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 #if defined(__alpha__) || defined(__powerpc__)
60 #include <asm/pgtable.h> /* For pte_wrprotect */
63 #include <asm/uaccess.h>
64 #include <linux/types.h>
65 #include <linux/agp_backend.h>
66 #include <linux/workqueue.h>
67 #include <linux/poll.h>
68 #include <asm/pgalloc.h>
70 #include <drm/drm_sarea.h>
71 #include <drm/drm_vma_manager.h>
73 #include <linux/idr.h>
75 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
85 #include <drm/drm_os_linux.h>
86 #include <drm/drm_hashtab.h>
87 #include <drm/drm_mm.h>
89 #define DRM_UT_CORE 0x01
90 #define DRM_UT_DRIVER 0x02
91 #define DRM_UT_KMS 0x04
92 #define DRM_UT_PRIME 0x08
94 * Three debug levels are defined.
95 * drm_core, drm_driver, drm_kms
96 * drm_core level can be used in the generic drm code. For example:
97 * drm_ioctl, drm_mm, drm_memory
98 * The macro definition of DRM_DEBUG is used.
99 * DRM_DEBUG(fmt, args...)
100 * The debug info by using the DRM_DEBUG can be obtained by adding
101 * the boot option of "drm.debug=1".
103 * drm_driver level can be used in the specific drm driver. It is used
104 * to add the debug info related with the drm driver. For example:
105 * i915_drv, i915_dma, i915_gem, radeon_drv,
106 * The macro definition of DRM_DEBUG_DRIVER can be used.
107 * DRM_DEBUG_DRIVER(fmt, args...)
108 * The debug info by using the DRM_DEBUG_DRIVER can be obtained by
109 * adding the boot option of "drm.debug=0x02"
111 * drm_kms level can be used in the KMS code related with specific drm driver.
112 * It is used to add the debug info related with KMS mode. For example:
113 * the connector/crtc ,
114 * The macro definition of DRM_DEBUG_KMS can be used.
115 * DRM_DEBUG_KMS(fmt, args...)
116 * The debug info by using the DRM_DEBUG_KMS can be obtained by
117 * adding the boot option of "drm.debug=0x04"
119 * If we add the boot option of "drm.debug=0x06", we can get the debug info by
120 * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
121 * If we add the boot option of "drm.debug=0x05", we can get the debug info by
122 * using the DRM_DEBUG_KMS and DRM_DEBUG.
125 extern __printf(4, 5)
126 void drm_ut_debug_printk(unsigned int request_level
,
128 const char *function_name
,
129 const char *format
, ...);
130 extern __printf(2, 3)
131 int drm_err(const char *func
, const char *format
, ...);
133 /***********************************************************************/
134 /** \name DRM template customization defaults */
137 /* driver capabilities and requirements mask */
138 #define DRIVER_USE_AGP 0x1
139 #define DRIVER_REQUIRE_AGP 0x2
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
149 #define DRIVER_BUS_PCI 0x1
150 #define DRIVER_BUS_PLATFORM 0x2
151 #define DRIVER_BUS_USB 0x3
153 /***********************************************************************/
154 /** \name Begin the DRM... */
157 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
158 also include looping detection. */
160 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
161 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
162 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
164 #define DRM_MAP_HASH_OFFSET 0x10000000
168 /***********************************************************************/
169 /** \name Macros to make printk easier */
175 * \param fmt printf() like format string.
176 * \param arg arguments
178 #define DRM_ERROR(fmt, ...) \
179 drm_err(__func__, fmt, ##__VA_ARGS__)
181 #define DRM_INFO(fmt, ...) \
182 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
187 * \param fmt printf() like format string.
188 * \param arg arguments
191 #define DRM_DEBUG(fmt, args...) \
193 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
194 __func__, fmt, ##args); \
197 #define DRM_DEBUG_DRIVER(fmt, args...) \
199 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
200 __func__, fmt, ##args); \
202 #define DRM_DEBUG_KMS(fmt, args...) \
204 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
205 __func__, fmt, ##args); \
207 #define DRM_DEBUG_PRIME(fmt, args...) \
209 drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME, \
210 __func__, fmt, ##args); \
212 #define DRM_LOG(fmt, args...) \
214 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
215 NULL, fmt, ##args); \
217 #define DRM_LOG_KMS(fmt, args...) \
219 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
220 NULL, fmt, ##args); \
222 #define DRM_LOG_MODE(fmt, args...) \
224 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
225 NULL, fmt, ##args); \
227 #define DRM_LOG_DRIVER(fmt, args...) \
229 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
230 NULL, fmt, ##args); \
233 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
234 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
235 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
236 #define DRM_DEBUG(fmt, arg...) do { } while (0)
237 #define DRM_LOG(fmt, arg...) do { } while (0)
238 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
239 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
240 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
246 /***********************************************************************/
247 /** \name Internal types and structures */
250 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
252 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
255 * Test that the hardware lock is held by the caller, returning otherwise.
257 * \param dev DRM device.
258 * \param filp file pointer of the caller.
260 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
262 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
263 _file_priv->master->lock.file_priv != _file_priv) { \
264 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
265 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
266 _file_priv->master->lock.file_priv, _file_priv); \
272 * Ioctl function type.
274 * \param inode device inode.
275 * \param file_priv DRM file private pointer.
276 * \param cmd command.
277 * \param arg argument.
279 typedef int drm_ioctl_t(struct drm_device
*dev
, void *data
,
280 struct drm_file
*file_priv
);
282 typedef int drm_ioctl_compat_t(struct file
*filp
, unsigned int cmd
,
285 #define DRM_IOCTL_NR(n) _IOC_NR(n)
286 #define DRM_MAJOR 226
289 #define DRM_MASTER 0x2
290 #define DRM_ROOT_ONLY 0x4
291 #define DRM_CONTROL_ALLOW 0x8
292 #define DRM_UNLOCKED 0x10
294 struct drm_ioctl_desc
{
298 unsigned int cmd_drv
;
303 * Creates a driver or general drm_ioctl_desc array entry for the given
304 * ioctl, for use by drm_ioctl().
