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
148 #define DRIVER_RENDER 0x8000
150 #define DRIVER_BUS_PCI 0x1
151 #define DRIVER_BUS_PLATFORM 0x2
152 #define DRIVER_BUS_USB 0x3
153 #define DRIVER_BUS_HOST1X 0x4
155 /***********************************************************************/
156 /** \name Begin the DRM... */
159 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
160 also include looping detection. */
162 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
163 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
164 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
166 #define DRM_MAP_HASH_OFFSET 0x10000000
170 /***********************************************************************/
171 /** \name Macros to make printk easier */
177 * \param fmt printf() like format string.
178 * \param arg arguments
180 #define DRM_ERROR(fmt, ...) \
181 drm_err(__func__, fmt, ##__VA_ARGS__)
183 #define DRM_INFO(fmt, ...) \
184 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
189 * \param fmt printf() like format string.
190 * \param arg arguments
193 #define DRM_DEBUG(fmt, args...) \
195 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
196 __func__, fmt, ##args); \
199 #define DRM_DEBUG_DRIVER(fmt, args...) \
201 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
202 __func__, fmt, ##args); \
204 #define DRM_DEBUG_KMS(fmt, args...) \
206 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
207 __func__, fmt, ##args); \
209 #define DRM_DEBUG_PRIME(fmt, args...) \
211 drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME, \
212 __func__, fmt, ##args); \
214 #define DRM_LOG(fmt, args...) \
216 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
217 NULL, fmt, ##args); \
219 #define DRM_LOG_KMS(fmt, args...) \
221 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
222 NULL, fmt, ##args); \
224 #define DRM_LOG_MODE(fmt, args...) \
226 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
227 NULL, fmt, ##args); \
229 #define DRM_LOG_DRIVER(fmt, args...) \
231 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
232 NULL, fmt, ##args); \
235 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
236 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
237 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
238 #define DRM_DEBUG(fmt, arg...) do { } while (0)
239 #define DRM_LOG(fmt, arg...) do { } while (0)
240 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
241 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
242 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
248 /***********************************************************************/
249 /** \name Internal types and structures */
252 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
254 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
257 * Test that the hardware lock is held by the caller, returning otherwise.
259 * \param dev DRM device.
260 * \param filp file pointer of the caller.
262 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
264 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
265 _file_priv->master->lock.file_priv != _file_priv) { \
266 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
267 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
268 _file_priv->master->lock.file_priv, _file_priv); \
274 * Ioctl function type.
276 * \param inode device inode.
277 * \param file_priv DRM file private pointer.
278 * \param cmd command.
279 * \param arg argument.
281 typedef int drm_ioctl_t(struct drm_device
*dev
, void *data
,
282 struct drm_file
*file_priv
);
284 typedef int drm_ioctl_compat_t(struct file
*filp
, unsigned int cmd
,
287 #define DRM_IOCTL_NR(n) _IOC_NR(n)
288 #define DRM_MAJOR 226
291 #define DRM_MASTER 0x2
292 #define DRM_ROOT_ONLY 0x4
293 #define DRM_CONTROL_ALLOW 0x8
294 #define DRM_UNLOCKED 0x10
295 #define DRM_RENDER_ALLOW 0x20
297 struct drm_ioctl_desc
{
301 unsigned int cmd_drv
;
306 * Creates a driver or general drm_ioctl_desc array entry for the given
307 * ioctl, for use by drm_ioctl().
310 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
311 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
313 struct drm_magic_entry
{
314 struct list_head head
;
315 struct drm_hash_item hash_item
;
316 struct drm_file
*priv
;
319 struct drm_vma_entry
{
320 struct list_head head
;
321 struct vm_area_struct
*vma
;
329 int idx
; /**< Index into master buflist */
330 int total
; /**< Buffer size */
331 int order
; /**< log-base-2(total) */
332 int used
; /**< Amount of buffer in use (for DMA) */
333 unsigned long offset
; /**< Byte offset (used internally) */
334 void *address
; /**< Address of buffer */
335 unsigned long bus_address
; /**< Bus address of buffer */
336 struct drm_buf
*next
; /**< Kernel-only: used for free list */
337 __volatile__
int waiting
; /**< On kernel DMA queue */
338 __volatile__
int pending
; /**< On hardware DMA queue */
339 struct drm_file
*file_priv
; /**< Private of holding file descr */
340 int context
; /**< Kernel queue for this buffer */
341 int while_locked
; /**< Dispatch this buffer while locked */
349 } list
; /**< Which list we're on */
351 int dev_priv_size
; /**< Size of buffer private storage */
352 void *dev_private
; /**< Per-buffer private storage */
355 /** bufs is one longer than it has to be */
356 struct drm_waitlist
{
357 int count
; /**< Number of possible buffers */
358 struct drm_buf
**bufs
; /**< List of pointers to buffers */
359 struct drm_buf
**rp
; /**< Read pointer */
360 struct drm_buf
**wp
; /**< Write pointer */
361 struct drm_buf
**end
; /**< End pointer */
362 spinlock_t read_lock
;
363 spinlock_t write_lock
;
366 struct drm_freelist
{
367 int initialized
; /**< Freelist in use */
368 atomic_t count
; /**< Number of free buffers */
369 struct drm_buf
*next
; /**< End pointer */
371 wait_queue_head_t waiting
; /**< Processes waiting on free bufs */
372 int low_mark
; /**< Low water mark */
373 int high_mark
; /**< High water mark */
374 atomic_t wfh
; /**< If waiting for high mark */
378 typedef struct drm_dma_handle
{
385 * Buffer entry. There is one of this for each buffer size order.
387 struct drm_buf_entry
{
388 int buf_size
; /**< size */
389 int buf_count
; /**< number of buffers */
390 struct drm_buf
*buflist
; /**< buffer list */
393 struct drm_dma_handle
**seglist
;
395 struct drm_freelist freelist
;
398 /* Event queued up for userspace to read */
399 struct drm_pending_event
{
400 struct drm_event
*event
;
401 struct list_head link
;
402 struct drm_file
*file_priv
;
403 pid_t pid
; /* pid of requester, no guarantee it's valid by the time
404 we deliver the event, for tracing only */
405 void (*destroy
)(struct drm_pending_event
*event
);
408 /* initial implementaton using a linked list - todo hashtab */
409 struct drm_prime_file_private
{
410 struct list_head head
;
414 /** File private data */
416 unsigned always_authenticated
:1;
417 unsigned authenticated
:1;
418 unsigned is_master
:1; /* this file private is a master for a minor */
419 /* true when the client has asked us to expose stereo 3D mode flags */
420 unsigned stereo_allowed
:1;
425 unsigned long ioctl_count
;
426 struct list_head lhead
;
427 struct drm_minor
*minor
;
428 unsigned long lock_count
;
430 /** Mapping of mm object handles to object pointers. */
431 struct idr object_idr
;
432 /** Lock for synchronization of access to object_idr. */
433 spinlock_t table_lock
;
438 struct drm_master
*master
; /* master this node is currently associated with
439 N.B. not always minor->master */
441 * fbs - List of framebuffers associated with this file.
