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
;
618 /** Handle count of this object. Each handle also holds a reference */
619 atomic_t handle_count
; /* number of handles on this object */
621 /** Related drm device */
622 struct drm_device
*dev
;
624 /** File representing the shmem storage */
627 /* Mapping info for this object */
628 struct drm_vma_offset_node vma_node
;
631 * Size of the object, in bytes. Immutable over the object's
637 * Global name for this object, starts at 1. 0 means unnamed.
638 * Access is covered by the object_name_lock in the related drm_device
643 * Memory domains. These monitor which caches contain read/write data
644 * related to the object. When transitioning from one set of domains
645 * to another, the driver is called to ensure that caches are suitably
646 * flushed and invalidated
648 uint32_t read_domains
;
649 uint32_t write_domain
;
652 * While validating an exec operation, the
653 * new read/write domain values are computed here.
654 * They will be transferred to the above values
655 * at the point that any cache flushing occurs
657 uint32_t pending_read_domains
;
658 uint32_t pending_write_domain
;
660 void *driver_private
;
662 /* dma buf exported from this GEM object */
663 struct dma_buf
*export_dma_buf
;
666 * import_attach - dma buf attachment backing this object
668 * Any foreign dma_buf imported as a gem object has this set to the
669 * attachment point for the device. This is invariant over the lifetime
672 * The driver's ->gem_free_object callback is responsible for cleaning
673 * up the dma_buf attachment and references acquired at import time.
675 struct dma_buf_attachment
*import_attach
;
678 #include <drm/drm_crtc.h>
680 /* per-master structure */
683 struct kref refcount
; /* refcount for this master */
685 struct list_head head
; /**< each minor contains a list of masters */
686 struct drm_minor
*minor
; /**< link back to minor we are a master for */
688 char *unique
; /**< Unique identifier: e.g., busid */
689 int unique_len
; /**< Length of unique field */
690 int unique_size
; /**< amount allocated */
692 int blocked
; /**< Blocked due to VC switch? */
694 /** \name Authentication */
696 struct drm_open_hash magiclist
;
697 struct list_head magicfree
;
700 struct drm_lock_data lock
; /**< Information on hardware lock */
702 void *driver_priv
; /**< Private structure for driver to use */
705 /* Size of ringbuffer for vblank timestamps. Just double-buffer
706 * in initial implementation.
708 #define DRM_VBLANKTIME_RBSIZE 2
710 /* Flags and return codes for get_vblank_timestamp() driver function. */
711 #define DRM_CALLED_FROM_VBLIRQ 1
712 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
713 #define DRM_VBLANKTIME_INVBL (1 << 1)
715 /* get_scanout_position() return flags */
716 #define DRM_SCANOUTPOS_VALID (1 << 0)
717 #define DRM_SCANOUTPOS_INVBL (1 << 1)
718 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
722 int (*get_irq
)(struct drm_device
*dev
);
723 const char *(*get_name
)(struct drm_device
*dev
);
724 int (*set_busid
)(struct drm_device
*dev
, struct drm_master
*master
);
725 int (*set_unique
)(struct drm_device
*dev
, struct drm_master
*master
,
726 struct drm_unique
*unique
);
727 int (*irq_by_busid
)(struct drm_device
*dev
, struct drm_irq_busid
*p
);
728 /* hooks that are for PCI */
729 int (*agp_init
)(struct drm_device
*dev
);
730 void (*agp_destroy
)(struct drm_device
*dev
);
735 * DRM driver structure. This structure represent the common code for
736 * a family of cards. There will one drm_device for each card present
740 int (*load
) (struct drm_device
*, unsigned long flags
);
741 int (*firstopen
) (struct drm_device
*);
742 int (*open
) (struct drm_device
*, struct drm_file
*);
743 void (*preclose
) (struct drm_device
*, struct drm_file
*file_priv
);
744 void (*postclose
) (struct drm_device
*, struct drm_file
*);
745 void (*lastclose
) (struct drm_device
*);
746 int (*unload
) (struct drm_device
*);
747 int (*suspend
) (struct drm_device
*, pm_message_t state
);
748 int (*resume
) (struct drm_device
*);
749 int (*dma_ioctl
) (struct drm_device
*dev
, void *data
, struct drm_file
*file_priv
);
750 int (*dma_quiescent
) (struct drm_device
*);
751 int (*context_dtor
) (struct drm_device
*dev
, int context
);
754 * get_vblank_counter - get raw hardware vblank counter
756 * @crtc: counter to fetch
758 * Driver callback for fetching a raw hardware vblank counter for @crtc.
759 * If a device doesn't have a hardware counter, the driver can simply
760 * return the value of drm_vblank_count. The DRM core will account for
761 * missed vblank events while interrupts where disabled based on system
764 * Wraparound handling and loss of events due to modesetting is dealt
765 * with in the DRM core code.
768 * Raw vblank counter value.
770 u32 (*get_vblank_counter
) (struct drm_device
*dev
, int crtc
);
773 * enable_vblank - enable vblank interrupt events
775 * @crtc: which irq to enable
777 * Enable vblank interrupts for @crtc. If the device doesn't have
778 * a hardware vblank counter, this routine should be a no-op, since
779 * interrupts will have to stay on to keep the count accurate.