307 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
308 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
310 struct drm_magic_entry
{
311 struct list_head head
;
312 struct drm_hash_item hash_item
;
313 struct drm_file
*priv
;
316 struct drm_vma_entry
{
317 struct list_head head
;
318 struct vm_area_struct
*vma
;
326 int idx
; /**< Index into master buflist */
327 int total
; /**< Buffer size */
328 int order
; /**< log-base-2(total) */
329 int used
; /**< Amount of buffer in use (for DMA) */
330 unsigned long offset
; /**< Byte offset (used internally) */
331 void *address
; /**< Address of buffer */
332 unsigned long bus_address
; /**< Bus address of buffer */
333 struct drm_buf
*next
; /**< Kernel-only: used for free list */
334 __volatile__
int waiting
; /**< On kernel DMA queue */
335 __volatile__
int pending
; /**< On hardware DMA queue */
336 struct drm_file
*file_priv
; /**< Private of holding file descr */
337 int context
; /**< Kernel queue for this buffer */
338 int while_locked
; /**< Dispatch this buffer while locked */
346 } list
; /**< Which list we're on */
348 int dev_priv_size
; /**< Size of buffer private storage */
349 void *dev_private
; /**< Per-buffer private storage */
352 /** bufs is one longer than it has to be */
353 struct drm_waitlist
{
354 int count
; /**< Number of possible buffers */
355 struct drm_buf
**bufs
; /**< List of pointers to buffers */
356 struct drm_buf
**rp
; /**< Read pointer */
357 struct drm_buf
**wp
; /**< Write pointer */
358 struct drm_buf
**end
; /**< End pointer */
359 spinlock_t read_lock
;
360 spinlock_t write_lock
;
363 struct drm_freelist
{
364 int initialized
; /**< Freelist in use */
365 atomic_t count
; /**< Number of free buffers */
366 struct drm_buf
*next
; /**< End pointer */
368 wait_queue_head_t waiting
; /**< Processes waiting on free bufs */
369 int low_mark
; /**< Low water mark */
370 int high_mark
; /**< High water mark */
371 atomic_t wfh
; /**< If waiting for high mark */
375 typedef struct drm_dma_handle
{
382 * Buffer entry. There is one of this for each buffer size order.
384 struct drm_buf_entry
{
385 int buf_size
; /**< size */
386 int buf_count
; /**< number of buffers */
387 struct drm_buf
*buflist
; /**< buffer list */
390 struct drm_dma_handle
**seglist
;
392 struct drm_freelist freelist
;
395 /* Event queued up for userspace to read */
396 struct drm_pending_event
{
397 struct drm_event
*event
;
398 struct list_head link
;
399 struct drm_file
*file_priv
;
400 pid_t pid
; /* pid of requester, no guarantee it's valid by the time
401 we deliver the event, for tracing only */
402 void (*destroy
)(struct drm_pending_event
*event
);
405 /* initial implementaton using a linked list - todo hashtab */
406 struct drm_prime_file_private
{
407 struct list_head head
;
411 /** File private data */
417 unsigned long ioctl_count
;
418 struct list_head lhead
;
419 struct drm_minor
*minor
;
420 unsigned long lock_count
;
422 /** Mapping of mm object handles to object pointers. */
423 struct idr object_idr
;
424 /** Lock for synchronization of access to object_idr. */
425 spinlock_t table_lock
;
430 int is_master
; /* this file private is a master for a minor */
431 struct drm_master
*master
; /* master this node is currently associated with
432 N.B. not always minor->master */
435 * fbs - List of framebuffers associated with this file.
437 * Protected by fbs_lock. Note that the fbs list holds a reference on
438 * the fb object to prevent it from untimely disappearing.
440 struct list_head fbs
;
441 struct mutex fbs_lock
;
443 wait_queue_head_t event_wait
;
444 struct list_head event_list
;
447 struct drm_prime_file_private prime
;
452 atomic_t use_count
; /**< Outstanding uses (+1) */
453 atomic_t finalization
; /**< Finalization in progress */
454 atomic_t block_count
; /**< Count of processes waiting */
455 atomic_t block_read
; /**< Queue blocked for reads */
456 wait_queue_head_t read_queue
; /**< Processes waiting on block_read */
457 atomic_t block_write
; /**< Queue blocked for writes */
458 wait_queue_head_t write_queue
; /**< Processes waiting on block_write */
459 atomic_t total_queued
; /**< Total queued statistic */
460 atomic_t total_flushed
; /**< Total flushes statistic */
461 atomic_t total_locks
; /**< Total locks statistics */
462 enum drm_ctx_flags flags
; /**< Context preserving and 2D-only */
463 struct drm_waitlist waitlist
; /**< Pending buffers */
464 wait_queue_head_t flush_queue
; /**< Processes waiting until flush */
470 struct drm_lock_data
{
471 struct drm_hw_lock
*hw_lock
; /**< Hardware lock */
472 /** Private of lock holder's file (NULL=kernel) */
473 struct drm_file
*file_priv
;
474 wait_queue_head_t lock_queue
; /**< Queue of blocked processes */
475 unsigned long lock_time
; /**< Time of last lock in jiffies */
477 uint32_t kernel_waiters
;
478 uint32_t user_waiters
;
485 struct drm_device_dma
{
487 struct drm_buf_entry bufs
[DRM_MAX_ORDER
+ 1]; /**< buffers, grouped by their size order */
488 int buf_count
; /**< total number of buffers */
489 struct drm_buf
**buflist
; /**< Vector of pointers into drm_device_dma::bufs */
491 int page_count
; /**< number of pages */
492 unsigned long *pagelist
; /**< page list */
493 unsigned long byte_count
;
495 _DRM_DMA_USE_AGP
= 0x01,
496 _DRM_DMA_USE_SG
= 0x02,
497 _DRM_DMA_USE_FB
= 0x04,
498 _DRM_DMA_USE_PCI_RO
= 0x08
504 * AGP memory entry. Stored as a doubly linked list.
507 unsigned long handle
; /**< handle */
509 unsigned long bound
; /**< address */
511 struct list_head head
;
517 * \sa drm_agp_init() and drm_device::agp.
519 struct drm_agp_head
{
520 DRM_AGP_KERN agp_info
; /**< AGP device information */
521 struct list_head memory
;
522 unsigned long mode
; /**< AGP mode */
523 struct agp_bridge_data
*bridge
;
524 int enabled
; /**< whether the AGP bus as been enabled */
525 int acquired
; /**< whether the AGP device has been acquired */
528 int cant_use_aperture
;
529 unsigned long page_mask
;
533 * Scatter-gather memory.
536 unsigned long handle
;
539 struct page
**pagelist
;
545 struct drm_hw_lock
*lock
;
550 * Kernel side of a mapping
552 struct drm_local_map
{
553 resource_size_t offset
; /**< Requested physical address (0 for SAREA)*/
554 unsigned long size
; /**< Requested physical size (bytes) */
555 enum drm_map_type type
; /**< Type of memory to map */
556 enum drm_map_flags flags
; /**< Flags */
557 void *handle
; /**< User-space: "Handle" to pass to mmap() */
558 /**< Kernel-space: kernel-virtual address */
559 int mtrr
; /**< MTRR slot used */
562 typedef struct drm_local_map drm_local_map_t
;
567 struct drm_map_list
{
568 struct list_head head
; /**< list head */
569 struct drm_hash_item hash
;
570 struct drm_local_map
*map
; /**< mapping */
572 struct drm_master
*master
;
576 * Context handle list
578 struct drm_ctx_list
{
579 struct list_head head
; /**< list head */
580 drm_context_t handle
; /**< context handle */
581 struct drm_file
*tag
; /**< associated fd private data */
584 /* location of GART table */
585 #define DRM_ATI_GART_MAIN 1
586 #define DRM_ATI_GART_FB 2
588 #define DRM_ATI_GART_PCI 1
589 #define DRM_ATI_GART_PCIE 2
590 #define DRM_ATI_GART_IGP 3
592 struct drm_ati_pcigart_info
{
593 int gart_table_location
;
597 dma_addr_t table_mask
;
598 struct drm_dma_handle
*table_handle
;
599 struct drm_local_map mapping
;
604 * GEM specific mm private for tracking GEM objects
607 struct drm_vma_offset_manager vma_manager
;
611 * This structure defines the drm_mm memory object, which will be used by the
612 * DRM for its buffer objects.