443 * Protected by fbs_lock. Note that the fbs list holds a reference on
444 * the fb object to prevent it from untimely disappearing.
446 struct list_head fbs
;
447 struct mutex fbs_lock
;
449 wait_queue_head_t event_wait
;
450 struct list_head event_list
;
453 struct drm_prime_file_private prime
;
458 atomic_t use_count
; /**< Outstanding uses (+1) */
459 atomic_t finalization
; /**< Finalization in progress */
460 atomic_t block_count
; /**< Count of processes waiting */
461 atomic_t block_read
; /**< Queue blocked for reads */
462 wait_queue_head_t read_queue
; /**< Processes waiting on block_read */
463 atomic_t block_write
; /**< Queue blocked for writes */
464 wait_queue_head_t write_queue
; /**< Processes waiting on block_write */
465 atomic_t total_queued
; /**< Total queued statistic */
466 atomic_t total_flushed
; /**< Total flushes statistic */
467 atomic_t total_locks
; /**< Total locks statistics */
468 enum drm_ctx_flags flags
; /**< Context preserving and 2D-only */
469 struct drm_waitlist waitlist
; /**< Pending buffers */
470 wait_queue_head_t flush_queue
; /**< Processes waiting until flush */
476 struct drm_lock_data
{
477 struct drm_hw_lock
*hw_lock
; /**< Hardware lock */
478 /** Private of lock holder's file (NULL=kernel) */
479 struct drm_file
*file_priv
;
480 wait_queue_head_t lock_queue
; /**< Queue of blocked processes */
481 unsigned long lock_time
; /**< Time of last lock in jiffies */
483 uint32_t kernel_waiters
;
484 uint32_t user_waiters
;
491 struct drm_device_dma
{
493 struct drm_buf_entry bufs
[DRM_MAX_ORDER
+ 1]; /**< buffers, grouped by their size order */
494 int buf_count
; /**< total number of buffers */
495 struct drm_buf
**buflist
; /**< Vector of pointers into drm_device_dma::bufs */
497 int page_count
; /**< number of pages */
498 unsigned long *pagelist
; /**< page list */
499 unsigned long byte_count
;
501 _DRM_DMA_USE_AGP
= 0x01,
502 _DRM_DMA_USE_SG
= 0x02,
503 _DRM_DMA_USE_FB
= 0x04,
504 _DRM_DMA_USE_PCI_RO
= 0x08
510 * AGP memory entry. Stored as a doubly linked list.
513 unsigned long handle
; /**< handle */
515 unsigned long bound
; /**< address */
517 struct list_head head
;
523 * \sa drm_agp_init() and drm_device::agp.
525 struct drm_agp_head
{
526 DRM_AGP_KERN agp_info
; /**< AGP device information */
527 struct list_head memory
;
528 unsigned long mode
; /**< AGP mode */
529 struct agp_bridge_data
*bridge
;
530 int enabled
; /**< whether the AGP bus as been enabled */
531 int acquired
; /**< whether the AGP device has been acquired */
534 int cant_use_aperture
;
535 unsigned long page_mask
;
539 * Scatter-gather memory.
542 unsigned long handle
;
545 struct page
**pagelist
;
551 struct drm_hw_lock
*lock
;
556 * Kernel side of a mapping
558 struct drm_local_map
{
559 resource_size_t offset
; /**< Requested physical address (0 for SAREA)*/
560 unsigned long size
; /**< Requested physical size (bytes) */
561 enum drm_map_type type
; /**< Type of memory to map */
562 enum drm_map_flags flags
; /**< Flags */
563 void *handle
; /**< User-space: "Handle" to pass to mmap() */
564 /**< Kernel-space: kernel-virtual address */
565 int mtrr
; /**< MTRR slot used */
568 typedef struct drm_local_map drm_local_map_t
;
573 struct drm_map_list
{
574 struct list_head head
; /**< list head */
575 struct drm_hash_item hash
;
576 struct drm_local_map
*map
; /**< mapping */
578 struct drm_master
*master
;
582 * Context handle list
584 struct drm_ctx_list
{
585 struct list_head head
; /**< list head */
586 drm_context_t handle
; /**< context handle */
587 struct drm_file
*tag
; /**< associated fd private data */
590 /* location of GART table */
591 #define DRM_ATI_GART_MAIN 1
592 #define DRM_ATI_GART_FB 2
594 #define DRM_ATI_GART_PCI 1
595 #define DRM_ATI_GART_PCIE 2
596 #define DRM_ATI_GART_IGP 3
598 struct drm_ati_pcigart_info
{
599 int gart_table_location
;
603 dma_addr_t table_mask
;
604 struct drm_dma_handle
*table_handle
;
605 struct drm_local_map mapping
;
610 * GEM specific mm private for tracking GEM objects
613 struct drm_vma_offset_manager vma_manager
;
617 * This structure defines the drm_mm memory object, which will be used by the
618 * DRM for its buffer objects.
620 struct drm_gem_object
{
621 /** Reference count of this object */
622 struct kref refcount
;
625 * handle_count - gem file_priv handle count of this object
627 * Each handle also holds a reference. Note that when the handle_count
628 * drops to 0 any global names (e.g. the id in the flink namespace) will
631 * Protected by dev->object_name_lock.
633 unsigned handle_count
;
635 /** Related drm device */
636 struct drm_device
*dev
;
638 /** File representing the shmem storage */
641 /* Mapping info for this object */
642 struct drm_vma_offset_node vma_node
;
645 * Size of the object, in bytes. Immutable over the object's
651 * Global name for this object, starts at 1. 0 means unnamed.
652 * Access is covered by the object_name_lock in the related drm_device
657 * Memory domains. These monitor which caches contain read/write data
658 * related to the object. When transitioning from one set of domains
659 * to another, the driver is called to ensure that caches are suitably
660 * flushed and invalidated
662 uint32_t read_domains
;
663 uint32_t write_domain
;
666 * While validating an exec operation, the
667 * new read/write domain values are computed here.
668 * They will be transferred to the above values
669 * at the point that any cache flushing occurs
671 uint32_t pending_read_domains
;
672 uint32_t pending_write_domain
;
675 * dma_buf - dma buf associated with this GEM object
677 * Pointer to the dma-buf associated with this gem object (either
678 * through importing or exporting). We break the resulting reference
679 * loop when the last gem handle for this object is released.