782 * Zero on success, appropriate errno if the given @crtc's vblank
783 * interrupt cannot be enabled.
785 int (*enable_vblank
) (struct drm_device
*dev
, int crtc
);
788 * disable_vblank - disable vblank interrupt events
790 * @crtc: which irq to enable
792 * Disable vblank interrupts for @crtc. If the device doesn't have
793 * a hardware vblank counter, this routine should be a no-op, since
794 * interrupts will have to stay on to keep the count accurate.
796 void (*disable_vblank
) (struct drm_device
*dev
, int crtc
);
799 * Called by \c drm_device_is_agp. Typically used to determine if a
800 * card is really attached to AGP or not.
802 * \param dev DRM device handle
805 * One of three values is returned depending on whether or not the
806 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
807 * (return of 1), or may or may not be AGP (return of 2).
809 int (*device_is_agp
) (struct drm_device
*dev
);
812 * Called by vblank timestamping code.
814 * Return the current display scanout position from a crtc.
816 * \param dev DRM device.
817 * \param crtc Id of the crtc to query.
818 * \param *vpos Target location for current vertical scanout position.
819 * \param *hpos Target location for current horizontal scanout position.
821 * Returns vpos as a positive number while in active scanout area.
822 * Returns vpos as a negative number inside vblank, counting the number
823 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
824 * until start of active scanout / end of vblank."
826 * \return Flags, or'ed together as follows:
828 * DRM_SCANOUTPOS_VALID = Query successful.
829 * DRM_SCANOUTPOS_INVBL = Inside vblank.
830 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
831 * this flag means that returned position may be offset by a constant
832 * but unknown small number of scanlines wrt. real scanout position.
835 int (*get_scanout_position
) (struct drm_device
*dev
, int crtc
,
836 int *vpos
, int *hpos
);
839 * Called by \c drm_get_last_vbltimestamp. Should return a precise
840 * timestamp when the most recent VBLANK interval ended or will end.
842 * Specifically, the timestamp in @vblank_time should correspond as
843 * closely as possible to the time when the first video scanline of
844 * the video frame after the end of VBLANK will start scanning out,
845 * the time immediately after end of the VBLANK interval. If the
846 * @crtc is currently inside VBLANK, this will be a time in the future.
847 * If the @crtc is currently scanning out a frame, this will be the
848 * past start time of the current scanout. This is meant to adhere
849 * to the OpenML OML_sync_control extension specification.
851 * \param dev dev DRM device handle.
852 * \param crtc crtc for which timestamp should be returned.
853 * \param *max_error Maximum allowable timestamp error in nanoseconds.
854 * Implementation should strive to provide timestamp
855 * with an error of at most *max_error nanoseconds.
856 * Returns true upper bound on error for timestamp.
857 * \param *vblank_time Target location for returned vblank timestamp.
858 * \param flags 0 = Defaults, no special treatment needed.
859 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
860 * irq handler. Some drivers need to apply some workarounds
861 * for gpu-specific vblank irq quirks if flag is set.
864 * Zero if timestamping isn't supported in current display mode or a
865 * negative number on failure. A positive status code on success,
866 * which describes how the vblank_time timestamp was computed.
868 int (*get_vblank_timestamp
) (struct drm_device
*dev
, int crtc
,
870 struct timeval
*vblank_time
,
873 /* these have to be filled in */
875 irqreturn_t(*irq_handler
) (DRM_IRQ_ARGS
);
876 void (*irq_preinstall
) (struct drm_device
*dev
);
877 int (*irq_postinstall
) (struct drm_device
*dev
);
878 void (*irq_uninstall
) (struct drm_device
*dev
);
880 /* Master routines */
881 int (*master_create
)(struct drm_device
*dev
, struct drm_master
*master
);
882 void (*master_destroy
)(struct drm_device
*dev
, struct drm_master
*master
);
884 * master_set is called whenever the minor master is set.
885 * master_drop is called whenever the minor master is dropped.
888 int (*master_set
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
890 void (*master_drop
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
893 int (*debugfs_init
)(struct drm_minor
*minor
);
894 void (*debugfs_cleanup
)(struct drm_minor
*minor
);
897 * Driver-specific constructor for drm_gem_objects, to set up
898 * obj->driver_private.
900 * Returns 0 on success.
