3 * Private header for Direct Rendering Manager
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
10 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
11 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
12 * Copyright (c) 2009-2010, Code Aurora Forum.
13 * All rights reserved.
15 * Permission is hereby granted, free of charge, to any person obtaining a
16 * copy of this software and associated documentation files (the "Software"),
17 * to deal in the Software without restriction, including without limitation
18 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
19 * and/or sell copies of the Software, and to permit persons to whom the
20 * Software is furnished to do so, subject to the following conditions:
22 * The above copyright notice and this permission notice (including the next
23 * paragraph) shall be included in all copies or substantial portions of the
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
29 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
30 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
31 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
32 * OTHER DEALINGS IN THE SOFTWARE.
40 /* add include of current.h so that "current" is defined
41 * before static inline funcs in wait.h. Doing this so we
42 * can build the DRM (part of PI DRI). 4/21/2000 S + B */
43 #include <asm/current.h>
44 #endif /* __alpha__ */
45 #include <linux/kernel.h>
46 #include <linux/kref.h>
47 #include <linux/miscdevice.h>
49 #include <linux/init.h>
50 #include <linux/file.h>
51 #include <linux/platform_device.h>
52 #include <linux/pci.h>
53 #include <linux/jiffies.h>
54 #include <linux/dma-mapping.h>
56 #include <linux/cdev.h>
57 #include <linux/mutex.h>
59 #include <linux/slab.h>
60 #include <linux/ratelimit.h>
61 #if defined(__alpha__) || defined(__powerpc__)
62 #include <asm/pgtable.h> /* For pte_wrprotect */
65 #include <asm/uaccess.h>
66 #include <linux/types.h>
67 #include <linux/agp_backend.h>
68 #include <linux/workqueue.h>
69 #include <linux/poll.h>
70 #include <asm/pgalloc.h>
72 #include <drm/drm_sarea.h>
73 #include <drm/drm_vma_manager.h>
75 #include <linux/idr.h>
77 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
87 #include <drm/drm_os_linux.h>
88 #include <drm/drm_hashtab.h>
89 #include <drm/drm_mm.h>
92 * 4 debug categories are defined:
94 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...
95 * This is the category used by the DRM_DEBUG() macro.
97 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...
98 * This is the category used by the DRM_DEBUG_DRIVER() macro.
100 * KMS: used in the modesetting code.
101 * This is the category used by the DRM_DEBUG_KMS() macro.
103 * PRIME: used in the prime code.
104 * This is the category used by the DRM_DEBUG_PRIME() macro.
106 * Enabling verbose debug messages is done through the drm.debug parameter,
107 * each category being enabled by a bit.
109 * drm.debug=0x1 will enable CORE messages
110 * drm.debug=0x2 will enable DRIVER messages
111 * drm.debug=0x3 will enable CORE and DRIVER messages
113 * drm.debug=0xf will enable all messages
115 * An interesting feature is that it's possible to enable verbose logging at
116 * run-time by echoing the debug value in its sysfs node:
117 * # echo 0xf > /sys/module/drm/parameters/debug
119 #define DRM_UT_CORE 0x01
120 #define DRM_UT_DRIVER 0x02
121 #define DRM_UT_KMS 0x04
122 #define DRM_UT_PRIME 0x08
124 extern __printf(2, 3)
125 void drm_ut_debug_printk(const char *function_name
,
126 const char *format
, ...);
127 extern __printf(2, 3)
128 int drm_err(const char *func
, const char *format
, ...);
130 /***********************************************************************/
131 /** \name DRM template customization defaults */
134 /* driver capabilities and requirements mask */
135 #define DRIVER_USE_AGP 0x1
136 #define DRIVER_PCI_DMA 0x8
137 #define DRIVER_SG 0x10
138 #define DRIVER_HAVE_DMA 0x20
139 #define DRIVER_HAVE_IRQ 0x40
140 #define DRIVER_IRQ_SHARED 0x80
141 #define DRIVER_GEM 0x1000
142 #define DRIVER_MODESET 0x2000
143 #define DRIVER_PRIME 0x4000
144 #define DRIVER_RENDER 0x8000
146 #define DRIVER_BUS_PCI 0x1
147 #define DRIVER_BUS_PLATFORM 0x2
148 #define DRIVER_BUS_USB 0x3
149 #define DRIVER_BUS_HOST1X 0x4
151 /***********************************************************************/
152 /** \name Begin the DRM... */
155 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
156 also include looping detection. */
158 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
159 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
160 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
162 #define DRM_MAP_HASH_OFFSET 0x10000000
166 /***********************************************************************/
167 /** \name Macros to make printk easier */
173 * \param fmt printf() like format string.