681 * Protected by obj->object_name_lock
683 struct dma_buf
*dma_buf
;
686 * import_attach - dma buf attachment backing this object
688 * Any foreign dma_buf imported as a gem object has this set to the
689 * attachment point for the device. This is invariant over the lifetime
692 * The driver's ->gem_free_object callback is responsible for cleaning
693 * up the dma_buf attachment and references acquired at import time.
695 * Note that the drm gem/prime core does not depend upon drivers setting
696 * this field any more. So for drivers where this doesn't make sense
697 * (e.g. virtual devices or a displaylink behind an usb bus) they can
698 * simply leave it as NULL.
700 struct dma_buf_attachment
*import_attach
;
703 #include <drm/drm_crtc.h>
705 /* per-master structure */
708 struct kref refcount
; /* refcount for this master */
710 struct list_head head
; /**< each minor contains a list of masters */
711 struct drm_minor
*minor
; /**< link back to minor we are a master for */
713 char *unique
; /**< Unique identifier: e.g., busid */
714 int unique_len
; /**< Length of unique field */
715 int unique_size
; /**< amount allocated */
717 int blocked
; /**< Blocked due to VC switch? */
719 /** \name Authentication */
721 struct drm_open_hash magiclist
;
722 struct list_head magicfree
;
725 struct drm_lock_data lock
; /**< Information on hardware lock */
727 void *driver_priv
; /**< Private structure for driver to use */
730 /* Size of ringbuffer for vblank timestamps. Just double-buffer
731 * in initial implementation.
733 #define DRM_VBLANKTIME_RBSIZE 2
735 /* Flags and return codes for get_vblank_timestamp() driver function. */
736 #define DRM_CALLED_FROM_VBLIRQ 1
737 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
738 #define DRM_VBLANKTIME_INVBL (1 << 1)
740 /* get_scanout_position() return flags */
741 #define DRM_SCANOUTPOS_VALID (1 << 0)
742 #define DRM_SCANOUTPOS_INVBL (1 << 1)
743 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
747 int (*get_irq
)(struct drm_device
*dev
);
748 const char *(*get_name
)(struct drm_device
*dev
);
749 int (*set_busid
)(struct drm_device
*dev
, struct drm_master
*master
);
750 int (*set_unique
)(struct drm_device
*dev
, struct drm_master
*master
,
751 struct drm_unique
*unique
);
752 int (*irq_by_busid
)(struct drm_device
*dev
, struct drm_irq_busid
*p
);
753 /* hooks that are for PCI */
754 int (*agp_init
)(struct drm_device
*dev
);
755 void (*agp_destroy
)(struct drm_device
*dev
);
760 * DRM driver structure. This structure represent the common code for
761 * a family of cards. There will one drm_device for each card present
765 int (*load
) (struct drm_device
*, unsigned long flags
);
766 int (*firstopen
) (struct drm_device
*);
767 int (*open
) (struct drm_device
*, struct drm_file
*);
768 void (*preclose
) (struct drm_device
*, struct drm_file
*file_priv
);
769 void (*postclose
) (struct drm_device
*, struct drm_file
*);
770 void (*lastclose
) (struct drm_device
*);
771 int (*unload
) (struct drm_device
*);
772 int (*suspend
) (struct drm_device
*, pm_message_t state
);
773 int (*resume
) (struct drm_device
*);
774 int (*dma_ioctl
) (struct drm_device
*dev
, void *data
, struct drm_file
*file_priv
);
775 int (*dma_quiescent
) (struct drm_device
*);
776 int (*context_dtor
) (struct drm_device
*dev
, int context
);
779 * get_vblank_counter - get raw hardware vblank counter
781 * @crtc: counter to fetch
783 * Driver callback for fetching a raw hardware vblank counter for @crtc.
784 * If a device doesn't have a hardware counter, the driver can simply
785 * return the value of drm_vblank_count. The DRM core will account for
786 * missed vblank events while interrupts where disabled based on system
789 * Wraparound handling and loss of events due to modesetting is dealt
790 * with in the DRM core code.
793 * Raw vblank counter value.
795 u32 (*get_vblank_counter
) (struct drm_device
*dev
, int crtc
);
798 * enable_vblank - enable vblank interrupt events
800 * @crtc: which irq to enable
802 * Enable vblank interrupts for @crtc. If the device doesn't have
803 * a hardware vblank counter, this routine should be a no-op, since
804 * interrupts will have to stay on to keep the count accurate.
807 * Zero on success, appropriate errno if the given @crtc's vblank
808 * interrupt cannot be enabled.
810 int (*enable_vblank
) (struct drm_device
*dev
, int crtc
);
813 * disable_vblank - disable vblank interrupt events
815 * @crtc: which irq to enable
817 * Disable vblank interrupts for @crtc. If the device doesn't have
818 * a hardware vblank counter, this routine should be a no-op, since
819 * interrupts will have to stay on to keep the count accurate.
821 void (*disable_vblank
) (struct drm_device
*dev
, int crtc
);
824 * Called by \c drm_device_is_agp. Typically used to determine if a
825 * card is really attached to AGP or not.
827 * \param dev DRM device handle
830 * One of three values is returned depending on whether or not the
831 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
832 * (return of 1), or may or may not be AGP (return of 2).
834 int (*device_is_agp
) (struct drm_device
*dev
);
837 * Called by vblank timestamping code.
839 * Return the current display scanout position from a crtc, and an
840 * optional accurate ktime_get timestamp of when position was measured.
842 * \param dev DRM device.
843 * \param crtc Id of the crtc to query.
844 * \param *vpos Target location for current vertical scanout position.
845 * \param *hpos Target location for current horizontal scanout position.
846 * \param *stime Target location for timestamp taken immediately before
847 * scanout position query. Can be NULL to skip timestamp.
848 * \param *etime Target location for timestamp taken immediately after
849 * scanout position query. Can be NULL to skip timestamp.
851 * Returns vpos as a positive number while in active scanout area.
852 * Returns vpos as a negative number inside vblank, counting the number
853 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
854 * until start of active scanout / end of vblank."
856 * \return Flags, or'ed together as follows:
858 * DRM_SCANOUTPOS_VALID = Query successful.
859 * DRM_SCANOUTPOS_INVBL = Inside vblank.
860 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
861 * this flag means that returned position may be offset by a constant
862 * but unknown small number of scanlines wrt. real scanout position.
865 int (*get_scanout_position
) (struct drm_device
*dev
, int crtc
,
866 int *vpos
, int *hpos
, ktime_t
*stime
,
870 * Called by \c drm_get_last_vbltimestamp. Should return a precise
871 * timestamp when the most recent VBLANK interval ended or will end.