614 struct drm_gem_object
{
615 /** Reference count of this object */
616 struct kref refcount
;
619 * handle_count - gem file_priv handle count of this object
621 * Each handle also holds a reference. Note that when the handle_count
622 * drops to 0 any global names (e.g. the id in the flink namespace) will
625 * Protected by dev->object_name_lock.
627 unsigned handle_count
;
629 /** Related drm device */
630 struct drm_device
*dev
;
632 /** File representing the shmem storage */
635 /* Mapping info for this object */
636 struct drm_vma_offset_node vma_node
;
639 * Size of the object, in bytes. Immutable over the object's
645 * Global name for this object, starts at 1. 0 means unnamed.
646 * Access is covered by the object_name_lock in the related drm_device
651 * Memory domains. These monitor which caches contain read/write data
652 * related to the object. When transitioning from one set of domains
653 * to another, the driver is called to ensure that caches are suitably
654 * flushed and invalidated
656 uint32_t read_domains
;
657 uint32_t write_domain
;
660 * While validating an exec operation, the
661 * new read/write domain values are computed here.
662 * They will be transferred to the above values
663 * at the point that any cache flushing occurs
665 uint32_t pending_read_domains
;
666 uint32_t pending_write_domain
;
668 void *driver_private
;
670 /* dma buf exported from this GEM object */
671 struct dma_buf
*export_dma_buf
;
674 * import_attach - dma buf attachment backing this object
676 * Any foreign dma_buf imported as a gem object has this set to the
677 * attachment point for the device. This is invariant over the lifetime
680 * The driver's ->gem_free_object callback is responsible for cleaning
681 * up the dma_buf attachment and references acquired at import time.
683 struct dma_buf_attachment
*import_attach
;
686 #include <drm/drm_crtc.h>
688 /* per-master structure */
691 struct kref refcount
; /* refcount for this master */
693 struct list_head head
; /**< each minor contains a list of masters */
694 struct drm_minor
*minor
; /**< link back to minor we are a master for */
696 char *unique
; /**< Unique identifier: e.g., busid */
697 int unique_len
; /**< Length of unique field */
698 int unique_size
; /**< amount allocated */
700 int blocked
; /**< Blocked due to VC switch? */
702 /** \name Authentication */
704 struct drm_open_hash magiclist
;
705 struct list_head magicfree
;
708 struct drm_lock_data lock
; /**< Information on hardware lock */
710 void *driver_priv
; /**< Private structure for driver to use */
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
);
736 /* hooks that are for PCI */
737 int (*agp_init
)(struct drm_device
*dev
);
738 void (*agp_destroy
)(struct drm_device
*dev
);
743 * DRM driver structure. This structure represent the common code for
744 * a family of cards. There will one drm_device for each card present
748 int (*load
) (struct drm_device
*, unsigned long flags
);
749 int (*firstopen
) (struct drm_device
*);
750 int (*open
) (struct drm_device
*, struct drm_file
*);
751 void (*preclose
) (struct drm_device
*, struct drm_file
*file_priv
);
752 void (*postclose
) (struct drm_device
*, struct drm_file
*);
753 void (*lastclose
) (struct drm_device
*);
754 int (*unload
) (struct drm_device
*);
755 int (*suspend
) (struct drm_device
*, pm_message_t state
);
756 int (*resume
) (struct drm_device
*);
757 int (*dma_ioctl
) (struct drm_device
*dev
, void *data
, struct drm_file
*file_priv
);
758 int (*dma_quiescent
) (struct drm_device
*);
759 int (*context_dtor
) (struct drm_device
*dev
, int context
);
762 * get_vblank_counter - get raw hardware vblank counter
764 * @crtc: counter to fetch
766 * Driver callback for fetching a raw hardware vblank counter for @crtc.
767 * If a device doesn't have a hardware counter, the driver can simply
768 * return the value of drm_vblank_count. The DRM core will account for
769 * missed vblank events while interrupts where disabled based on system
772 * Wraparound handling and loss of events due to modesetting is dealt
773 * with in the DRM core code.
776 * Raw vblank counter value.
778 u32 (*get_vblank_counter
) (struct drm_device
*dev
, int crtc
);
781 * enable_vblank - enable vblank interrupt events
783 * @crtc: which irq to enable
785 * Enable vblank interrupts for @crtc. If the device doesn't have
786 * a hardware vblank counter, this routine should be a no-op, since
787 * interrupts will have to stay on to keep the count accurate.
790 * Zero on success, appropriate errno if the given @crtc's vblank
791 * interrupt cannot be enabled.
793 int (*enable_vblank
) (struct drm_device
*dev
, int crtc
);
796 * disable_vblank - disable vblank interrupt events
798 * @crtc: which irq to enable
800 * Disable vblank interrupts for @crtc. If the device doesn't have
801 * a hardware vblank counter, this routine should be a no-op, since
802 * interrupts will have to stay on to keep the count accurate.
804 void (*disable_vblank
) (struct drm_device
*dev
, int crtc
);
807 * Called by \c drm_device_is_agp. Typically used to determine if a
808 * card is really attached to AGP or not.
810 * \param dev DRM device handle
813 * One of three values is returned depending on whether or not the
814 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
815 * (return of 1), or may or may not be AGP (return of 2).
817 int (*device_is_agp
) (struct drm_device
*dev
);
820 * Called by vblank timestamping code.
822 * Return the current display scanout position from a crtc.
824 * \param dev DRM device.
825 * \param crtc Id of the crtc to query.
826 * \param *vpos Target location for current vertical scanout position.
827 * \param *hpos Target location for current horizontal scanout position.
829 * Returns vpos as a positive number while in active scanout area.
830 * Returns vpos as a negative number inside vblank, counting the number
831 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
832 * until start of active scanout / end of vblank."
834 * \return Flags, or'ed together as follows:
836 * DRM_SCANOUTPOS_VALID = Query successful.
837 * DRM_SCANOUTPOS_INVBL = Inside vblank.
838 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
839 * this flag means that returned position may be offset by a constant
840 * but unknown small number of scanlines wrt. real scanout position.