174 * \param arg arguments
176 #define DRM_ERROR(fmt, ...) \
177 drm_err(__func__, fmt, ##__VA_ARGS__)
180 * Rate limited error output. Like DRM_ERROR() but won't flood the log.
182 * \param fmt printf() like format string.
183 * \param arg arguments
185 #define DRM_ERROR_RATELIMITED(fmt, ...) \
187 static DEFINE_RATELIMIT_STATE(_rs, \
188 DEFAULT_RATELIMIT_INTERVAL, \
189 DEFAULT_RATELIMIT_BURST); \
191 if (__ratelimit(&_rs)) \
192 drm_err(__func__, fmt, ##__VA_ARGS__); \
195 #define DRM_INFO(fmt, ...) \
196 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
198 #define DRM_INFO_ONCE(fmt, ...) \
199 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
204 * \param fmt printf() like format string.
205 * \param arg arguments
208 #define DRM_DEBUG(fmt, args...) \
210 if (unlikely(drm_debug & DRM_UT_CORE)) \
211 drm_ut_debug_printk(__func__, fmt, ##args); \
214 #define DRM_DEBUG_DRIVER(fmt, args...) \
216 if (unlikely(drm_debug & DRM_UT_DRIVER)) \
217 drm_ut_debug_printk(__func__, fmt, ##args); \
219 #define DRM_DEBUG_KMS(fmt, args...) \
221 if (unlikely(drm_debug & DRM_UT_KMS)) \
222 drm_ut_debug_printk(__func__, fmt, ##args); \
224 #define DRM_DEBUG_PRIME(fmt, args...) \
226 if (unlikely(drm_debug & DRM_UT_PRIME)) \
227 drm_ut_debug_printk(__func__, fmt, ##args); \
230 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
231 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
232 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
233 #define DRM_DEBUG(fmt, arg...) do { } while (0)
238 /***********************************************************************/
239 /** \name Internal types and structures */
242 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
244 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
247 * Test that the hardware lock is held by the caller, returning otherwise.
249 * \param dev DRM device.
250 * \param filp file pointer of the caller.
252 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
254 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
255 _file_priv->master->lock.file_priv != _file_priv) { \
256 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
257 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
258 _file_priv->master->lock.file_priv, _file_priv); \
264 * Ioctl function type.
266 * \param inode device inode.
267 * \param file_priv DRM file private pointer.
268 * \param cmd command.
269 * \param arg argument.
271 typedef int drm_ioctl_t(struct drm_device
*dev
, void *data
,
272 struct drm_file
*file_priv
);
274 typedef int drm_ioctl_compat_t(struct file
*filp
, unsigned int cmd
,
277 #define DRM_IOCTL_NR(n) _IOC_NR(n)
278 #define DRM_MAJOR 226
281 #define DRM_MASTER 0x2
282 #define DRM_ROOT_ONLY 0x4
283 #define DRM_CONTROL_ALLOW 0x8
284 #define DRM_UNLOCKED 0x10
285 #define DRM_RENDER_ALLOW 0x20
287 struct drm_ioctl_desc
{
291 unsigned int cmd_drv
;
296 * Creates a driver or general drm_ioctl_desc array entry for the given
297 * ioctl, for use by drm_ioctl().
300 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
301 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
303 struct drm_magic_entry
{
304 struct list_head head
;
305 struct drm_hash_item hash_item
;
306 struct drm_file
*priv
;
309 struct drm_vma_entry
{
310 struct list_head head
;
311 struct vm_area_struct
*vma
;
319 int idx
; /**< Index into master buflist */
320 int total
; /**< Buffer size */
321 int order
; /**< log-base-2(total) */
322 int used
; /**< Amount of buffer in use (for DMA) */
323 unsigned long offset
; /**< Byte offset (used internally) */
324 void *address
; /**< Address of buffer */
325 unsigned long bus_address
; /**< Bus address of buffer */
326 struct drm_buf
*next
; /**< Kernel-only: used for free list */
327 __volatile__
int waiting
; /**< On kernel DMA queue */
328 __volatile__
int pending
; /**< On hardware DMA queue */
329 struct drm_file
*file_priv
; /**< Private of holding file descr */
330 int context
; /**< Kernel queue for this buffer */
331 int while_locked
; /**< Dispatch this buffer while locked */
339 } list
; /**< Which list we're on */
341 int dev_priv_size
; /**< Size of buffer private storage */
342 void *dev_private
; /**< Per-buffer private storage */
345 /** bufs is one longer than it has to be */
346 struct drm_waitlist
{
347 int count
; /**< Number of possible buffers */
348 struct drm_buf
**bufs
; /**< List of pointers to buffers */
349 struct drm_buf
**rp
; /**< Read pointer */
350 struct drm_buf
**wp
; /**< Write pointer */
351 struct drm_buf
**end
; /**< End pointer */
352 spinlock_t read_lock
;
353 spinlock_t write_lock
;
356 struct drm_freelist
{
357 int initialized
; /**< Freelist in use */
358 atomic_t count
; /**< Number of free buffers */
359 struct drm_buf
*next
; /**< End pointer */
361 wait_queue_head_t waiting
; /**< Processes waiting on free bufs */
362 int low_mark
; /**< Low water mark */
363 int high_mark
; /**< High water mark */
364 atomic_t wfh
; /**< If waiting for high mark */
368 typedef struct drm_dma_handle
{
375 * Buffer entry. There is one of this for each buffer size order.