873 * Specifically, the timestamp in @vblank_time should correspond as
874 * closely as possible to the time when the first video scanline of
875 * the video frame after the end of VBLANK will start scanning out,
876 * the time immediately after end of the VBLANK interval. If the
877 * @crtc is currently inside VBLANK, this will be a time in the future.
878 * If the @crtc is currently scanning out a frame, this will be the
879 * past start time of the current scanout. This is meant to adhere
880 * to the OpenML OML_sync_control extension specification.
882 * \param dev dev DRM device handle.
883 * \param crtc crtc for which timestamp should be returned.
884 * \param *max_error Maximum allowable timestamp error in nanoseconds.
885 * Implementation should strive to provide timestamp
886 * with an error of at most *max_error nanoseconds.
887 * Returns true upper bound on error for timestamp.
888 * \param *vblank_time Target location for returned vblank timestamp.
889 * \param flags 0 = Defaults, no special treatment needed.
890 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
891 * irq handler. Some drivers need to apply some workarounds
892 * for gpu-specific vblank irq quirks if flag is set.
895 * Zero if timestamping isn't supported in current display mode or a
896 * negative number on failure. A positive status code on success,
897 * which describes how the vblank_time timestamp was computed.
899 int (*get_vblank_timestamp
) (struct drm_device
*dev
, int crtc
,
901 struct timeval
*vblank_time
,
904 /* these have to be filled in */
906 irqreturn_t(*irq_handler
) (DRM_IRQ_ARGS
);
907 void (*irq_preinstall
) (struct drm_device
*dev
);
908 int (*irq_postinstall
) (struct drm_device
*dev
);
909 void (*irq_uninstall
) (struct drm_device
*dev
);
911 /* Master routines */
912 int (*master_create
)(struct drm_device
*dev
, struct drm_master
*master
);
913 void (*master_destroy
)(struct drm_device
*dev
, struct drm_master
*master
);
915 * master_set is called whenever the minor master is set.
916 * master_drop is called whenever the minor master is dropped.
919 int (*master_set
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
921 void (*master_drop
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
924 int (*debugfs_init
)(struct drm_minor
*minor
);
925 void (*debugfs_cleanup
)(struct drm_minor
*minor
);
928 * Driver-specific constructor for drm_gem_objects, to set up
929 * obj->driver_private.
931 * Returns 0 on success.
933 void (*gem_free_object
) (struct drm_gem_object
*obj
);
934 int (*gem_open_object
) (struct drm_gem_object
*, struct drm_file
*);
935 void (*gem_close_object
) (struct drm_gem_object
*, struct drm_file
*);
938 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
939 int (*prime_handle_to_fd
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
940 uint32_t handle
, uint32_t flags
, int *prime_fd
);
941 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
942 int (*prime_fd_to_handle
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
943 int prime_fd
, uint32_t *handle
);
944 /* export GEM -> dmabuf */
945 struct dma_buf
* (*gem_prime_export
)(struct drm_device
*dev
,
946 struct drm_gem_object
*obj
, int flags
);
947 /* import dmabuf -> GEM */
948 struct drm_gem_object
* (*gem_prime_import
)(struct drm_device
*dev
,
949 struct dma_buf
*dma_buf
);
950 /* low-level interface used by drm_gem_prime_{import,export} */
951 int (*gem_prime_pin
)(struct drm_gem_object
*obj
);
952 void (*gem_prime_unpin
)(struct drm_gem_object
*obj
);
953 struct sg_table
*(*gem_prime_get_sg_table
)(struct drm_gem_object
*obj
);
954 struct drm_gem_object
*(*gem_prime_import_sg_table
)(
955 struct drm_device
*dev
, size_t size
,
956 struct sg_table
*sgt
);
957 void *(*gem_prime_vmap
)(struct drm_gem_object
*obj
);
958 void (*gem_prime_vunmap
)(struct drm_gem_object
*obj
, void *vaddr
);
959 int (*gem_prime_mmap
)(struct drm_gem_object
*obj
,
960 struct vm_area_struct
*vma
);
962 /* vga arb irq handler */
963 void (*vgaarb_irq
)(struct drm_device
*dev
, bool state
);
965 /* dumb alloc support */
966 int (*dumb_create
)(struct drm_file
*file_priv
,
967 struct drm_device
*dev
,
968 struct drm_mode_create_dumb
*args
);
969 int (*dumb_map_offset
)(struct drm_file
*file_priv
,
970 struct drm_device
*dev
, uint32_t handle
,
972 int (*dumb_destroy
)(struct drm_file
*file_priv
,
973 struct drm_device
*dev
,
976 /* Driver private ops for this object */
977 const struct vm_operations_struct
*gem_vm_ops
;
988 const struct drm_ioctl_desc
*ioctls
;
990 const struct file_operations
*fops
;
992 struct pci_driver
*pci
;
993 struct platform_device
*platform_device
;
994 struct usb_driver
*usb
;
998 /* List of devices hanging off this driver */
999 struct list_head device_list
;
1002 #define DRM_MINOR_UNASSIGNED 0
1003 #define DRM_MINOR_LEGACY 1
1004 #define DRM_MINOR_CONTROL 2
1005 #define DRM_MINOR_RENDER 3
1008 * Info file list entry. This structure represents a debugfs or proc file to
1009 * be created by the drm core
1011 struct drm_info_list
{
1012 const char *name
; /** file name */
1013 int (*show
)(struct seq_file
*, void*); /** show callback */
1014 u32 driver_features
; /**< Required driver features for this entry */
1019 * debugfs node structure. This structure represents a debugfs file.
1021 struct drm_info_node
{
1022 struct list_head list
;
1023 struct drm_minor
*minor
;
1024 const struct drm_info_list
*info_ent
;
1025 struct dentry
*dent
;
1029 * DRM minor structure. This structure represents a drm minor number.
1032 int index
; /**< Minor device number */
1033 int type
; /**< Control or render */
1034 dev_t device
; /**< Device number for mknod */
1035 struct device
*kdev
; /**< Linux device */
1036 struct drm_device
*dev
;
1038 struct dentry
*debugfs_root
;
1040 struct list_head debugfs_list
;
1041 struct mutex debugfs_lock
; /* Protects debugfs_list. */
1043 struct drm_master
*master
; /* currently active master for this node */
1044 struct list_head master_list
;
1045 struct drm_mode_group mode_group
;
1048 /* mode specified on the command line */
1049 struct drm_cmdline_mode
{
1051 bool refresh_specified
;
1060 enum drm_connector_force force
;
1064 struct drm_pending_vblank_event
{
1065 struct drm_pending_event base
;
1067 struct drm_event_vblank event
;
1070 struct drm_vblank_crtc
{
1071 wait_queue_head_t queue
; /**< VBLANK wait queue */
1072 struct timeval time
[DRM_VBLANKTIME_RBSIZE
]; /**< timestamp of current count */
1073 atomic_t count
; /**< number of VBLANK interrupts */
1074 atomic_t refcount
; /* number of users of vblank interruptsper crtc */
1075 u32 last
; /* protected by dev->vbl_lock, used */
1076 /* for wraparound handling */
1077 u32 last_wait
; /* Last vblank seqno waited per CRTC */
1078 unsigned int inmodeset
; /* Display driver is setting mode */
1079 bool enabled
; /* so we don't call enable more than
1084 * DRM device structure. This structure represent a complete card that
1085 * may contain multiple heads.