902 int (*gem_init_object
) (struct drm_gem_object
*obj
);
903 void (*gem_free_object
) (struct drm_gem_object
*obj
);
904 int (*gem_open_object
) (struct drm_gem_object
*, struct drm_file
*);
905 void (*gem_close_object
) (struct drm_gem_object
*, struct drm_file
*);
908 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
909 int (*prime_handle_to_fd
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
910 uint32_t handle
, uint32_t flags
, int *prime_fd
);
911 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
912 int (*prime_fd_to_handle
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
913 int prime_fd
, uint32_t *handle
);
914 /* export GEM -> dmabuf */
915 struct dma_buf
* (*gem_prime_export
)(struct drm_device
*dev
,
916 struct drm_gem_object
*obj
, int flags
);
917 /* import dmabuf -> GEM */
918 struct drm_gem_object
* (*gem_prime_import
)(struct drm_device
*dev
,
919 struct dma_buf
*dma_buf
);
920 /* low-level interface used by drm_gem_prime_{import,export} */
921 int (*gem_prime_pin
)(struct drm_gem_object
*obj
);
922 void (*gem_prime_unpin
)(struct drm_gem_object
*obj
);
923 struct sg_table
*(*gem_prime_get_sg_table
)(struct drm_gem_object
*obj
);
924 struct drm_gem_object
*(*gem_prime_import_sg_table
)(
925 struct drm_device
*dev
, size_t size
,
926 struct sg_table
*sgt
);
927 void *(*gem_prime_vmap
)(struct drm_gem_object
*obj
);
928 void (*gem_prime_vunmap
)(struct drm_gem_object
*obj
, void *vaddr
);
929 int (*gem_prime_mmap
)(struct drm_gem_object
*obj
,
930 struct vm_area_struct
*vma
);
932 /* vga arb irq handler */
933 void (*vgaarb_irq
)(struct drm_device
*dev
, bool state
);
935 /* dumb alloc support */
936 int (*dumb_create
)(struct drm_file
*file_priv
,
937 struct drm_device
*dev
,
938 struct drm_mode_create_dumb
*args
);
939 int (*dumb_map_offset
)(struct drm_file
*file_priv
,
940 struct drm_device
*dev
, uint32_t handle
,
942 int (*dumb_destroy
)(struct drm_file
*file_priv
,
943 struct drm_device
*dev
,
946 /* Driver private ops for this object */
947 const struct vm_operations_struct
*gem_vm_ops
;
958 const struct drm_ioctl_desc
*ioctls
;
960 const struct file_operations
*fops
;
962 struct pci_driver
*pci
;
963 struct platform_device
*platform_device
;
964 struct usb_driver
*usb
;
968 /* List of devices hanging off this driver */
969 struct list_head device_list
;
972 #define DRM_MINOR_UNASSIGNED 0
973 #define DRM_MINOR_LEGACY 1
974 #define DRM_MINOR_CONTROL 2
975 #define DRM_MINOR_RENDER 3
979 * debugfs node list. This structure represents a debugfs file to
980 * be created by the drm core
982 struct drm_debugfs_list
{
983 const char *name
; /** file name */
984 int (*show
)(struct seq_file
*, void*); /** show callback */
985 u32 driver_features
; /**< Required driver features for this entry */
989 * debugfs node structure. This structure represents a debugfs file.
991 struct drm_debugfs_node
{
992 struct list_head list
;
993 struct drm_minor
*minor
;
994 struct drm_debugfs_list
*debugfs_ent
;
999 * Info file list entry. This structure represents a debugfs or proc file to
1000 * be created by the drm core
1002 struct drm_info_list
{
1003 const char *name
; /** file name */
1004 int (*show
)(struct seq_file
*, void*); /** show callback */
1005 u32 driver_features
; /**< Required driver features for this entry */
1010 * debugfs node structure. This structure represents a debugfs file.
1012 struct drm_info_node
{
1013 struct list_head list
;
1014 struct drm_minor
*minor
;
1015 const struct drm_info_list
*info_ent
;
1016 struct dentry
*dent
;
1020 * DRM minor structure. This structure represents a drm minor number.
1023 int index
; /**< Minor device number */
1024 int type
; /**< Control or render */
1025 dev_t device
; /**< Device number for mknod */
1026 struct device kdev
; /**< Linux device */
1027 struct drm_device
*dev
;
1029 struct dentry
*debugfs_root
;
1031 struct list_head debugfs_list
;
1032 struct mutex debugfs_lock
; /* Protects debugfs_list. */
1034 struct drm_master
*master
; /* currently active master for this node */
1035 struct list_head master_list
;
1036 struct drm_mode_group mode_group
;
1039 /* mode specified on the command line */
1040 struct drm_cmdline_mode
{
1042 bool refresh_specified
;
1051 enum drm_connector_force force
;
1055 struct drm_pending_vblank_event
{
1056 struct drm_pending_event base
;
1058 struct drm_event_vblank event
;
1062 * DRM device structure. This structure represent a complete card that
1063 * may contain multiple heads.
1066 struct list_head driver_item
; /**< list of devices per driver */
1067 char *devname
; /**< For /proc/interrupts */
1068 int if_version
; /**< Highest interface version set */
1072 spinlock_t count_lock
; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1073 struct mutex struct_mutex
; /**< For others */
1076 /** \name Usage Counters */
1078 int open_count
; /**< Outstanding files open */
1079 atomic_t ioctl_count
; /**< Outstanding IOCTLs pending */
1080 atomic_t vma_count
; /**< Outstanding vma areas open */
1081 int buf_use
; /**< Buffers in use -- cannot alloc */
1082 atomic_t buf_alloc
; /**< Buffer allocation in progress */
1085 /** \name Performance counters */
1087 unsigned long counters
;
1088 enum drm_stat_type types
[15];
1089 atomic_t counts
[15];
1092 struct list_head filelist
;
1094 /** \name Memory management */
1096 struct list_head maplist
; /**< Linked list of regions */
1097 int map_count
; /**< Number of mappable regions */
1098 struct drm_open_hash map_hash
; /**< User token hash table for maps */
1100 /** \name Context handle management */
1102 struct list_head ctxlist
; /**< Linked list of context handles */
1103 int ctx_count
; /**< Number of context handles */
1104 struct mutex ctxlist_mutex
; /**< For ctxlist */
1108 struct list_head vmalist
; /**< List of vmas (for debugging) */
1112 /** \name DMA support */
1114 struct drm_device_dma
*dma
; /**< Optional pointer for DMA support */
1117 /** \name Context support */
1119 int irq_enabled
; /**< True if irq handler is enabled */
1120 __volatile__
long context_flag
; /**< Context swapping flag */
1121 int last_context
; /**< Last current context */
1124 struct work_struct work
;
1125 /** \name VBLANK IRQ support */
1129 * At load time, disabling the vblank interrupt won't be allowed since
1130 * old clients may not call the modeset ioctl and therefore misbehave.