377 struct drm_buf_entry
{
378 int buf_size
; /**< size */
379 int buf_count
; /**< number of buffers */
380 struct drm_buf
*buflist
; /**< buffer list */
383 struct drm_dma_handle
**seglist
;
385 struct drm_freelist freelist
;
388 /* Event queued up for userspace to read */
389 struct drm_pending_event
{
390 struct drm_event
*event
;
391 struct list_head link
;
392 struct drm_file
*file_priv
;
393 pid_t pid
; /* pid of requester, no guarantee it's valid by the time
394 we deliver the event, for tracing only */
395 void (*destroy
)(struct drm_pending_event
*event
);
398 /* initial implementaton using a linked list - todo hashtab */
399 struct drm_prime_file_private
{
400 struct list_head head
;
404 /** File private data */
406 unsigned always_authenticated
:1;
407 unsigned authenticated
:1;
408 unsigned is_master
:1; /* this file private is a master for a minor */
409 /* true when the client has asked us to expose stereo 3D mode flags */
410 unsigned stereo_allowed
:1;
415 struct list_head lhead
;
416 struct drm_minor
*minor
;
417 unsigned long lock_count
;
419 /** Mapping of mm object handles to object pointers. */
420 struct idr object_idr
;
421 /** Lock for synchronization of access to object_idr. */
422 spinlock_t table_lock
;
427 struct drm_master
*master
; /* master this node is currently associated with
428 N.B. not always minor->master */
430 * fbs - List of framebuffers associated with this file.
432 * Protected by fbs_lock. Note that the fbs list holds a reference on
433 * the fb object to prevent it from untimely disappearing.
435 struct list_head fbs
;
436 struct mutex fbs_lock
;
438 wait_queue_head_t event_wait
;
439 struct list_head event_list
;
442 struct drm_prime_file_private prime
;
447 atomic_t use_count
; /**< Outstanding uses (+1) */
448 atomic_t finalization
; /**< Finalization in progress */
449 atomic_t block_count
; /**< Count of processes waiting */
450 atomic_t block_read
; /**< Queue blocked for reads */
451 wait_queue_head_t read_queue
; /**< Processes waiting on block_read */
452 atomic_t block_write
; /**< Queue blocked for writes */
453 wait_queue_head_t write_queue
; /**< Processes waiting on block_write */
454 atomic_t total_queued
; /**< Total queued statistic */
455 atomic_t total_flushed
; /**< Total flushes statistic */
456 atomic_t total_locks
; /**< Total locks statistics */
457 enum drm_ctx_flags flags
; /**< Context preserving and 2D-only */
458 struct drm_waitlist waitlist
; /**< Pending buffers */
459 wait_queue_head_t flush_queue
; /**< Processes waiting until flush */
465 struct drm_lock_data
{
466 struct drm_hw_lock
*hw_lock
; /**< Hardware lock */
467 /** Private of lock holder's file (NULL=kernel) */
468 struct drm_file
*file_priv
;
469 wait_queue_head_t lock_queue
; /**< Queue of blocked processes */
470 unsigned long lock_time
; /**< Time of last lock in jiffies */
472 uint32_t kernel_waiters
;
473 uint32_t user_waiters
;
480 struct drm_device_dma
{
482 struct drm_buf_entry bufs
[DRM_MAX_ORDER
+ 1]; /**< buffers, grouped by their size order */
483 int buf_count
; /**< total number of buffers */
484 struct drm_buf
**buflist
; /**< Vector of pointers into drm_device_dma::bufs */
486 int page_count
; /**< number of pages */
487 unsigned long *pagelist
; /**< page list */
488 unsigned long byte_count
;
490 _DRM_DMA_USE_AGP
= 0x01,
491 _DRM_DMA_USE_SG
= 0x02,
492 _DRM_DMA_USE_FB
= 0x04,
493 _DRM_DMA_USE_PCI_RO
= 0x08
499 * AGP memory entry. Stored as a doubly linked list.