1088 struct list_head driver_item
; /**< list of devices per driver */
1089 char *devname
; /**< For /proc/interrupts */
1090 int if_version
; /**< Highest interface version set */
1094 spinlock_t count_lock
; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1095 struct mutex struct_mutex
; /**< For others */
1098 /** \name Usage Counters */
1100 int open_count
; /**< Outstanding files open */
1101 atomic_t ioctl_count
; /**< Outstanding IOCTLs pending */
1102 atomic_t vma_count
; /**< Outstanding vma areas open */
1103 int buf_use
; /**< Buffers in use -- cannot alloc */
1104 atomic_t buf_alloc
; /**< Buffer allocation in progress */
1107 struct list_head filelist
;
1109 /** \name Memory management */
1111 struct list_head maplist
; /**< Linked list of regions */
1112 struct drm_open_hash map_hash
; /**< User token hash table for maps */
1114 /** \name Context handle management */
1116 struct list_head ctxlist
; /**< Linked list of context handles */
1117 struct mutex ctxlist_mutex
; /**< For ctxlist */
1121 struct list_head vmalist
; /**< List of vmas (for debugging) */
1125 /** \name DMA support */
1127 struct drm_device_dma
*dma
; /**< Optional pointer for DMA support */
1130 /** \name Context support */
1132 bool irq_enabled
; /**< True if irq handler is enabled */
1133 __volatile__
long context_flag
; /**< Context swapping flag */
1134 int last_context
; /**< Last current context */
1137 /** \name VBLANK IRQ support */
1141 * At load time, disabling the vblank interrupt won't be allowed since
1142 * old clients may not call the modeset ioctl and therefore misbehave.
1143 * Once the modeset ioctl *has* been called though, we can safely
1144 * disable them when unused.
1146 bool vblank_disable_allowed
;
1148 /* array of size num_crtcs */
1149 struct drm_vblank_crtc
*vblank
;
1151 spinlock_t vblank_time_lock
; /**< Protects vblank count and time updates during vblank enable/disable */
1152 spinlock_t vbl_lock
;
1153 struct timer_list vblank_disable_timer
;
1155 u32 max_vblank_count
; /**< size of vblank counter register */
1160 struct list_head vblank_event_list
;
1161 spinlock_t event_lock
;
1165 struct drm_agp_head
*agp
; /**< AGP data */
1167 struct device
*dev
; /**< Device structure */
1168 struct pci_dev
*pdev
; /**< PCI device structure */
1170 struct pci_controller
*hose
;
1173 struct platform_device
*platformdev
; /**< Platform device struture */
1174 struct usb_device
*usbdev
;
1176 struct drm_sg_mem
*sg
; /**< Scatter gather memory */
1177 unsigned int num_crtcs
; /**< Number of CRTCs on this device */
1178 void *dev_private
; /**< device private data */
1180 struct address_space
*dev_mapping
;
1181 struct drm_sigdata sigdata
; /**< For block_all_signals */
1184 struct drm_driver
*driver
;
1185 struct drm_local_map
*agp_buffer_map
;
1186 unsigned int agp_buffer_token
;
1187 struct drm_minor
*control
; /**< Control node for card */
1188 struct drm_minor
*primary
; /**< render type primary screen head */
1189 struct drm_minor
*render
; /**< render node for card */
1191 struct drm_mode_config mode_config
; /**< Current mode config */
1193 /** \name GEM information */
1195 struct mutex object_name_lock
;
1196 struct idr object_name_idr
;
1198 int switch_power_state
;
1200 atomic_t unplugged
; /* device has been unplugged or gone away */
1203 #define DRM_SWITCH_POWER_ON 0
1204 #define DRM_SWITCH_POWER_OFF 1
1205 #define DRM_SWITCH_POWER_CHANGING 2
1206 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3
1208 static __inline__
int drm_core_check_feature(struct drm_device
*dev
,
1211 return ((dev
->driver
->driver_features
& feature
) ? 1 : 0);
1214 static inline int drm_dev_to_irq(struct drm_device
*dev
)
1216 return dev
->driver
->bus
->get_irq(dev
);
1219 static inline void drm_device_set_unplugged(struct drm_device
*dev
)
1222 atomic_set(&dev
->unplugged
, 1);
1225 static inline int drm_device_is_unplugged(struct drm_device
*dev
)
1227 int ret
= atomic_read(&dev
->unplugged
);
1232 static inline bool drm_modeset_is_locked(struct drm_device
*dev
)
1234 return mutex_is_locked(&dev
->mode_config
.mutex
);
1237 static inline bool drm_is_render_client(struct drm_file
*file_priv
)
1239 return file_priv
->minor
->type
== DRM_MINOR_RENDER
;
1242 /******************************************************************/
1243 /** \name Internal function definitions */
1246 /* Driver support (drm_drv.h) */
1247 extern long drm_ioctl(struct file
*filp
,
1248 unsigned int cmd
, unsigned long arg
);
1249 extern long drm_compat_ioctl(struct file
*filp
,
1250 unsigned int cmd
, unsigned long arg
);
1251 extern int drm_lastclose(struct drm_device
*dev
);
1253 /* Device support (drm_fops.h) */
1254 extern struct mutex drm_global_mutex
;
1255 extern int drm_open(struct inode
*inode
, struct file
*filp
);
1256 extern int drm_stub_open(struct inode
*inode
, struct file
*filp
);
1257 extern ssize_t
drm_read(struct file
*filp
, char __user
*buffer
,
1258 size_t count
, loff_t
*offset
);
1259 extern int drm_release(struct inode
*inode
, struct file
*filp
);
1261 /* Mapping support (drm_vm.h) */
1262 extern int drm_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1263 extern int drm_mmap_locked(struct file
*filp
, struct vm_area_struct
*vma
);
1264 extern void drm_vm_open_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1265 extern void drm_vm_close_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1266 extern unsigned int drm_poll(struct file
*filp
, struct poll_table_struct
*wait
);
1268 /* Memory management support (drm_memory.h) */
1269 #include <drm/drm_memory.h>
1271 /* Misc. IOCTL support (drm_ioctl.h) */