1131 * Once the modeset ioctl *has* been called though, we can safely
1132 * disable them when unused.
1134 int vblank_disable_allowed
;
1136 wait_queue_head_t
*vbl_queue
; /**< VBLANK wait queue */
1137 atomic_t
*_vblank_count
; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1138 struct timeval
*_vblank_time
; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1139 spinlock_t vblank_time_lock
; /**< Protects vblank count and time updates during vblank enable/disable */
1140 spinlock_t vbl_lock
;
1141 atomic_t
*vblank_refcount
; /* number of users of vblank interruptsper crtc */
1142 u32
*last_vblank
; /* protected by dev->vbl_lock, used */
1143 /* for wraparound handling */
1144 int *vblank_enabled
; /* so we don't call enable more than
1146 int *vblank_inmodeset
; /* Display driver is setting mode */
1147 u32
*last_vblank_wait
; /* Last vblank seqno waited per CRTC */
1148 struct timer_list vblank_disable_timer
;
1150 u32 max_vblank_count
; /**< size of vblank counter register */
1155 struct list_head vblank_event_list
;
1156 spinlock_t event_lock
;
1160 struct drm_agp_head
*agp
; /**< AGP data */
1162 struct device
*dev
; /**< Device structure */
1163 struct pci_dev
*pdev
; /**< PCI device structure */
1164 int pci_vendor
; /**< PCI vendor id */
1165 int pci_device
; /**< PCI device id */
1167 struct pci_controller
*hose
;
1170 struct platform_device
*platformdev
; /**< Platform device struture */
1171 struct usb_device
*usbdev
;
1173 struct drm_sg_mem
*sg
; /**< Scatter gather memory */
1174 unsigned int num_crtcs
; /**< Number of CRTCs on this device */
1175 void *dev_private
; /**< device private data */
1177 struct address_space
*dev_mapping
;
1178 struct drm_sigdata sigdata
; /**< For block_all_signals */
1181 struct drm_driver
*driver
;
1182 struct drm_local_map
*agp_buffer_map
;
1183 unsigned int agp_buffer_token
;
1184 struct drm_minor
*control
; /**< Control node for card */
1185 struct drm_minor
*primary
; /**< render type primary screen head */
1187 struct drm_mode_config mode_config
; /**< Current mode config */
1189 /** \name GEM information */
1191 spinlock_t object_name_lock
;
1192 struct idr object_name_idr
;
1194 int switch_power_state
;
1196 atomic_t unplugged
; /* device has been unplugged or gone away */
1199 #define DRM_SWITCH_POWER_ON 0
1200 #define DRM_SWITCH_POWER_OFF 1
1201 #define DRM_SWITCH_POWER_CHANGING 2
1203 static __inline__
int drm_core_check_feature(struct drm_device
*dev
,
1206 return ((dev
->driver
->driver_features
& feature
) ? 1 : 0);
1209 static inline int drm_dev_to_irq(struct drm_device
*dev
)
1211 return dev
->driver
->bus
->get_irq(dev
);
1214 static inline void drm_device_set_unplugged(struct drm_device
*dev
)
1217 atomic_set(&dev
->unplugged
, 1);
1220 static inline int drm_device_is_unplugged(struct drm_device
*dev
)
1222 int ret
= atomic_read(&dev
->unplugged
);
1227 static inline bool drm_modeset_is_locked(struct drm_device
*dev
)
1229 return mutex_is_locked(&dev
->mode_config
.mutex
);
1232 /******************************************************************/
1233 /** \name Internal function definitions */
1236 /* Driver support (drm_drv.h) */
1237 extern long drm_ioctl(struct file
*filp
,
1238 unsigned int cmd
, unsigned long arg
);
1239 extern long drm_compat_ioctl(struct file
*filp
,
1240 unsigned int cmd
, unsigned long arg
);
1241 extern int drm_lastclose(struct drm_device
*dev
);
1243 /* Device support (drm_fops.h) */
1244 extern struct mutex drm_global_mutex
;
1245 extern int drm_open(struct inode
*inode
, struct file
*filp
);
1246 extern int drm_stub_open(struct inode
*inode
, struct file
*filp
);
1247 extern ssize_t
drm_read(struct file
*filp
, char __user
*buffer
,
1248 size_t count
, loff_t
*offset
);
1249 extern int drm_release(struct inode
*inode
, struct file
*filp
);
1251 /* Mapping support (drm_vm.h) */
1252 extern int drm_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1253 extern int drm_mmap_locked(struct file
*filp
, struct vm_area_struct
*vma
);
1254 extern void drm_vm_open_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1255 extern void drm_vm_close_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1256 extern unsigned int drm_poll(struct file
*filp
, struct poll_table_struct
*wait
);
1258 /* Memory management support (drm_memory.h) */