502 unsigned long handle
; /**< handle */
503 struct agp_memory
*memory
;
504 unsigned long bound
; /**< address */
506 struct list_head head
;
512 * \sa drm_agp_init() and drm_device::agp.
514 struct drm_agp_head
{
515 struct agp_kern_info agp_info
; /**< AGP device information */
516 struct list_head memory
;
517 unsigned long mode
; /**< AGP mode */
518 struct agp_bridge_data
*bridge
;
519 int enabled
; /**< whether the AGP bus as been enabled */
520 int acquired
; /**< whether the AGP device has been acquired */
523 int cant_use_aperture
;
524 unsigned long page_mask
;
528 * Scatter-gather memory.
531 unsigned long handle
;
534 struct page
**pagelist
;
540 struct drm_hw_lock
*lock
;
545 * Kernel side of a mapping
547 struct drm_local_map
{
548 resource_size_t offset
; /**< Requested physical address (0 for SAREA)*/
549 unsigned long size
; /**< Requested physical size (bytes) */
550 enum drm_map_type type
; /**< Type of memory to map */
551 enum drm_map_flags flags
; /**< Flags */
552 void *handle
; /**< User-space: "Handle" to pass to mmap() */
553 /**< Kernel-space: kernel-virtual address */
554 int mtrr
; /**< MTRR slot used */
557 typedef struct drm_local_map drm_local_map_t
;
562 struct drm_map_list
{
563 struct list_head head
; /**< list head */
564 struct drm_hash_item hash
;
565 struct drm_local_map
*map
; /**< mapping */
567 struct drm_master
*master
;
571 * Context handle list
573 struct drm_ctx_list
{
574 struct list_head head
; /**< list head */
575 drm_context_t handle
; /**< context handle */
576 struct drm_file
*tag
; /**< associated fd private data */
579 /* location of GART table */
580 #define DRM_ATI_GART_MAIN 1
581 #define DRM_ATI_GART_FB 2
583 #define DRM_ATI_GART_PCI 1
584 #define DRM_ATI_GART_PCIE 2
585 #define DRM_ATI_GART_IGP 3
587 struct drm_ati_pcigart_info
{
588 int gart_table_location
;
592 dma_addr_t table_mask
;
593 struct drm_dma_handle
*table_handle
;
594 struct drm_local_map mapping
;
599 * This structure defines the drm_mm memory object, which will be used by the
600 * DRM for its buffer objects.
602 struct drm_gem_object
{
603 /** Reference count of this object */
604 struct kref refcount
;
607 * handle_count - gem file_priv handle count of this object
609 * Each handle also holds a reference. Note that when the handle_count
610 * drops to 0 any global names (e.g. the id in the flink namespace) will
613 * Protected by dev->object_name_lock.
615 unsigned handle_count
;
617 /** Related drm device */
618 struct drm_device
*dev
;
620 /** File representing the shmem storage */
623 /* Mapping info for this object */
624 struct drm_vma_offset_node vma_node
;
627 * Size of the object, in bytes. Immutable over the object's
633 * Global name for this object, starts at 1. 0 means unnamed.
634 * Access is covered by the object_name_lock in the related drm_device
639 * Memory domains. These monitor which caches contain read/write data
640 * related to the object. When transitioning from one set of domains
641 * to another, the driver is called to ensure that caches are suitably
642 * flushed and invalidated
644 uint32_t read_domains
;
645 uint32_t write_domain
;
648 * While validating an exec operation, the
649 * new read/write domain values are computed here.
650 * They will be transferred to the above values
651 * at the point that any cache flushing occurs
653 uint32_t pending_read_domains
;
654 uint32_t pending_write_domain
;
657 * dma_buf - dma buf associated with this GEM object
659 * Pointer to the dma-buf associated with this gem object (either
660 * through importing or exporting). We break the resulting reference
661 * loop when the last gem handle for this object is released.
663 * Protected by obj->object_name_lock
665 struct dma_buf
*dma_buf
;
668 * import_attach - dma buf attachment backing this object
670 * Any foreign dma_buf imported as a gem object has this set to the
671 * attachment point for the device. This is invariant over the lifetime
674 * The driver's ->gem_free_object callback is responsible for cleaning
675 * up the dma_buf attachment and references acquired at import time.