843 int (*get_scanout_position
) (struct drm_device
*dev
, int crtc
,
844 int *vpos
, int *hpos
);
847 * Called by \c drm_get_last_vbltimestamp. Should return a precise
848 * timestamp when the most recent VBLANK interval ended or will end.
850 * Specifically, the timestamp in @vblank_time should correspond as
851 * closely as possible to the time when the first video scanline of
852 * the video frame after the end of VBLANK will start scanning out,
853 * the time immediately after end of the VBLANK interval. If the
854 * @crtc is currently inside VBLANK, this will be a time in the future.
855 * If the @crtc is currently scanning out a frame, this will be the
856 * past start time of the current scanout. This is meant to adhere
857 * to the OpenML OML_sync_control extension specification.
859 * \param dev dev DRM device handle.
860 * \param crtc crtc for which timestamp should be returned.
861 * \param *max_error Maximum allowable timestamp error in nanoseconds.
862 * Implementation should strive to provide timestamp
863 * with an error of at most *max_error nanoseconds.
864 * Returns true upper bound on error for timestamp.
865 * \param *vblank_time Target location for returned vblank timestamp.
866 * \param flags 0 = Defaults, no special treatment needed.
867 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
868 * irq handler. Some drivers need to apply some workarounds
869 * for gpu-specific vblank irq quirks if flag is set.
872 * Zero if timestamping isn't supported in current display mode or a
873 * negative number on failure. A positive status code on success,
874 * which describes how the vblank_time timestamp was computed.
876 int (*get_vblank_timestamp
) (struct drm_device
*dev
, int crtc
,
878 struct timeval
*vblank_time
,
881 /* these have to be filled in */
883 irqreturn_t(*irq_handler
) (DRM_IRQ_ARGS
);
884 void (*irq_preinstall
) (struct drm_device
*dev
);
885 int (*irq_postinstall
) (struct drm_device
*dev
);
886 void (*irq_uninstall
) (struct drm_device
*dev
);
888 /* Master routines */
889 int (*master_create
)(struct drm_device
*dev
, struct drm_master
*master
);
890 void (*master_destroy
)(struct drm_device
*dev
, struct drm_master
*master
);
892 * master_set is called whenever the minor master is set.
893 * master_drop is called whenever the minor master is dropped.
896 int (*master_set
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
898 void (*master_drop
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
901 int (*debugfs_init
)(struct drm_minor
*minor
);
902 void (*debugfs_cleanup
)(struct drm_minor
*minor
);
905 * Driver-specific constructor for drm_gem_objects, to set up
906 * obj->driver_private.
908 * Returns 0 on success.
910 int (*gem_init_object
) (struct drm_gem_object
*obj
);
911 void (*gem_free_object
) (struct drm_gem_object
*obj
);
912 int (*gem_open_object
) (struct drm_gem_object
*, struct drm_file
*);
913 void (*gem_close_object
) (struct drm_gem_object
*, struct drm_file
*);
916 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
917 int (*prime_handle_to_fd
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
918 uint32_t handle
, uint32_t flags
, int *prime_fd
);
919 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
920 int (*prime_fd_to_handle
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
921 int prime_fd
, uint32_t *handle
);
922 /* export GEM -> dmabuf */
923 struct dma_buf
* (*gem_prime_export
)(struct drm_device
*dev
,
924 struct drm_gem_object
*obj
, int flags
);
925 /* import dmabuf -> GEM */
926 struct drm_gem_object
* (*gem_prime_import
)(struct drm_device
*dev
,
927 struct dma_buf
*dma_buf
);
928 /* low-level interface used by drm_gem_prime_{import,export} */
929 int (*gem_prime_pin
)(struct drm_gem_object
*obj
);
930 void (*gem_prime_unpin
)(struct drm_gem_object
*obj
);
931 struct sg_table
*(*gem_prime_get_sg_table
)(struct drm_gem_object
*obj
);
932 struct drm_gem_object
*(*gem_prime_import_sg_table
)(
933 struct drm_device
*dev
, size_t size
,
934 struct sg_table
*sgt
);
935 void *(*gem_prime_vmap
)(struct drm_gem_object
*obj
);
936 void (*gem_prime_vunmap
)(struct drm_gem_object
*obj
, void *vaddr
);
937 int (*gem_prime_mmap
)(struct drm_gem_object
*obj
,
938 struct vm_area_struct
*vma
);
940 /* vga arb irq handler */
941 void (*vgaarb_irq
)(struct drm_device
*dev
, bool state
);
943 /* dumb alloc support */
944 int (*dumb_create
)(struct drm_file
*file_priv
,
945 struct drm_device
*dev
,
946 struct drm_mode_create_dumb
*args
);
947 int (*dumb_map_offset
)(struct drm_file
*file_priv
,
948 struct drm_device
*dev
, uint32_t handle
,
950 int (*dumb_destroy
)(struct drm_file
*file_priv
,
951 struct drm_device
*dev
,
954 /* Driver private ops for this object */
955 const struct vm_operations_struct
*gem_vm_ops
;
966 const struct drm_ioctl_desc
*ioctls
;
968 const struct file_operations
*fops
;
970 struct pci_driver
*pci
;
971 struct platform_device
*platform_device
;
972 struct usb_driver
*usb
;
976 /* List of devices hanging off this driver */
977 struct list_head device_list
;
980 #define DRM_MINOR_UNASSIGNED 0
981 #define DRM_MINOR_LEGACY 1
982 #define DRM_MINOR_CONTROL 2
983 #define DRM_MINOR_RENDER 3
987 * debugfs node list. This structure represents a debugfs file to
988 * be created by the drm core
990 struct drm_debugfs_list
{
991 const char *name
; /** file name */
992 int (*show
)(struct seq_file
*, void*); /** show callback */
993 u32 driver_features
; /**< Required driver features for this entry */
997 * debugfs node structure. This structure represents a debugfs file.
999 struct drm_debugfs_node
{
1000 struct list_head list
;
1001 struct drm_minor
*minor
;
1002 struct drm_debugfs_list
*debugfs_ent
;
1003 struct dentry
*dent
;
1007 * Info file list entry. This structure represents a debugfs or proc file to
1008 * be created by the drm core
1010 struct drm_info_list
{
1011 const char *name
; /** file name */
1012 int (*show
)(struct seq_file
*, void*); /** show callback */
1013 u32 driver_features
; /**< Required driver features for this entry */
1018 * debugfs node structure. This structure represents a debugfs file.
1020 struct drm_info_node
{
1021 struct list_head list
;
1022 struct drm_minor
*minor
;
1023 const struct drm_info_list
*info_ent
;
1024 struct dentry
*dent
;
1028 * DRM minor structure. This structure represents a drm minor number.