1259 #include <drm/drm_memory.h>
1261 /* Misc. IOCTL support (drm_ioctl.h) */
1262 extern int drm_irq_by_busid(struct drm_device
*dev
, void *data
,
1263 struct drm_file
*file_priv
);
1264 extern int drm_getunique(struct drm_device
*dev
, void *data
,
1265 struct drm_file
*file_priv
);
1266 extern int drm_setunique(struct drm_device
*dev
, void *data
,
1267 struct drm_file
*file_priv
);
1268 extern int drm_getmap(struct drm_device
*dev
, void *data
,
1269 struct drm_file
*file_priv
);
1270 extern int drm_getclient(struct drm_device
*dev
, void *data
,
1271 struct drm_file
*file_priv
);
1272 extern int drm_getstats(struct drm_device
*dev
, void *data
,
1273 struct drm_file
*file_priv
);
1274 extern int drm_getcap(struct drm_device
*dev
, void *data
,
1275 struct drm_file
*file_priv
);
1276 extern int drm_setversion(struct drm_device
*dev
, void *data
,
1277 struct drm_file
*file_priv
);
1278 extern int drm_noop(struct drm_device
*dev
, void *data
,
1279 struct drm_file
*file_priv
);
1281 /* Context IOCTL support (drm_context.h) */
1282 extern int drm_resctx(struct drm_device
*dev
, void *data
,
1283 struct drm_file
*file_priv
);
1284 extern int drm_addctx(struct drm_device
*dev
, void *data
,
1285 struct drm_file
*file_priv
);
1286 extern int drm_getctx(struct drm_device
*dev
, void *data
,
1287 struct drm_file
*file_priv
);
1288 extern int drm_switchctx(struct drm_device
*dev
, void *data
,
1289 struct drm_file
*file_priv
);
1290 extern int drm_newctx(struct drm_device
*dev
, void *data
,
1291 struct drm_file
*file_priv
);
1292 extern int drm_rmctx(struct drm_device
*dev
, void *data
,
1293 struct drm_file
*file_priv
);
1295 extern void drm_legacy_ctxbitmap_init(struct drm_device
*dev
);
1296 extern void drm_legacy_ctxbitmap_cleanup(struct drm_device
*dev
);
1297 extern void drm_legacy_ctxbitmap_release(struct drm_device
*dev
,
1298 struct drm_file
*file_priv
);
1300 extern int drm_setsareactx(struct drm_device
*dev
, void *data
,
1301 struct drm_file
*file_priv
);
1302 extern int drm_getsareactx(struct drm_device
*dev
, void *data
,
1303 struct drm_file
*file_priv
);
1305 /* Authentication IOCTL support (drm_auth.h) */
1306 extern int drm_getmagic(struct drm_device
*dev
, void *data
,
1307 struct drm_file
*file_priv
);
1308 extern int drm_authmagic(struct drm_device
*dev
, void *data
,
1309 struct drm_file
*file_priv
);
1310 extern int drm_remove_magic(struct drm_master
*master
, drm_magic_t magic
);
1312 /* Cache management (drm_cache.c) */
1313 void drm_clflush_pages(struct page
*pages
[], unsigned long num_pages
);
1314 void drm_clflush_sg(struct sg_table
*st
);
1315 void drm_clflush_virt_range(char *addr
, unsigned long length
);
1317 /* Locking IOCTL support (drm_lock.h) */
1318 extern int drm_lock(struct drm_device
*dev
, void *data
,
1319 struct drm_file
*file_priv
);
1320 extern int drm_unlock(struct drm_device
*dev
, void *data
,
1321 struct drm_file
*file_priv
);
1322 extern int drm_lock_free(struct drm_lock_data
*lock_data
, unsigned int context
);
1323 extern void drm_idlelock_take(struct drm_lock_data
*lock_data
);
1324 extern void drm_idlelock_release(struct drm_lock_data
*lock_data
);
1327 * These are exported to drivers so that they can implement fencing using
1328 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1331 extern int drm_i_have_hw_lock(struct drm_device
*dev
, struct drm_file
*file_priv
);
1333 /* Buffer management support (drm_bufs.h) */
1334 extern int drm_addbufs_agp(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1335 extern int drm_addbufs_pci(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1336 extern int drm_addmap(struct drm_device
*dev
, resource_size_t offset
,
1337 unsigned int size
, enum drm_map_type type
,
1338 enum drm_map_flags flags
, struct drm_local_map
**map_ptr
);
1339 extern int drm_addmap_ioctl(struct drm_device
*dev
, void *data
,
1340 struct drm_file
*file_priv
);
1341 extern int drm_rmmap(struct drm_device
*dev
, struct drm_local_map
*map
);
1342 extern int drm_rmmap_locked(struct drm_device
*dev
, struct drm_local_map
*map
);
1343 extern int drm_rmmap_ioctl(struct drm_device
*dev
, void *data
,
1344 struct drm_file
*file_priv
);
1345 extern int drm_addbufs(struct drm_device
*dev
, void *data
,
1346 struct drm_file
*file_priv
);