677 * Note that the drm gem/prime core does not depend upon drivers setting
678 * this field any more. So for drivers where this doesn't make sense
679 * (e.g. virtual devices or a displaylink behind an usb bus) they can
680 * simply leave it as NULL.
682 struct dma_buf_attachment
*import_attach
;
685 #include <drm/drm_crtc.h>
687 /* per-master structure */
690 struct kref refcount
; /* refcount for this master */
692 struct list_head head
; /**< each minor contains a list of masters */
693 struct drm_minor
*minor
; /**< link back to minor we are a master for */
695 char *unique
; /**< Unique identifier: e.g., busid */
696 int unique_len
; /**< Length of unique field */
697 int unique_size
; /**< amount allocated */
699 int blocked
; /**< Blocked due to VC switch? */
701 /** \name Authentication */
703 struct drm_open_hash magiclist
;
704 struct list_head magicfree
;
707 struct drm_lock_data lock
; /**< Information on hardware lock */
709 void *driver_priv
; /**< Private structure for driver to use */
712 /* Size of ringbuffer for vblank timestamps. Just double-buffer
713 * in initial implementation.
715 #define DRM_VBLANKTIME_RBSIZE 2
717 /* Flags and return codes for get_vblank_timestamp() driver function. */
718 #define DRM_CALLED_FROM_VBLIRQ 1
719 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
720 #define DRM_VBLANKTIME_INVBL (1 << 1)
722 /* get_scanout_position() return flags */
723 #define DRM_SCANOUTPOS_VALID (1 << 0)
724 #define DRM_SCANOUTPOS_INVBL (1 << 1)
725 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
729 int (*get_irq
)(struct drm_device
*dev
);
730 const char *(*get_name
)(struct drm_device
*dev
);
731 int (*set_busid
)(struct drm_device
*dev
, struct drm_master
*master
);
732 int (*set_unique
)(struct drm_device
*dev
, struct drm_master
*master
,
733 struct drm_unique
*unique
);
734 int (*irq_by_busid
)(struct drm_device
*dev
, struct drm_irq_busid
*p
);
738 * DRM driver structure. This structure represent the common code for
739 * a family of cards. There will one drm_device for each card present
743 int (*load
) (struct drm_device
*, unsigned long flags
);
744 int (*firstopen
) (struct drm_device
*);
745 int (*open
) (struct drm_device
*, struct drm_file
*);
746 void (*preclose
) (struct drm_device
*, struct drm_file
*file_priv
);
747 void (*postclose
) (struct drm_device
*, struct drm_file
*);
748 void (*lastclose
) (struct drm_device
*);
749 int (*unload
) (struct drm_device
*);
750 int (*suspend
) (struct drm_device
*, pm_message_t state
);
751 int (*resume
) (struct drm_device
*);
752 int (*dma_ioctl
) (struct drm_device
*dev
, void *data
, struct drm_file
*file_priv
);
753 int (*dma_quiescent
) (struct drm_device
*);
754 int (*context_dtor
) (struct drm_device
*dev
, int context
);
757 * get_vblank_counter - get raw hardware vblank counter
759 * @crtc: counter to fetch
761 * Driver callback for fetching a raw hardware vblank counter for @crtc.
762 * If a device doesn't have a hardware counter, the driver can simply
763 * return the value of drm_vblank_count. The DRM core will account for
764 * missed vblank events while interrupts where disabled based on system
767 * Wraparound handling and loss of events due to modesetting is dealt
768 * with in the DRM core code.
771 * Raw vblank counter value.
773 u32 (*get_vblank_counter
) (struct drm_device
*dev
, int crtc
);
776 * enable_vblank - enable vblank interrupt events
778 * @crtc: which irq to enable
780 * Enable vblank interrupts for @crtc. If the device doesn't have
781 * a hardware vblank counter, this routine should be a no-op, since
782 * interrupts will have to stay on to keep the count accurate.
785 * Zero on success, appropriate errno if the given @crtc's vblank
786 * interrupt cannot be enabled.
788 int (*enable_vblank
) (struct drm_device
*dev
, int crtc
);
791 * disable_vblank - disable vblank interrupt events
793 * @crtc: which irq to enable
795 * Disable vblank interrupts for @crtc. If the device doesn't have
796 * a hardware vblank counter, this routine should be a no-op, since
797 * interrupts will have to stay on to keep the count accurate.
799 void (*disable_vblank
) (struct drm_device
*dev
, int crtc
);
802 * Called by \c drm_device_is_agp. Typically used to determine if a
803 * card is really attached to AGP or not.
805 * \param dev DRM device handle
808 * One of three values is returned depending on whether or not the
809 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
810 * (return of 1), or may or may not be AGP (return of 2).