1031 int index
; /**< Minor device number */
1032 int type
; /**< Control or render */
1033 dev_t device
; /**< Device number for mknod */
1034 struct device kdev
; /**< Linux device */
1035 struct drm_device
*dev
;
1037 struct dentry
*debugfs_root
;
1039 struct list_head debugfs_list
;
1040 struct mutex debugfs_lock
; /* Protects debugfs_list. */
1042 struct drm_master
*master
; /* currently active master for this node */
1043 struct list_head master_list
;
1044 struct drm_mode_group mode_group
;
1047 /* mode specified on the command line */
1048 struct drm_cmdline_mode
{
1050 bool refresh_specified
;
1059 enum drm_connector_force force
;
1063 struct drm_pending_vblank_event
{
1064 struct drm_pending_event base
;
1066 struct drm_event_vblank event
;
1070 * DRM device structure. This structure represent a complete card that
1071 * may contain multiple heads.
1074 struct list_head driver_item
; /**< list of devices per driver */
1075 char *devname
; /**< For /proc/interrupts */
1076 int if_version
; /**< Highest interface version set */
1080 spinlock_t count_lock
; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1081 struct mutex struct_mutex
; /**< For others */
1084 /** \name Usage Counters */
1086 int open_count
; /**< Outstanding files open */
1087 atomic_t ioctl_count
; /**< Outstanding IOCTLs pending */
1088 atomic_t vma_count
; /**< Outstanding vma areas open */
1089 int buf_use
; /**< Buffers in use -- cannot alloc */
1090 atomic_t buf_alloc
; /**< Buffer allocation in progress */
1093 /** \name Performance counters */
1095 unsigned long counters
;
1096 enum drm_stat_type types
[15];
1097 atomic_t counts
[15];
1100 struct list_head filelist
;
1102 /** \name Memory management */
1104 struct list_head maplist
; /**< Linked list of regions */
1105 int map_count
; /**< Number of mappable regions */
1106 struct drm_open_hash map_hash
; /**< User token hash table for maps */
1108 /** \name Context handle management */
1110 struct list_head ctxlist
; /**< Linked list of context handles */
1111 int ctx_count
; /**< Number of context handles */
1112 struct mutex ctxlist_mutex
; /**< For ctxlist */
1116 struct list_head vmalist
; /**< List of vmas (for debugging) */
1120 /** \name DMA support */
1122 struct drm_device_dma
*dma
; /**< Optional pointer for DMA support */
1125 /** \name Context support */
1127 int irq_enabled
; /**< True if irq handler is enabled */
1128 __volatile__
long context_flag
; /**< Context swapping flag */
1129 int last_context
; /**< Last current context */
1132 struct work_struct work
;
1133 /** \name VBLANK IRQ support */
1137 * At load time, disabling the vblank interrupt won't be allowed since
1138 * old clients may not call the modeset ioctl and therefore misbehave.
1139 * Once the modeset ioctl *has* been called though, we can safely
1140 * disable them when unused.
1142 int vblank_disable_allowed
;
1144 wait_queue_head_t
*vbl_queue
; /**< VBLANK wait queue */
1145 atomic_t
*_vblank_count
; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1146 struct timeval
*_vblank_time
; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1147 spinlock_t vblank_time_lock
; /**< Protects vblank count and time updates during vblank enable/disable */
1148 spinlock_t vbl_lock
;
1149 atomic_t
*vblank_refcount
; /* number of users of vblank interruptsper crtc */
1150 u32
*last_vblank
; /* protected by dev->vbl_lock, used */
1151 /* for wraparound handling */
1152 int *vblank_enabled
; /* so we don't call enable more than
1154 int *vblank_inmodeset
; /* Display driver is setting mode */
1155 u32
*last_vblank_wait
; /* Last vblank seqno waited per CRTC */
1156 struct timer_list vblank_disable_timer
;
1158 u32 max_vblank_count
; /**< size of vblank counter register */
1163 struct list_head vblank_event_list
;
1164 spinlock_t event_lock
;
1168 struct drm_agp_head
*agp
; /**< AGP data */
1170 struct device
*dev
; /**< Device structure */
1171 struct pci_dev
*pdev
; /**< PCI device structure */
1172 int pci_vendor
; /**< PCI vendor id */
1173 int pci_device
; /**< PCI device id */
1175 struct pci_controller
*hose
;
1178 struct platform_device
*platformdev
; /**< Platform device struture */
1179 struct usb_device
*usbdev
;
1181 struct drm_sg_mem
*sg
; /**< Scatter gather memory */
1182 unsigned int num_crtcs
; /**< Number of CRTCs on this device */
1183 void *dev_private
; /**< device private data */
1185 struct address_space
*dev_mapping
;
1186 struct drm_sigdata sigdata
; /**< For block_all_signals */
1189 struct drm_driver
*driver
;
1190 struct drm_local_map
*agp_buffer_map
;
1191 unsigned int agp_buffer_token
;
1192 struct drm_minor
*control
; /**< Control node for card */
1193 struct drm_minor
*primary
; /**< render type primary screen head */
1195 struct drm_mode_config mode_config
; /**< Current mode config */
1197 /** \name GEM information */
1199 spinlock_t object_name_lock
;
1200 struct idr object_name_idr
;
1202 int switch_power_state
;
1204 atomic_t unplugged
; /* device has been unplugged or gone away */
1207 #define DRM_SWITCH_POWER_ON 0
1208 #define DRM_SWITCH_POWER_OFF 1
1209 #define DRM_SWITCH_POWER_CHANGING 2
1211 static __inline__
int drm_core_check_feature(struct drm_device
*dev
,
1214 return ((dev
->driver
->driver_features
& feature
) ? 1 : 0);
1217 static inline int drm_dev_to_irq(struct drm_device
*dev
)
1219 return dev
->driver
->bus
->get_irq(dev
);
1222 static inline void drm_device_set_unplugged(struct drm_device
*dev
)
1225 atomic_set(&dev
->unplugged
, 1);
1228 static inline int drm_device_is_unplugged(struct drm_device
*dev
)
1230 int ret
= atomic_read(&dev
->unplugged
);
1235 static inline bool drm_modeset_is_locked(struct drm_device
*dev
)
1237 return mutex_is_locked(&dev
->mode_config
.mutex
);
1240 /******************************************************************/
1241 /** \name Internal function definitions */
1244 /* Driver support (drm_drv.h) */
1245 extern long drm_ioctl(struct file
*filp
,
1246 unsigned int cmd
, unsigned long arg
);