1347 extern int drm_infobufs(struct drm_device
*dev
, void *data
,
1348 struct drm_file
*file_priv
);
1349 extern int drm_markbufs(struct drm_device
*dev
, void *data
,
1350 struct drm_file
*file_priv
);
1351 extern int drm_freebufs(struct drm_device
*dev
, void *data
,
1352 struct drm_file
*file_priv
);
1353 extern int drm_mapbufs(struct drm_device
*dev
, void *data
,
1354 struct drm_file
*file_priv
);
1355 extern int drm_dma_ioctl(struct drm_device
*dev
, void *data
,
1356 struct drm_file
*file_priv
);
1358 /* DMA support (drm_dma.h) */
1359 extern int drm_legacy_dma_setup(struct drm_device
*dev
);
1360 extern void drm_legacy_dma_takedown(struct drm_device
*dev
);
1361 extern void drm_free_buffer(struct drm_device
*dev
, struct drm_buf
* buf
);
1362 extern void drm_core_reclaim_buffers(struct drm_device
*dev
,
1363 struct drm_file
*filp
);
1365 /* IRQ support (drm_irq.h) */
1366 extern int drm_control(struct drm_device
*dev
, void *data
,
1367 struct drm_file
*file_priv
);
1368 extern int drm_irq_install(struct drm_device
*dev
);
1369 extern int drm_irq_uninstall(struct drm_device
*dev
);
1371 extern int drm_vblank_init(struct drm_device
*dev
, int num_crtcs
);
1372 extern int drm_wait_vblank(struct drm_device
*dev
, void *data
,
1373 struct drm_file
*filp
);
1374 extern u32
drm_vblank_count(struct drm_device
*dev
, int crtc
);
1375 extern u32
drm_vblank_count_and_time(struct drm_device
*dev
, int crtc
,
1376 struct timeval
*vblanktime
);
1377 extern void drm_send_vblank_event(struct drm_device
*dev
, int crtc
,
1378 struct drm_pending_vblank_event
*e
);
1379 extern bool drm_handle_vblank(struct drm_device
*dev
, int crtc
);
1380 extern int drm_vblank_get(struct drm_device
*dev
, int crtc
);
1381 extern void drm_vblank_put(struct drm_device
*dev
, int crtc
);
1382 extern void drm_vblank_off(struct drm_device
*dev
, int crtc
);
1383 extern void drm_vblank_cleanup(struct drm_device
*dev
);
1384 extern u32
drm_get_last_vbltimestamp(struct drm_device
*dev
, int crtc
,
1385 struct timeval
*tvblank
, unsigned flags
);
1386 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device
*dev
,
1387 int crtc
, int *max_error
,
1388 struct timeval
*vblank_time
,
1390 struct drm_crtc
*refcrtc
);
1391 extern void drm_calc_timestamping_constants(struct drm_crtc
*crtc
);
1394 drm_mode_parse_command_line_for_connector(const char *mode_option
,
1395 struct drm_connector
*connector
,
1396 struct drm_cmdline_mode
*mode
);
1398 extern struct drm_display_mode
*
1399 drm_mode_create_from_cmdline_mode(struct drm_device
*dev
,
1400 struct drm_cmdline_mode
*cmd
);
1402 extern int drm_display_mode_from_videomode(const struct videomode
*vm
,
1403 struct drm_display_mode
*dmode
);
1404 extern int of_get_drm_display_mode(struct device_node
*np
,
1405 struct drm_display_mode
*dmode
,
1408 /* Modesetting support */
1409 extern void drm_vblank_pre_modeset(struct drm_device
*dev
, int crtc
);
1410 extern void drm_vblank_post_modeset(struct drm_device
*dev
, int crtc
);
1411 extern int drm_modeset_ctl(struct drm_device
*dev
, void *data
,
1412 struct drm_file
*file_priv
);
1414 /* AGP/GART support (drm_agpsupport.h) */
1416 #include <drm/drm_agpsupport.h>
1418 /* Stub support (drm_stub.h) */
1419 extern int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
1420 struct drm_file
*file_priv
);
1421 extern int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
1422 struct drm_file
*file_priv
);
1423 struct drm_master
*drm_master_create(struct drm_minor
*minor
);
1424 extern struct drm_master
*drm_master_get(struct drm_master
*master
);
1425 extern void drm_master_put(struct drm_master
**master
);
1427 extern void drm_put_dev(struct drm_device
*dev
);
1428 extern int drm_put_minor(struct drm_minor
**minor
);
1429 extern void drm_unplug_dev(struct drm_device
*dev
);
1430 extern unsigned int drm_debug
;
1432 extern unsigned int drm_vblank_offdelay
;
1433 extern unsigned int drm_timestamp_precision
;
1434 extern unsigned int drm_timestamp_monotonic
;
1436 extern struct class *drm_class
;
1437 extern struct dentry
*drm_debugfs_root
;
1439 extern struct idr drm_minors_idr
;
1441 extern struct drm_local_map
*drm_getsarea(struct drm_device
*dev
);
1443 /* Debugfs support */
1444 #if defined(CONFIG_DEBUG_FS)
1445 extern int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1446 struct dentry