812 int (*device_is_agp
) (struct drm_device
*dev
);
815 * Called by vblank timestamping code.
817 * Return the current display scanout position from a crtc, and an
818 * optional accurate ktime_get timestamp of when position was measured.
820 * \param dev DRM device.
821 * \param crtc Id of the crtc to query.
822 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
823 * \param *vpos Target location for current vertical scanout position.
824 * \param *hpos Target location for current horizontal scanout position.
825 * \param *stime Target location for timestamp taken immediately before
826 * scanout position query. Can be NULL to skip timestamp.
827 * \param *etime Target location for timestamp taken immediately after
828 * scanout position query. Can be NULL to skip timestamp.
830 * Returns vpos as a positive number while in active scanout area.
831 * Returns vpos as a negative number inside vblank, counting the number
832 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
833 * until start of active scanout / end of vblank."
835 * \return Flags, or'ed together as follows:
837 * DRM_SCANOUTPOS_VALID = Query successful.
838 * DRM_SCANOUTPOS_INVBL = Inside vblank.
839 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
840 * this flag means that returned position may be offset by a constant
841 * but unknown small number of scanlines wrt. real scanout position.
844 int (*get_scanout_position
) (struct drm_device
*dev
, int crtc
,
846 int *vpos
, int *hpos
, ktime_t
*stime
,
850 * Called by \c drm_get_last_vbltimestamp. Should return a precise
851 * timestamp when the most recent VBLANK interval ended or will end.
853 * Specifically, the timestamp in @vblank_time should correspond as
854 * closely as possible to the time when the first video scanline of
855 * the video frame after the end of VBLANK will start scanning out,
856 * the time immediately after end of the VBLANK interval. If the
857 * @crtc is currently inside VBLANK, this will be a time in the future.
858 * If the @crtc is currently scanning out a frame, this will be the
859 * past start time of the current scanout. This is meant to adhere
860 * to the OpenML OML_sync_control extension specification.
862 * \param dev dev DRM device handle.
863 * \param crtc crtc for which timestamp should be returned.
864 * \param *max_error Maximum allowable timestamp error in nanoseconds.
865 * Implementation should strive to provide timestamp
866 * with an error of at most *max_error nanoseconds.
867 * Returns true upper bound on error for timestamp.
868 * \param *vblank_time Target location for returned vblank timestamp.
869 * \param flags 0 = Defaults, no special treatment needed.
870 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
871 * irq handler. Some drivers need to apply some workarounds
872 * for gpu-specific vblank irq quirks if flag is set.
875 * Zero if timestamping isn't supported in current display mode or a
876 * negative number on failure. A positive status code on success,
877 * which describes how the vblank_time timestamp was computed.
879 int (*get_vblank_timestamp
) (struct drm_device
*dev
, int crtc
,
881 struct timeval
*vblank_time
,
884 /* these have to be filled in */
886 irqreturn_t(*irq_handler
) (int irq
, void *arg
);
887 void (*irq_preinstall
) (struct drm_device
*dev
);
888 int (*irq_postinstall
) (struct drm_device
*dev
);
889 void (*irq_uninstall
) (struct drm_device
*dev
);
891 /* Master routines */
892 int (*master_create
)(struct drm_device
*dev
, struct drm_master
*master
);
893 void (*master_destroy
)(struct drm_device
*dev
, struct drm_master
*master
);
895 * master_set is called whenever the minor master is set.
896 * master_drop is called whenever the minor master is dropped.
899 int (*master_set
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
901 void (*master_drop
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
904 int (*debugfs_init
)(struct drm_minor
*minor
);
905 void (*debugfs_cleanup
)(struct drm_minor
*minor
);
908 * Driver-specific constructor for drm_gem_objects, to set up
909 * obj->driver_private.
911 * Returns 0 on success.
