, void *data
,
1595 struct drm_file
*file_priv
);
1596 int drm_gem_open_ioctl(struct drm_device
*dev
, void *data
,
1597 struct drm_file
*file_priv
);
1598 void drm_gem_open(struct drm_device
*dev
, struct drm_file
*file_private
);
1599 void drm_gem_release(struct drm_device
*dev
, struct drm_file
*file_private
);
1601 extern void drm_core_ioremap(struct drm_local_map
*map
, struct drm_device
*dev
);
1602 extern void drm_core_ioremap_wc(struct drm_local_map
*map
, struct drm_device
*dev
);
1603 extern void drm_core_ioremapfree(struct drm_local_map
*map
, struct drm_device
*dev
);
1605 static __inline__
struct drm_local_map
*drm_core_findmap(struct drm_device
*dev
,
1608 struct drm_map_list
*_entry
;
1609 list_for_each_entry(_entry
, &dev
->maplist
, head
)
1610 if (_entry
->user_token
== token
)
1615 static __inline__
void drm_core_dropmap(struct drm_local_map
*map
)
1619 #include <drm/drm_mem_util.h>
1621 struct drm_device
*drm_dev_alloc(struct drm_driver
*driver
,
1622 struct device
*parent
);
1623 void drm_dev_ref(struct drm_device
*dev
);
1624 void drm_dev_unref(struct drm_device
*dev
);
1625 int drm_dev_register(struct drm_device
*dev
, unsigned long flags
);
1626 void drm_dev_unregister(struct drm_device
*dev
);
1628 struct drm_minor
*drm_minor_acquire(unsigned int minor_id
);
1629 void drm_minor_release(struct drm_minor
*minor
);
1634 static __inline__
int drm_pci_device_is_agp(struct drm_device
*dev
)
1636 if (dev
->driver
->device_is_agp
!= NULL
) {
1637 int err
= (*dev
->driver
->device_is_agp
) (dev
);
1644 return pci_find_capability(dev
->pdev
, PCI_CAP_ID_AGP
);
1646 void drm_pci_agp_destroy(struct drm_device
*dev
);
1648 extern int drm_pci_init(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1649 extern void drm_pci_exit(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1650 extern int drm_get_pci_dev(struct pci_dev
*pdev
,
1651 const struct pci_device_id
*ent
,
1652 struct drm_driver
*driver
);
1654 #define DRM_PCIE_SPEED_25 1
1655 #define DRM_PCIE_SPEED_50 2
1656 #define DRM_PCIE_SPEED_80 4
1658 extern int drm_pcie_get_speed_cap_mask(struct drm_device
*dev
, u32
*speed_mask
);
1660 /* platform section */
1661 extern int drm_platform_init(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1663 /* returns true if currently okay to sleep */
1664 static __inline__
bool drm_can_sleep(void)
1666 if (in_atomic() || in_dbg_master() || irqs_disabled())
1671 #endif /* __KERNEL__ */