1247 extern long drm_compat_ioctl(struct file
*filp
,
1248 unsigned int cmd
, unsigned long arg
);
1249 extern int drm_lastclose(struct drm_device
*dev
);
1251 /* Device support (drm_fops.h) */
1252 extern struct mutex drm_global_mutex
;
1253 extern int drm_open(struct inode
*inode
, struct file
*filp
);
1254 extern int drm_stub_open(struct inode
*inode
, struct file
*filp
);
1255 extern ssize_t
drm_read(struct file
*filp
, char __user
*buffer
,
1256 size_t count
, loff_t
*offset
);
1257 extern int drm_release(struct inode
*inode
, struct file
*filp
);
1259 /* Mapping support (drm_vm.h) */
1260 extern int drm_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1261 extern int drm_mmap_locked(struct file
*filp
, struct vm_area_struct
*vma
);
1262 extern void drm_vm_open_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1263 extern void drm_vm_close_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1264 extern unsigned int drm_poll(struct file
*filp
, struct poll_table_struct
*wait
);
1266 /* Memory management support (drm_memory.h) */
1267 #include <drm/drm_memory.h>
1269 /* Misc. IOCTL support (drm_ioctl.h) */
1270 extern int drm_irq_by_busid(struct drm_device
*dev
, void *data
,
1271 struct drm_file
*file_priv
);
1272 extern int drm_getunique(struct drm_device
*dev
, void *data
,
1273 struct drm_file
*file_priv
);
1274 extern int drm_setunique(struct drm_device
*dev
, void *data
,
1275 struct drm_file
*file_priv
);
1276 extern int drm_getmap(struct drm_device
*dev
, void *data
,
1277 struct drm_file
*file_priv
);
1278 extern int drm_getclient(struct drm_device
*dev
, void *data
,
1279 struct drm_file
*file_priv
);
1280 extern int drm_getstats(struct drm_device
*dev
, void *data
,
1281 struct drm_file
*file_priv
);
1282 extern int drm_getcap(struct drm_device
*dev
, void *data
,
1283 struct drm_file
*file_priv
);
1284 extern int drm_setversion(struct drm_device
*dev
, void *data
,
1285 struct drm_file
*file_priv
);
1286 extern int drm_noop(struct drm_device
*dev
, void *data
,
1287 struct drm_file
*file_priv
);
1289 /* Context IOCTL support (drm_context.h) */
1290 extern int drm_resctx(struct drm_device
*dev
, void *data
,
1291 struct drm_file
*file_priv
);
1292 extern int drm_addctx(struct drm_device
*dev
, void *data
,
1293 struct drm_file
*file_priv
);
1294 extern int drm_getctx(struct drm_device
*dev
, void *data
,
1295 struct drm_file
*file_priv
);
1296 extern int drm_switchctx(struct drm_device
*dev
, void *data
,
1297 struct drm_file
*file_priv
);
1298 extern int drm_newctx(struct drm_device
*dev
, void *data
,
1299 struct drm_file
*file_priv
);
1300 extern int drm_rmctx(struct drm_device
*dev
, void *data
,
1301 struct drm_file
*file_priv
);
1303 extern void drm_legacy_ctxbitmap_init(struct drm_device
*dev
);
1304 extern void drm_legacy_ctxbitmap_cleanup(struct drm_device
*dev
);
1305 extern void drm_legacy_ctxbitmap_release(struct drm_device
*dev
,
1306 struct drm_file
*file_priv
);
1308 extern int drm_setsareactx(struct drm_device
*dev
, void *data
,
1309 struct drm_file
*file_priv
);
1310 extern int drm_getsareactx(struct drm_device
*dev
, void *data
,
1311 struct drm_file
*file_priv
);
1313 /* Authentication IOCTL support (drm_auth.h) */
1314 extern int drm_getmagic(struct drm_device
*dev
, void *data
,
1315 struct drm_file
*file_priv
);
1316 extern int drm_authmagic(struct drm_device
*dev
, void *data
,
1317 struct drm_file
*file_priv
);
1318 extern int drm_remove_magic(struct drm_master
*master
, drm_magic_t magic
);
1320 /* Cache management (drm_cache.c) */
1321 void drm_clflush_pages(struct page
*pages
[], unsigned long num_pages
);
1322 void drm_clflush_sg(struct sg_table
*st
);
1323 void drm_clflush_virt_range(char *addr
, unsigned long length
);
1325 /* Locking IOCTL support (drm_lock.h) */
1326 extern int drm_lock(struct drm_device
*dev
, void *data
,
1327 struct drm_file
*file_priv
);
1328 extern int drm_unlock(struct drm_device
*dev
, void *data
,
1329 struct drm_file
*file_priv
);
1330 extern int drm_lock_free(struct drm_lock_data
*lock_data
, unsigned int context
);
1331 extern void drm_idlelock_take(struct drm_lock_data
*lock_data
);
1332 extern void drm_idlelock_release(struct drm_lock_data
*lock_data
);
1335 * These are exported to drivers so that they can implement fencing using
1336 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1339 extern int drm_i_have_hw_lock(struct drm_device
*dev
, struct drm_file
*file_priv
);
1341 /* Buffer management support (drm_bufs.h) */
1342 extern int drm_addbufs_agp(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1343 extern int drm_addbufs_pci(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1344 extern int drm_addmap(struct drm_device
*dev
, resource_size_t offset
,
1345 unsigned int size
, enum drm_map_type type
,
1346 enum drm_map_flags flags
, struct drm_local_map
**map_ptr
);
1347 extern int drm_addmap_ioctl(struct drm_device
*dev
, void *data
,
1348 struct drm_file
*file_priv
);
1349 extern int drm_rmmap(struct drm_device
*dev
, struct drm_local_map
*map
);
1350 extern int drm_rmmap_locked(struct drm_device
*dev
, struct drm_local_map
*map
);
1351 extern int drm_rmmap_ioctl(struct drm_device
*dev
, void *data
,
1352 struct drm_file
*file_priv
);
1353 extern int drm_addbufs(struct drm_device
*dev
, void *data
,
1354 struct drm_file
*file_priv
);
1355 extern int drm_infobufs(struct drm_device
*dev
, void *data
,
1356 struct drm_file
*file_priv
);
1357 extern int drm_markbufs(struct drm_device
*dev
, void *data
,
1358 struct drm_file
*file_priv
);
1359 extern int drm_freebufs(struct drm_device
*dev
, void *data
,
1360 struct drm_file
*file_priv
);
1361 extern int drm_mapbufs(struct drm_device
*dev
, void *data
,
1362 struct drm_file
*file_priv
);
1363 extern int drm_dma_ioctl(struct drm_device
*dev
, void *data
,
1364 struct drm_file
*file_priv
);
1366 /* DMA support (drm_dma.h) */
1367 extern int drm_legacy_dma_setup(struct drm_device
*dev
);
1368 extern void drm_legacy_dma_takedown(struct drm_device
*dev
);
1369 extern void drm_free_buffer(struct drm_device