913 void (*gem_free_object
) (struct drm_gem_object
*obj
);
914 int (*gem_open_object
) (struct drm_gem_object
*, struct drm_file
*);
915 void (*gem_close_object
) (struct drm_gem_object
*, struct drm_file
*);
918 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
919 int (*prime_handle_to_fd
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
920 uint32_t handle
, uint32_t flags
, int *prime_fd
);
921 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
922 int (*prime_fd_to_handle
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
923 int prime_fd
, uint32_t *handle
);
924 /* export GEM -> dmabuf */
925 struct dma_buf
* (*gem_prime_export
)(struct drm_device
*dev
,
926 struct drm_gem_object
*obj
, int flags
);
927 /* import dmabuf -> GEM */
928 struct drm_gem_object
* (*gem_prime_import
)(struct drm_device
*dev
,
929 struct dma_buf
*dma_buf
);
930 /* low-level interface used by drm_gem_prime_{import,export} */
931 int (*gem_prime_pin
)(struct drm_gem_object
*obj
);
932 void (*gem_prime_unpin
)(struct drm_gem_object
*obj
);
933 struct sg_table
*(*gem_prime_get_sg_table
)(struct drm_gem_object
*obj
);
934 struct drm_gem_object
*(*gem_prime_import_sg_table
)(
935 struct drm_device
*dev
, size_t size
,
936 struct sg_table
*sgt
);
937 void *(*gem_prime_vmap
)(struct drm_gem_object
*obj
);
938 void (*gem_prime_vunmap
)(struct drm_gem_object
*obj
, void *vaddr
);
939 int (*gem_prime_mmap
)(struct drm_gem_object
*obj
,
940 struct vm_area_struct
*vma
);
942 /* vga arb irq handler */
943 void (*vgaarb_irq
)(struct drm_device
*dev
, bool state
);
945 /* dumb alloc support */
946 int (*dumb_create
)(struct drm_file
*file_priv
,
947 struct drm_device
*dev
,
948 struct drm_mode_create_dumb
*args
);
949 int (*dumb_map_offset
)(struct drm_file
*file_priv
,
950 struct drm_device
*dev
, uint32_t handle
,
952 int (*dumb_destroy
)(struct drm_file
*file_priv
,
953 struct drm_device
*dev
,
956 /* Driver private ops for this object */
957 const struct vm_operations_struct
*gem_vm_ops
;
968 const struct drm_ioctl_desc
*ioctls
;
970 const struct file_operations
*fops
;
972 struct pci_driver
*pci
;
973 struct platform_device
*platform_device
;
974 struct usb_driver
*usb
;
978 /* List of devices hanging off this driver with stealth attach. */
979 struct list_head legacy_dev_list
;
982 enum drm_minor_type
{
990 * Info file list entry. This structure represents a debugfs or proc file to
991 * be created by the drm core
993 struct drm_info_list
{
994 const char *name
; /** file name */
995 int (*show
)(struct seq_file
*, void*); /** show callback */
996 u32 driver_features
; /**< Required driver features for this entry */
1001 * debugfs node structure. This structure represents a debugfs file.
1003 struct drm_info_node
{
1004 struct list_head list
;
1005 struct drm_minor
*minor
;
1006 const struct drm_info_list
*info_ent
;
1007 struct dentry
*dent
;
1011 * DRM minor structure. This structure represents a drm minor number.
1014 int index
; /**< Minor device number */
1015 int type
; /**< Control or render */
1016 struct device
*kdev
; /**< Linux device */
1017 struct drm_device
*dev
;
1019 struct dentry
*debugfs_root
;
1021 struct list_head debugfs_list
;
1022 struct mutex debugfs_lock
; /* Protects debugfs_list. */
1024 struct drm_master
*master
; /* currently active master for this node */
1025 struct list_head master_list
;
1026 struct drm_mode_group mode_group
;
1030 struct drm_pending_vblank_event
{
1031 struct drm_pending_event base
;
1033 struct drm_event_vblank event
;
1036 struct drm_vblank_crtc
{
1037 wait_queue_head_t queue
; /**< VBLANK wait queue */
1038 struct timeval time
[DRM_VBLANKTIME_RBSIZE
]; /**< timestamp of current count */
1039 atomic_t count
; /**< number of VBLANK interrupts */
1040 atomic_t refcount
; /* number of users of vblank interruptsper crtc */
1041 u32 last
; /* protected by dev->vbl_lock, used */
1042 /* for wraparound handling */
1043 u32 last_wait
; /* Last vblank seqno waited per CRTC */
1044 unsigned int inmodeset
; /* Display driver is setting mode */
1045 bool enabled
; /* so we don't call enable more than
1050 * DRM device structure. This structure represent a complete card that
1051 * may contain multiple heads.