*root
);
1447 extern int drm_debugfs_create_files(struct drm_info_list
*files
, int count
,
1448 struct dentry
*root
, struct drm_minor
*minor
);
1449 extern int drm_debugfs_remove_files(struct drm_info_list
*files
, int count
,
1450 struct drm_minor
*minor
);
1451 extern int drm_debugfs_cleanup(struct drm_minor
*minor
);
1454 /* Info file support */
1455 extern int drm_name_info(struct seq_file
*m
, void *data
);
1456 extern int drm_vm_info(struct seq_file
*m
, void *data
);
1457 extern int drm_bufs_info(struct seq_file
*m
, void *data
);
1458 extern int drm_vblank_info(struct seq_file
*m
, void *data
);
1459 extern int drm_clients_info(struct seq_file
*m
, void* data
);
1460 extern int drm_gem_name_info(struct seq_file
*m
, void *data
);
1463 extern struct dma_buf
*drm_gem_prime_export(struct drm_device
*dev
,
1464 struct drm_gem_object
*obj
, int flags
);
1465 extern int drm_gem_prime_handle_to_fd(struct drm_device
*dev
,
1466 struct drm_file
*file_priv
, uint32_t handle
, uint32_t flags
,
1468 extern struct drm_gem_object
*drm_gem_prime_import(struct drm_device
*dev
,
1469 struct dma_buf
*dma_buf
);
1470 extern int drm_gem_prime_fd_to_handle(struct drm_device
*dev
,
1471 struct drm_file
*file_priv
, int prime_fd
, uint32_t *handle
);
1472 extern void drm_gem_dmabuf_release(struct dma_buf
*dma_buf
);
1474 extern int drm_prime_handle_to_fd_ioctl(struct drm_device
*dev
, void *data
,
1475 struct drm_file
*file_priv
);
1476 extern int drm_prime_fd_to_handle_ioctl(struct drm_device
*dev
, void *data
,
1477 struct drm_file
*file_priv
);
1479 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table
*sgt
, struct page
**pages
,
1480 dma_addr_t
*addrs
, int max_pages
);
1481 extern struct sg_table
*drm_prime_pages_to_sg(struct page
**pages
, int nr_pages
);
1482 extern void drm_prime_gem_destroy(struct drm_gem_object
*obj
, struct sg_table
*sg
);
1484 int drm_gem_dumb_destroy(struct drm_file
*file
,
1485 struct drm_device
*dev
,
1488 void drm_prime_init_file_private(struct drm_prime_file_private
*prime_fpriv
);
1489 void drm_prime_destroy_file_private(struct drm_prime_file_private
*prime_fpriv
);
1490 int drm_prime_lookup_buf_handle(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
, uint32_t *handle
);
1491 void drm_prime_remove_buf_handle(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
);
1494 extern int drm_vma_info(struct seq_file
*m
, void *data
);
1497 /* Scatter Gather Support (drm_scatter.h) */
1498 extern void drm_legacy_sg_cleanup(struct drm_device
*dev
);
1499 extern int drm_sg_alloc(struct drm_device
*dev
, void *data
,
1500 struct drm_file
*file_priv
);
1501 extern int drm_sg_free(struct drm_device
*dev
, void *data
,
1502 struct drm_file
*file_priv
);
1504 /* ATI PCIGART support (ati_pcigart.h) */
1505 extern int drm_ati_pcigart_init(struct drm_device
*dev
,
1506 struct drm_ati_pcigart_info
* gart_info
);
1507 extern int drm_ati_pcigart_cleanup(struct drm_device
*dev
,
1508 struct drm_ati_pcigart_info
* gart_info
);
1510 extern drm_dma_handle_t
*drm_pci_alloc(struct drm_device
*dev
, size_t size
,
1512 extern void __drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1513 extern void drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1515 /* sysfs support (drm_sysfs.c) */
1516 struct drm_sysfs_class
;
1517 extern struct class *drm_sysfs_create(struct module
*owner
, char *name
);
1518 extern void drm_sysfs_destroy(void);
1519 extern int drm_sysfs_device_add(struct drm_minor
*minor
);
1520 extern void drm_sysfs_hotplug_event(struct drm_device
*dev
);
1521 extern void drm_sysfs_device_remove(struct drm_minor
*minor
);
1522 extern int drm_sysfs_connector_add(struct drm_connector
*connector
);
1523 extern void drm_sysfs_connector_remove(struct drm_connector
*connector
);
1525 /* Graphics Execution Manager library functions (drm_gem.c) */
1526 int drm_gem_init(struct drm_device
*dev
);
1527 void drm_gem_destroy(struct drm_device
*dev
);
1528 void drm_gem_object_release(struct drm_gem_object
*obj
);
1529 void drm_gem_object_free(struct kref
*kref
);
1530 struct drm_gem_object
*drm_gem_object_alloc(struct drm_device
*dev
,
1532 int drm_gem_object_init(struct drm_device
*dev
,
1533 struct drm_gem_object
*obj
, size_t size
);
1534 void drm_gem_private_object_init(struct drm_device