1272 extern int drm_irq_by_busid(struct drm_device
*dev
, void *data
,
1273 struct drm_file
*file_priv
);
1274 extern int drm_getunique(struct drm_device
*dev
, void *data
,
1275 struct drm_file
*file_priv
);
1276 extern int drm_setunique(struct drm_device
*dev
, void *data
,
1277 struct drm_file
*file_priv
);
1278 extern int drm_getmap(struct drm_device
*dev
, void *data
,
1279 struct drm_file
*file_priv
);
1280 extern int drm_getclient(struct drm_device
*dev
, void *data
,
1281 struct drm_file
*file_priv
);
1282 extern int drm_getstats(struct drm_device
*dev
, void *data
,
1283 struct drm_file
*file_priv
);
1284 extern int drm_getcap(struct drm_device
*dev
, void *data
,
1285 struct drm_file
*file_priv
);
1286 extern int drm_setclientcap(struct drm_device
*dev
, void *data
,
1287 struct drm_file
*file_priv
);
1288 extern int drm_setversion(struct drm_device
*dev
, void *data
,
1289 struct drm_file
*file_priv
);
1290 extern int drm_noop(struct drm_device
*dev
, void *data
,
1291 struct drm_file
*file_priv
);
1293 /* Context IOCTL support (drm_context.h) */
1294 extern int drm_resctx(struct drm_device
*dev
, void *data
,
1295 struct drm_file
*file_priv
);
1296 extern int drm_addctx(struct drm_device
*dev
, void *data
,
1297 struct drm_file
*file_priv
);
1298 extern int drm_getctx(struct drm_device
*dev
, void *data
,
1299 struct drm_file
*file_priv
);
1300 extern int drm_switchctx(struct drm_device
*dev
, void *data
,
1301 struct drm_file
*file_priv
);
1302 extern int drm_newctx(struct drm_device
*dev
, void *data
,
1303 struct drm_file
*file_priv
);
1304 extern int drm_rmctx(struct drm_device
*dev
, void *data
,
1305 struct drm_file
*file_priv
);
1307 extern int drm_ctxbitmap_init(struct drm_device
*dev
);
1308 extern void drm_ctxbitmap_cleanup(struct drm_device
*dev
);
1309 extern void drm_ctxbitmap_free(struct drm_device
*dev
, int ctx_handle
);
1311 extern int drm_setsareactx(struct drm_device
*dev
, void *data
,
1312 struct drm_file
*file_priv
);
1313 extern int drm_getsareactx(struct drm_device
*dev
, void *data
,
1314 struct drm_file
*file_priv
);
1316 /* Authentication IOCTL support (drm_auth.h) */
1317 extern int drm_getmagic(struct drm_device
*dev
, void *data
,
1318 struct drm_file
*file_priv
);
1319 extern int drm_authmagic(struct drm_device
*dev
, void *data
,
1320 struct drm_file
*file_priv
);
1321 extern int drm_remove_magic(struct drm_master
*master
, drm_magic_t magic
);
1323 /* Cache management (drm_cache.c) */
1324 void drm_clflush_pages(struct page
*pages
[], unsigned long num_pages
);
1325 void drm_clflush_sg(struct sg_table
*st
);
1326 void drm_clflush_virt_range(char *addr
, unsigned long length
);
1328 /* Locking IOCTL support (drm_lock.h) */
1329 extern int drm_lock(struct drm_device
*dev
, void *data
,
1330 struct drm_file
*file_priv
);
1331 extern int drm_unlock(struct drm_device
*dev
, void *data
,
1332 struct drm_file
*file_priv
);
1333 extern int drm_lock_free(struct drm_lock_data
*lock_data
, unsigned int context
);
1334 extern void drm_idlelock_take(struct drm_lock_data
*lock_data
);
1335 extern void drm_idlelock_release(struct drm_lock_data
*lock_data
);
1338 * These are exported to drivers so that they can implement fencing using
1339 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1342 extern int drm_i_have_hw_lock(struct drm_device
*dev
, struct drm_file
*file_priv
);
1344 /* Buffer management support (drm_bufs.h) */
1345 extern int drm_addbufs_agp(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1346 extern int drm_addbufs_pci(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1347 extern int drm_addmap(struct drm_device
*dev
, resource_size_t offset
,
1348 unsigned int size
, enum drm_map_type type
,
1349 enum drm_map_flags flags
, struct drm_local_map
**map_ptr
);
1350 extern int drm_addmap_ioctl(struct drm_device
*dev
, void *data
,
1351 struct drm_file
*file_priv
);
1352 extern int drm_rmmap(struct drm_device
*dev
, struct drm_local_map
*map
);
1353 extern int drm_rmmap_locked(struct drm_device
*dev
, struct drm_local_map
*map
);
1354 extern int drm_rmmap_ioctl(struct drm_device
*dev
, void *data
,
1355 struct drm_file
*file_priv
);
1356 extern int drm_addbufs(struct drm_device
*dev
, void *data
,
1357 struct drm_file
*file_priv
);
1358 extern int drm_infobufs(struct drm_device
*dev
, void *data
,
1359 struct drm_file
*file_priv
);
1360 extern int drm_markbufs(struct drm_device
*dev
, void *data
,
1361 struct drm_file
*file_priv
);
1362 extern int drm_freebufs(struct drm_device
*dev
, void *data
,
1363 struct drm_file
*file_priv
);
1364 extern int drm_mapbufs(struct drm_device
*dev
, void *data
,
1365 struct drm_file
*file_priv
);
1366 extern int drm_dma_ioctl(struct drm_device
*dev
, void *data
,
1367 struct drm_file
*file_priv
);
1369 /* DMA support (drm_dma.h) */
1370 extern int drm_legacy_dma_setup(struct drm_device
*dev
);
1371 extern void drm_legacy_dma_takedown(struct drm_device
*dev
);
1372 extern void drm_free_buffer(struct drm_device
*dev
, struct drm_buf
* buf
);
1373 extern void drm_core_reclaim_buffers(struct drm_device
*dev
,
1374 struct drm_file
*filp
);
1376 /* IRQ support (drm_irq.h) */
1377 extern int drm_control(struct drm_device
*dev
, void *data
,
1378 struct drm_file
*file_priv
);
1379 extern int drm_irq_install(struct drm_device
*dev
);
1380 extern int drm_irq_uninstall(struct drm_device
*dev
);
1382 extern int drm_vblank_init(struct drm_device
*dev
, int num_crtcs
);
1383 extern int drm_wait_vblank(struct drm_device
*dev
, void *data
,
1384 struct drm_file
*filp
);
1385 extern u32
drm_vblank_count(struct drm_device
*dev
, int crtc
);
1386 extern u32