*dev
, struct drm_buf
* buf
);
1370 extern void drm_core_reclaim_buffers(struct drm_device
*dev
,
1371 struct drm_file
*filp
);
1373 /* IRQ support (drm_irq.h) */
1374 extern int drm_control(struct drm_device
*dev
, void *data
,
1375 struct drm_file
*file_priv
);
1376 extern int drm_irq_install(struct drm_device
*dev
);
1377 extern int drm_irq_uninstall(struct drm_device
*dev
);
1379 extern int drm_vblank_init(struct drm_device
*dev
, int num_crtcs
);
1380 extern int drm_wait_vblank(struct drm_device
*dev
, void *data
,
1381 struct drm_file
*filp
);
1382 extern u32
drm_vblank_count(struct drm_device
*dev
, int crtc
);
1383 extern u32
drm_vblank_count_and_time(struct drm_device
*dev
, int crtc
,
1384 struct timeval
*vblanktime
);
1385 extern void drm_send_vblank_event(struct drm_device
*dev
, int crtc
,
1386 struct drm_pending_vblank_event
*e
);
1387 extern bool drm_handle_vblank(struct drm_device
*dev
, int crtc
);
1388 extern int drm_vblank_get(struct drm_device
*dev
, int crtc
);
1389 extern void drm_vblank_put(struct drm_device
*dev
, int crtc
);
1390 extern void drm_vblank_off(struct drm_device
*dev
, int crtc
);
1391 extern void drm_vblank_cleanup(struct drm_device
*dev
);
1392 extern u32
drm_get_last_vbltimestamp(struct drm_device
*dev
, int crtc
,
1393 struct timeval
*tvblank
, unsigned flags
);
1394 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device
*dev
,
1395 int crtc
, int *max_error
,
1396 struct timeval
*vblank_time
,
1398 struct drm_crtc
*refcrtc
);
1399 extern void drm_calc_timestamping_constants(struct drm_crtc
*crtc
);
1402 drm_mode_parse_command_line_for_connector(const char *mode_option
,
1403 struct drm_connector
*connector
,
1404 struct drm_cmdline_mode
*mode
);
1406 extern struct drm_display_mode
*
1407 drm_mode_create_from_cmdline_mode(struct drm_device
*dev
,
1408 struct drm_cmdline_mode
*cmd
);
1410 extern int drm_display_mode_from_videomode(const struct videomode
*vm
,
1411 struct drm_display_mode
*dmode
);
1412 extern int of_get_drm_display_mode(struct device_node
*np
,
1413 struct drm_display_mode
*dmode
,
1416 /* Modesetting support */
1417 extern void drm_vblank_pre_modeset(struct drm_device
*dev
, int crtc
);
1418 extern void drm_vblank_post_modeset(struct drm_device
*dev
, int crtc
);
1419 extern int drm_modeset_ctl(struct drm_device
*dev
, void *data
,
1420 struct drm_file
*file_priv
);
1422 /* AGP/GART support (drm_agpsupport.h) */
1424 #include <drm/drm_agpsupport.h>
1426 /* Stub support (drm_stub.h) */
1427 extern int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
1428 struct drm_file
*file_priv
);
1429 extern int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
1430 struct drm_file
*file_priv
);
1431 struct drm_master
*drm_master_create(struct drm_minor
*minor
);
1432 extern struct drm_master
*drm_master_get(struct drm_master
*master
);
1433 extern void drm_master_put(struct drm_master
**master
);
1435 extern void drm_put_dev(struct drm_device
*dev
);
1436 extern int drm_put_minor(struct drm_minor
**minor
);
1437 extern void drm_unplug_dev(struct drm_device
*dev
);
1438 extern unsigned int drm_debug
;
1440 extern unsigned int drm_vblank_offdelay
;
1441 extern unsigned int drm_timestamp_precision
;
1442 extern unsigned int drm_timestamp_monotonic
;
1444 extern struct class *drm_class
;
1445 extern struct dentry
*drm_debugfs_root
;
1447 extern struct idr drm_minors_idr
;
1449 extern struct drm_local_map
*drm_getsarea(struct drm_device
*dev
);
1451 /* Debugfs support */
1452 #if defined(CONFIG_DEBUG_FS)
1453 extern int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1454 struct dentry
*root
);
1455 extern int drm_debugfs_create_files(struct drm_info_list
*files
, int count
,
1456 struct dentry
*root
, struct drm_minor
*minor
);
1457 extern int drm_debugfs_remove_files(struct drm_info_list
*files
, int count
,
1458 struct drm_minor
*minor
);
1459 extern int drm_debugfs_cleanup(struct drm_minor
*minor
);
1462 /* Info file support */
1463 extern int drm_name_info(struct seq_file
*m
, void *data
);
1464 extern int drm_vm_info(struct seq_file
*m
, void *data
);
1465 extern int drm_bufs_info(struct seq_file
*m
, void *data
);
1466 extern int drm_vblank_info(struct seq_file
*m
, void *data
);
1467 extern int drm_clients_info(struct seq_file
*m
, void* data
);
1468 extern int drm_gem_name_info(struct seq_file
*m
, void *data
);
1471 extern struct dma_buf
*drm_gem_prime_export(struct drm_device
*dev
,
1472 struct drm_gem_object
*obj
, int flags
);
1473 extern int drm_gem_prime_handle_to_fd(struct drm_device
*dev
,
1474 struct drm_file
*file_priv
, uint32_t handle
, uint32_t flags
,
1476 extern struct drm_gem_object
*drm_gem_prime_import(struct drm_device
*dev
,
1477 struct dma_buf
*dma_buf
);
1478 extern int drm_gem_prime_fd_to_handle(struct drm_device
*dev
,
1479 struct drm_file
*file_priv
, int prime_fd
, uint32_t *handle
);
1480 extern void drm_gem_dmabuf_release(struct dma_buf
*dma_buf
);
1482 extern int drm_prime_handle_to_fd_ioctl(struct drm_device
*dev
, void *data
,
1483 struct drm_file
*file_priv
);
1484 extern int drm_prime_fd_to_handle_ioctl(struct drm_device
*dev
, void *data
,
1485 struct drm_file
*file_priv
);
1487 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table
*sgt
, struct page
**pages
,
1488 dma_addr_t
*addrs
, int max_pages
);
1489 extern struct sg_table
*drm_prime_pages_to_sg(struct page
**pages
, int nr_pages
);
1490 extern void drm_prime_gem_destroy(struct drm_gem_object
*obj
, struct sg_table
*sg
);
1492 int drm_gem_dumb_destroy(struct drm_file
*file
,
1493 struct drm_device
*dev
,
1496 void drm_prime_init_file_private(struct drm_prime_file_private
*prime_fpriv
);
1497 void drm_prime_destroy_file_private(struct drm_prime_file_private
*prime_fpriv
);
1498 int drm_prime_lookup_buf_handle(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
, uint32_t *handle
);
1499 void drm_prime_remove_buf_handle(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
);
1502 extern int drm_vma_info(struct seq_file
*m