*dev
,
1535 struct drm_gem_object
*obj
, size_t size
);
1536 void drm_gem_vm_open(struct vm_area_struct
*vma
);
1537 void drm_gem_vm_close(struct vm_area_struct
*vma
);
1538 int drm_gem_mmap_obj(struct drm_gem_object
*obj
, unsigned long obj_size
,
1539 struct vm_area_struct
*vma
);
1540 int drm_gem_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1542 #include <drm/drm_global.h>
1545 drm_gem_object_reference(struct drm_gem_object
*obj
)
1547 kref_get(&obj
->refcount
);
1551 drm_gem_object_unreference(struct drm_gem_object
*obj
)
1554 kref_put(&obj
->refcount
, drm_gem_object_free
);
1558 drm_gem_object_unreference_unlocked(struct drm_gem_object
*obj
)
1560 if (obj
&& !atomic_add_unless(&obj
->refcount
.refcount
, -1, 1)) {
1561 struct drm_device
*dev
= obj
->dev
;
1563 mutex_lock(&dev
->struct_mutex
);
1564 if (likely(atomic_dec_and_test(&obj
->refcount
.refcount
)))
1565 drm_gem_object_free(&obj
->refcount
);
1566 mutex_unlock(&dev
->struct_mutex
);
1570 int drm_gem_handle_create(struct drm_file
*file_priv
,
1571 struct drm_gem_object
*obj
,
1573 int drm_gem_handle_delete(struct drm_file
*filp
, u32 handle
);
1576 drm_gem_object_handle_reference(struct drm_gem_object
*obj
)
1578 drm_gem_object_reference(obj
);
1579 atomic_inc(&obj
->handle_count
);
1582 void drm_gem_object_handle_unreference_unlocked(struct drm_gem_object
*obj
);
1584 void drm_gem_free_mmap_offset(struct drm_gem_object
*obj
);
1585 int drm_gem_create_mmap_offset(struct drm_gem_object
*obj
);
1586 int drm_gem_create_mmap_offset_size(struct drm_gem_object
*obj
, size_t size
);
1588 struct page
**drm_gem_get_pages(struct drm_gem_object
*obj
, gfp_t gfpmask
);
1589 void drm_gem_put_pages(struct drm_gem_object
*obj
, struct page
**pages
,
1590 bool dirty
, bool accessed
);
1592 struct drm_gem_object
*drm_gem_object_lookup(struct drm_device
*dev
,
1593 struct drm_file
*filp
,
1595 int drm_gem_close_ioctl(struct drm_device
*dev
, void *data
,
1596 struct drm_file
*file_priv
);
1597 int drm_gem_flink_ioctl(struct drm_device
*dev
, void *data
,
1598 struct drm_file
*file_priv
);
1599 int drm_gem_open_ioctl(struct drm_device
*dev
, void *data
,
1600 struct drm_file
*file_priv
);
1601 void drm_gem_open(struct drm_device
*dev
, struct drm_file
*file_private
);
1602 void drm_gem_release(struct drm_device
*dev
, struct drm_file
*file_private
);
1604 extern void drm_core_ioremap(struct drm_local_map
*map
, struct drm_device
*dev
);
1605 extern void drm_core_ioremap_wc(struct drm_local_map
*map
, struct drm_device
*dev
);
1606 extern void drm_core_ioremapfree(struct drm_local_map
*map
, struct drm_device
*dev
);
1608 static __inline__
struct drm_local_map
*drm_core_findmap(struct drm_device
*dev
,
1611 struct drm_map_list
*_entry
;
1612 list_for_each_entry(_entry
, &dev
->maplist
, head
)
1613 if (_entry
->user_token
== token
)
1618 static __inline__
void drm_core_dropmap(struct drm_local_map
*map
)
1622 #include <drm/drm_mem_util.h>
1624 extern int drm_fill_in_dev(struct drm_device
*dev
,
1625 const struct pci_device_id
*ent
,
1626 struct drm_driver
*driver
);
1627 int drm_get_minor(struct drm_device
*dev
, struct drm_minor
**minor
, int type
);
1631 static __inline__
int drm_pci_device_is_agp(struct drm_device
*dev
)
1633 if (dev
->driver
->device_is_agp
!= NULL
) {
1634 int err
= (*dev
->driver
->device_is_agp
) (dev
);
1641 return pci_find_capability(dev
->pdev
, PCI_CAP_ID_AGP
);
1644 extern int drm_pci_init(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1645 extern void drm_pci_exit(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1646 extern int drm_get_pci_dev(struct pci_dev
*pdev
,
1647 const struct pci_device_id
*ent
,
1648 struct drm_driver
*driver
);
1650 #define DRM_PCIE_SPEED_25 1
1651 #define DRM_PCIE_SPEED_50 2
1652 #define DRM_PCIE_SPEED_80 4
1654 extern int drm_pcie_get_speed_cap_mask(struct drm_device
*dev
, u32
*speed_mask
);
1656 /* platform section */
1657 extern int drm_platform_init(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1658 extern void drm_platform_exit(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1660 /* returns true if currently okay to sleep */
1661 static __inline__
bool drm_can_sleep(void)
1663 if (in_atomic() || in_dbg_master() || irqs_disabled())
1668 #endif /* __KERNEL__ */