drm_vblank_count_and_time(struct drm_device
*dev
, int crtc
,
1387 struct timeval
*vblanktime
);
1388 extern void drm_send_vblank_event(struct drm_device
*dev
, int crtc
,
1389 struct drm_pending_vblank_event
*e
);
1390 extern bool drm_handle_vblank(struct drm_device
*dev
, int crtc
);
1391 extern int drm_vblank_get(struct drm_device
*dev
, int crtc
);
1392 extern void drm_vblank_put(struct drm_device
*dev
, int crtc
);
1393 extern void drm_vblank_off(struct drm_device
*dev
, int crtc
);
1394 extern void drm_vblank_cleanup(struct drm_device
*dev
);
1395 extern u32
drm_get_last_vbltimestamp(struct drm_device
*dev
, int crtc
,
1396 struct timeval
*tvblank
, unsigned flags
);
1397 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device
*dev
,
1398 int crtc
, int *max_error
,
1399 struct timeval
*vblank_time
,
1401 struct drm_crtc
*refcrtc
);
1402 extern void drm_calc_timestamping_constants(struct drm_crtc
*crtc
);
1405 drm_mode_parse_command_line_for_connector(const char *mode_option
,
1406 struct drm_connector
*connector
,
1407 struct drm_cmdline_mode
*mode
);
1409 extern struct drm_display_mode
*
1410 drm_mode_create_from_cmdline_mode(struct drm_device
*dev
,
1411 struct drm_cmdline_mode
*cmd
);
1413 extern int drm_display_mode_from_videomode(const struct videomode
*vm
,
1414 struct drm_display_mode
*dmode
);
1415 extern int of_get_drm_display_mode(struct device_node
*np
,
1416 struct drm_display_mode
*dmode
,
1419 /* Modesetting support */
1420 extern void drm_vblank_pre_modeset(struct drm_device
*dev
, int crtc
);
1421 extern void drm_vblank_post_modeset(struct drm_device
*dev
, int crtc
);
1422 extern int drm_modeset_ctl(struct drm_device
*dev
, void *data
,
1423 struct drm_file
*file_priv
);
1425 /* AGP/GART support (drm_agpsupport.h) */
1427 #include <drm/drm_agpsupport.h>
1429 /* Stub support (drm_stub.h) */
1430 extern int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
1431 struct drm_file
*file_priv
);
1432 extern int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
1433 struct drm_file
*file_priv
);
1434 struct drm_master
*drm_master_create(struct drm_minor
*minor
);
1435 extern struct drm_master
*drm_master_get(struct drm_master
*master
);
1436 extern void drm_master_put(struct drm_master
**master
);
1438 extern void drm_put_dev(struct drm_device
*dev
);
1439 extern void drm_unplug_dev(struct drm_device
*dev
);
1440 extern unsigned int drm_debug
;
1441 extern unsigned int drm_rnodes
;
1443 extern unsigned int drm_vblank_offdelay
;
1444 extern unsigned int drm_timestamp_precision
;
1445 extern unsigned int drm_timestamp_monotonic
;
1447 extern struct class *drm_class
;
1448 extern struct dentry
*drm_debugfs_root
;
1450 extern struct idr drm_minors_idr
;
1452 extern struct drm_local_map
*drm_getsarea(struct drm_device
*dev
);
1454 /* Debugfs support */
1455 #if defined(CONFIG_DEBUG_FS)
1456 extern int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1457 struct dentry
*root
);
1458 extern int drm_debugfs_create_files(const struct drm_info_list
*files
,
1459 int count
, struct dentry
*root
,
1460 struct drm_minor
*minor
);
1461 extern int drm_debugfs_remove_files(const struct drm_info_list
*files
,
1462 int count
, struct drm_minor
*minor
);
1463 extern int drm_debugfs_cleanup(struct drm_minor
*minor
);
1466 /* Info file support */
1467 extern int drm_name_info(struct seq_file
*m
, void *data
);
1468 extern int drm_vm_info(struct seq_file
*m
, void *data
);
1469 extern int drm_bufs_info(struct seq_file
*m
, void *data
);
1470 extern int drm_vblank_info(struct seq_file
*m
, void *data
);
1471 extern int drm_clients_info(struct seq_file
*m
, void* data
);
1472 extern int drm_gem_name_info(struct seq_file
*m
, void *data
);
1475 extern struct dma_buf
*drm_gem_prime_export(struct drm_device
*dev
,
1476 struct drm_gem_object
*obj
, int flags
);
1477 extern int drm_gem_prime_handle_to_fd(struct drm_device
*dev
,
1478 struct drm_file
*file_priv
, uint32_t handle
, uint32_t flags
,
1480 extern struct drm_gem_object
*drm_gem_prime_import(struct drm_device
*dev
,
1481 struct dma_buf
*dma_buf
);
1482 extern int drm_gem_prime_fd_to_handle(struct drm_device
*dev
,
1483 struct drm_file
*file_priv
, int prime_fd
, uint32_t *handle
);
1484 extern void drm_gem_dmabuf_release(struct dma_buf
*dma_buf
);
1486 extern int drm_prime_handle_to_fd_ioctl(struct drm_device
*dev
, void *data
,
1487 struct drm_file
*file_priv
);
1488 extern int drm_prime_fd_to_handle_ioctl(struct drm_device
*dev
, void *data
,
1489 struct drm_file
*file_priv
);
1491 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table
*sgt
, struct page
**pages
,
1492 dma_addr_t
*addrs
, int max_pages
);
1493 extern struct sg_table
*drm_prime_pages_to_sg(struct page
**pages
, int nr_pages
);
1494 extern void drm_prime_gem_destroy(struct drm_gem_object
*obj
, struct sg_table
*sg
);
1496 int drm_gem_dumb_destroy(struct drm_file
*file
,
1497 struct drm_device
*dev
,
1500 void drm_prime_init_file_private(struct drm_prime_file_private
*prime_fpriv
);
1501 void drm_prime_destroy_file_private(struct drm_prime_file_private
*prime_fpriv
);
1502 void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
);
1505 extern int drm_vma_info(struct seq_file
*m
, void *data
);
1508 /* Scatter Gather Support (drm_scatter.h) */
1509 extern void drm_legacy_sg_cleanup(struct drm_device
*dev
);
1510 extern int drm_sg_alloc(struct drm_device
*dev
, void *data
,
1511 struct drm_file
*file_priv
);
1512 extern int drm_sg_free(struct drm_device
*dev
, void *data
,
1513 struct drm_file
*file_priv
);
1515 /* ATI PCIGART support (ati_pcigart.h) */