, void *data
);
1505 /* Scatter Gather Support (drm_scatter.h) */
1506 extern void drm_legacy_sg_cleanup(struct drm_device
*dev
);
1507 extern int drm_sg_alloc(struct drm_device
*dev
, void *data
,
1508 struct drm_file
*file_priv
);
1509 extern int drm_sg_free(struct drm_device
*dev
, void *data
,
1510 struct drm_file
*file_priv
);
1512 /* ATI PCIGART support (ati_pcigart.h) */
1513 extern int drm_ati_pcigart_init(struct drm_device
*dev
,
1514 struct drm_ati_pcigart_info
* gart_info
);
1515 extern int drm_ati_pcigart_cleanup(struct drm_device
*dev
,
1516 struct drm_ati_pcigart_info
* gart_info
);
1518 extern drm_dma_handle_t
*drm_pci_alloc(struct drm_device
*dev
, size_t size
,
1520 extern void __drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1521 extern void drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1523 /* sysfs support (drm_sysfs.c) */
1524 struct drm_sysfs_class
;
1525 extern struct class *drm_sysfs_create(struct module
*owner
, char *name
);
1526 extern void drm_sysfs_destroy(void);
1527 extern int drm_sysfs_device_add(struct drm_minor
*minor
);
1528 extern void drm_sysfs_hotplug_event(struct drm_device
*dev
);
1529 extern void drm_sysfs_device_remove(struct drm_minor
*minor
);
1530 extern int drm_sysfs_connector_add(struct drm_connector
*connector
);
1531 extern void drm_sysfs_connector_remove(struct drm_connector
*connector
);
1533 /* Graphics Execution Manager library functions (drm_gem.c) */
1534 int drm_gem_init(struct drm_device
*dev
);
1535 void drm_gem_destroy(struct drm_device
*dev
);
1536 void drm_gem_object_release(struct drm_gem_object
*obj
);
1537 void drm_gem_object_free(struct kref
*kref
);
1538 struct drm_gem_object
*drm_gem_object_alloc(struct drm_device
*dev
,
1540 int drm_gem_object_init(struct drm_device
*dev
,
1541 struct drm_gem_object
*obj
, size_t size
);
1542 void drm_gem_private_object_init(struct drm_device
*dev
,
1543 struct drm_gem_object
*obj
, size_t size
);
1544 void drm_gem_vm_open(struct vm_area_struct
*vma
);
1545 void drm_gem_vm_close(struct vm_area_struct
*vma
);
1546 int drm_gem_mmap_obj(struct drm_gem_object
*obj
, unsigned long obj_size
,
1547 struct vm_area_struct
*vma
);
1548 int drm_gem_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1550 #include <drm/drm_global.h>
1553 drm_gem_object_reference(struct drm_gem_object
*obj
)
1555 kref_get(&obj
->refcount
);
1559 drm_gem_object_unreference(struct drm_gem_object
*obj
)
1562 kref_put(&obj
->refcount
, drm_gem_object_free
);
1566 drm_gem_object_unreference_unlocked(struct drm_gem_object
*obj
)
1568 if (obj
&& !atomic_add_unless(&obj
->refcount
.refcount
, -1, 1)) {
1569 struct drm_device
*dev
= obj
->dev
;
1571 mutex_lock(&dev
->struct_mutex
);
1572 if (likely(atomic_dec_and_test(&obj
->refcount
.refcount
)))
1573 drm_gem_object_free(&obj
->refcount
);
1574 mutex_unlock(&dev
->struct_mutex
);
1578 int drm_gem_handle_create(struct drm_file
*file_priv
,
1579 struct drm_gem_object
*obj
,
1581 int drm_gem_handle_delete(struct drm_file
*filp
, u32 handle
);
1583 void drm_gem_object_handle_unreference_unlocked(struct drm_gem_object
*obj
);
1585 void drm_gem_free_mmap_offset(struct drm_gem_object
*obj
);
1586 int drm_gem_create_mmap_offset(struct drm_gem_object
*obj
);
1587 int drm_gem_create_mmap_offset_size(struct drm_gem_object
*obj
, size_t size
);
1589 struct page
**drm_gem_get_pages(struct drm_gem_object
*obj
, gfp_t gfpmask
);
1590 void drm_gem_put_pages(struct drm_gem_object
*obj
, struct page
**pages
,
1591 bool dirty
, bool accessed
);
1593 struct drm_gem_object
*drm_gem_object_lookup(struct drm_device
*dev
,
1594 struct drm_file
*filp
,
1596 int drm_gem_close_ioctl(struct drm_device
*dev
, void *data
,
1597 struct drm_file
*file_priv
);
1598 int drm_gem_flink_ioctl(struct drm_device
*dev
, void *data
,
1599 struct drm_file
*file_priv
);
1600 int drm_gem_open_ioctl(struct drm_device
*dev
, void *data
,
1601 struct drm_file
*file_priv
);
1602 void drm_gem_open(struct drm_device
*dev
, struct drm_file
*file_private
);
1603 void drm_gem_release(struct drm_device
*dev
, struct drm_file
*file_private
);
1605 extern void drm_core_ioremap(struct drm_local_map
*map
, struct drm_device
*dev
);
1606 extern void drm_core_ioremap_wc(struct drm_local_map
*map
, struct drm_device
*dev
);
1607 extern void drm_core_ioremapfree(struct drm_local_map
*map
, struct drm_device
*dev
);
1609 static __inline__
struct drm_local_map
*drm_core_findmap(struct drm_device
*dev
,
1612 struct drm_map_list
*_entry
;
1613 list_for_each_entry(_entry
, &dev
->maplist
, head
)
1614 if (_entry
->user_token
== token
)
1619 static __inline__
void drm_core_dropmap(struct drm_local_map
*map
)
1623 #include <drm/drm_mem_util.h>
1625 extern int drm_fill_in_dev(struct drm_device
*dev
,
1626 const struct pci_device_id
*ent
,
1627 struct drm_driver
*driver
);
1628 int drm_get_minor(struct drm_device
*dev
, struct drm_minor
**minor
, int type
);
1632 static __inline__
int drm_pci_device_is_agp(struct drm_device
*dev
)
1634 if (dev
->driver
->device_is_agp
!= NULL
) {
1635 int err
= (*dev
->driver
->device_is_agp
) (dev
);
1642 return pci_find_capability(dev
->pdev
, PCI_CAP_ID_AGP
);
1645 extern int drm_pci_init(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1646 extern void drm_pci_exit(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1647 extern int drm_get_pci_dev(struct pci_dev
*pdev
,
1648 const struct pci_device_id
*ent
,
1649 struct drm_driver
*driver
);
1651 #define DRM_PCIE_SPEED_25 1
1652 #define DRM_PCIE_SPEED_50 2
1653 #define DRM_PCIE_SPEED_80 4
1655 extern int drm_pcie_get_speed_cap_mask(struct drm_device
*dev
, u32
*speed_mask
);
1657 /* platform section */
1658 extern int drm_platform_init(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1659 extern void drm_platform_exit(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1661 /* returns true if currently okay to sleep */
1662 static __inline__
bool drm_can_sleep(void)
1664 if (in_atomic() || in_dbg_master() || irqs_disabled())
1669 #endif /* __KERNEL__ */