1516 extern int drm_ati_pcigart_init(struct drm_device
*dev
,
1517 struct drm_ati_pcigart_info
* gart_info
);
1518 extern int drm_ati_pcigart_cleanup(struct drm_device
*dev
,
1519 struct drm_ati_pcigart_info
* gart_info
);
1521 extern drm_dma_handle_t
*drm_pci_alloc(struct drm_device
*dev
, size_t size
,
1523 extern void __drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1524 extern void drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1526 /* sysfs support (drm_sysfs.c) */
1527 struct drm_sysfs_class
;
1528 extern struct class *drm_sysfs_create(struct module
*owner
, char *name
);
1529 extern void drm_sysfs_destroy(void);
1530 extern int drm_sysfs_device_add(struct drm_minor
*minor
);
1531 extern void drm_sysfs_hotplug_event(struct drm_device
*dev
);
1532 extern void drm_sysfs_device_remove(struct drm_minor
*minor
);
1533 extern int drm_sysfs_connector_add(struct drm_connector
*connector
);
1534 extern void drm_sysfs_connector_remove(struct drm_connector
*connector
);
1536 /* Graphics Execution Manager library functions (drm_gem.c) */
1537 int drm_gem_init(struct drm_device
*dev
);
1538 void drm_gem_destroy(struct drm_device
*dev
);
1539 void drm_gem_object_release(struct drm_gem_object
*obj
);
1540 void drm_gem_object_free(struct kref
*kref
);
1541 int drm_gem_object_init(struct drm_device
*dev
,
1542 struct drm_gem_object
*obj
, size_t size
);
1543 void drm_gem_private_object_init(struct drm_device
*dev
,
1544 struct drm_gem_object
*obj
, size_t size
);
1545 void drm_gem_vm_open(struct vm_area_struct
*vma
);
1546 void drm_gem_vm_close(struct vm_area_struct
*vma
);
1547 int drm_gem_mmap_obj(struct drm_gem_object
*obj
, unsigned long obj_size
,
1548 struct vm_area_struct
*vma
);
1549 int drm_gem_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1551 #include <drm/drm_global.h>
1554 drm_gem_object_reference(struct drm_gem_object
*obj
)
1556 kref_get(&obj
->refcount
);
1560 drm_gem_object_unreference(struct drm_gem_object
*obj
)
1563 kref_put(&obj
->refcount
, drm_gem_object_free
);
1567 drm_gem_object_unreference_unlocked(struct drm_gem_object
*obj
)
1569 if (obj
&& !atomic_add_unless(&obj
->refcount
.refcount
, -1, 1)) {
1570 struct drm_device
*dev
= obj
->dev
;
1572 mutex_lock(&dev
->struct_mutex
);
1573 if (likely(atomic_dec_and_test(&obj
->refcount
.refcount
)))
1574 drm_gem_object_free(&obj
->refcount
);
1575 mutex_unlock(&dev
->struct_mutex
);
1579 int drm_gem_handle_create_tail(struct drm_file
*file_priv
,
1580 struct drm_gem_object
*obj
,
1582 int drm_gem_handle_create(struct drm_file
*file_priv
,
1583 struct drm_gem_object
*obj
,
1585 int drm_gem_handle_delete(struct drm_file
*filp
, u32 handle
);
1588 void drm_gem_free_mmap_offset(struct drm_gem_object
*obj
);
1589 int drm_gem_create_mmap_offset(struct drm_gem_object
*obj
);
1590 int drm_gem_create_mmap_offset_size(struct drm_gem_object
*obj
, size_t size
);
1592 struct page
**drm_gem_get_pages(struct drm_gem_object
*obj
, gfp_t gfpmask
);
1593 void drm_gem_put_pages(struct drm_gem_object
*obj
, struct page
**pages
,
1594 bool dirty
, bool accessed
);
1596 struct drm_gem_object
*drm_gem_object_lookup(struct drm_device
*dev
,
1597 struct drm_file
*filp
,
1599 int drm_gem_close_ioctl(struct drm_device
*dev
, void *data
,
1600 struct drm_file
*file_priv
);
1601 int drm_gem_flink_ioctl(struct drm_device
*dev
, void *data
,
1602 struct drm_file
*file_priv
);
1603 int drm_gem_open_ioctl(struct drm_device
*dev
, void *data
,
1604 struct drm_file
*file_priv
);
1605 void drm_gem_open(struct drm_device
*dev
, struct drm_file
*file_private
);
1606 void drm_gem_release(struct drm_device
*dev
, struct drm_file
*file_private
);
1608 extern void drm_core_ioremap(struct drm_local_map
*map
, struct drm_device
*dev
);
1609 extern void drm_core_ioremap_wc(struct drm_local_map
*map
, struct drm_device
*dev
);
1610 extern void drm_core_ioremapfree(struct drm_local_map
*map
, struct drm_device
*dev
);
1612 static __inline__
struct drm_local_map
*drm_core_findmap(struct drm_device
*dev
,
1615 struct drm_map_list
*_entry
;
1616 list_for_each_entry(_entry
, &dev
->maplist
, head
)
1617 if (_entry
->user_token
== token
)
1622 static __inline__
void drm_core_dropmap(struct drm_local_map
*map
)
1626 #include <drm/drm_mem_util.h>
1628 struct drm_device
*drm_dev_alloc(struct drm_driver
*driver
,
1629 struct device
*parent
);
1630 void drm_dev_free(struct drm_device
*dev
);
1631 int drm_dev_register(struct drm_device
*dev
, unsigned long flags
);
1632 void drm_dev_unregister(struct drm_device
*dev
);
1636 static __inline__
int drm_pci_device_is_agp(struct drm_device
*dev
)
1638 if (dev
->driver
->device_is_agp
!= NULL
) {
1639 int err
= (*dev
->driver
->device_is_agp
) (dev
);
1646 return pci_find_capability(dev
->pdev
, PCI_CAP_ID_AGP
);
1649 extern int drm_pci_init(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1650 extern void drm_pci_exit(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1651 extern int drm_get_pci_dev(struct pci_dev
*pdev
,
1652 const struct pci_device_id
*ent
,
1653 struct drm_driver
*driver
);
1655 #define DRM_PCIE_SPEED_25 1
1656 #define DRM_PCIE_SPEED_50 2
1657 #define DRM_PCIE_SPEED_80 4
1659 extern int drm_pcie_get_speed_cap_mask(struct drm_device
*dev
, u32
*speed_mask
);
1661 /* platform section */
1662 extern int drm_platform_init(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1663 extern void drm_platform_exit(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1665 /* returns true if currently okay to sleep */
1666 static __inline__
bool drm_can_sleep(void)
1668 if (in_atomic() || in_dbg_master() || irqs_disabled())
1673 #endif /* __KERNEL__ */