1054 struct list_head legacy_dev_list
;/**< list of devices per driver for stealth attach cleanup */
1055 char *devname
; /**< For /proc/interrupts */
1056 int if_version
; /**< Highest interface version set */
1058 /** \name Lifetime Management */
1060 struct kref ref
; /**< Object ref-count */
1061 struct device
*dev
; /**< Device structure of bus-device */
1062 struct drm_driver
*driver
; /**< DRM driver managing the device */
1063 void *dev_private
; /**< DRM driver private data */
1064 struct drm_minor
*control
; /**< Control node */
1065 struct drm_minor
*primary
; /**< Primary node */
1066 struct drm_minor
*render
; /**< Render node */
1067 atomic_t unplugged
; /**< Flag whether dev is dead */
1068 struct inode
*anon_inode
; /**< inode for private address-space */
1073 spinlock_t count_lock
; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1074 struct mutex struct_mutex
; /**< For others */
1077 /** \name Usage Counters */
1079 int open_count
; /**< Outstanding files open */
1080 int buf_use
; /**< Buffers in use -- cannot alloc */
1081 atomic_t buf_alloc
; /**< Buffer allocation in progress */
1084 struct list_head filelist
;
1086 /** \name Memory management */
1088 struct list_head maplist
; /**< Linked list of regions */
1089 struct drm_open_hash map_hash
; /**< User token hash table for maps */
1091 /** \name Context handle management */
1093 struct list_head ctxlist
; /**< Linked list of context handles */
1094 struct mutex ctxlist_mutex
; /**< For ctxlist */
1098 struct list_head vmalist
; /**< List of vmas (for debugging) */
1102 /** \name DMA support */
1104 struct drm_device_dma
*dma
; /**< Optional pointer for DMA support */
1107 /** \name Context support */
1109 bool irq_enabled
; /**< True if irq handler is enabled */
1110 __volatile__
long context_flag
; /**< Context swapping flag */
1111 int last_context
; /**< Last current context */
1114 /** \name VBLANK IRQ support */
1118 * At load time, disabling the vblank interrupt won't be allowed since
1119 * old clients may not call the modeset ioctl and therefore misbehave.
1120 * Once the modeset ioctl *has* been called though, we can safely
1121 * disable them when unused.
1123 bool vblank_disable_allowed
;
1125 /* array of size num_crtcs */
1126 struct drm_vblank_crtc
*vblank
;
1128 spinlock_t vblank_time_lock
; /**< Protects vblank count and time updates during vblank enable/disable */
1129 spinlock_t vbl_lock
;
1130 struct timer_list vblank_disable_timer
;
1132 u32 max_vblank_count
; /**< size of vblank counter register */
1137 struct list_head vblank_event_list
;
1138 spinlock_t event_lock
;
1142 struct drm_agp_head
*agp
; /**< AGP data */
1144 struct pci_dev
*pdev
; /**< PCI device structure */
1146 struct pci_controller
*hose
;
1149 struct platform_device
*platformdev
; /**< Platform device struture */
1150 struct usb_device
*usbdev
;
1152 struct drm_sg_mem
*sg
; /**< Scatter gather memory */
1153 unsigned int num_crtcs
; /**< Number of CRTCs on this device */
1154 struct drm_sigdata sigdata
; /**< For block_all_signals */
1157 struct drm_local_map
*agp_buffer_map
;
1158 unsigned int agp_buffer_token
;
1160 struct drm_mode_config mode_config
; /**< Current mode config */
1162 /** \name GEM information */
1164 struct mutex object_name_lock
;
1165 struct idr object_name_idr
;
1166 struct drm_vma_offset_manager
*vma_offset_manager
;
1168 int switch_power_state
;
1171 #define DRM_SWITCH_POWER_ON 0
1172 #define DRM_SWITCH_POWER_OFF 1
1173 #define DRM_SWITCH_POWER_CHANGING 2
1174 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3
1176 static __inline__
int drm_core_check_feature(struct drm_device
*dev
,
1179 return ((dev
->driver
->driver_features
& feature
) ? 1 : 0);
1182 static inline int drm_dev_to_irq(struct drm_device
*dev
)
1184 return dev
->driver
->bus
->get_irq(dev
);
1187 static inline void drm_device_set_unplugged(struct drm_device
*dev
)
1190 atomic_set(&dev
->unplugged
, 1);
1193 static inline int drm_device_is_unplugged(struct drm_device
*dev
)
1195 int ret
= atomic_read(&dev
->unplugged
);
1200 static inline bool drm_modeset_is_locked(struct drm_device
*dev
)
1202 return mutex_is_locked(&dev
->mode_config
.mutex
);
1205 static inline bool drm_is_render_client(struct drm_file
*file_priv
)
1207 return file_priv
->minor
->type
== DRM_MINOR_RENDER
;
1210 static inline bool drm_is_control_client(const struct drm_file
*file_priv
)
1212 return file_priv
->minor
->type
== DRM_MINOR_CONTROL
;
1215 /******************************************************************/
1216 /** \name Internal function definitions */
1219 /* Driver support (drm_drv.h) */
1220 extern long drm_ioctl(struct file
*filp
,
1221 unsigned int cmd
, unsigned long arg
);
1222 extern long drm_compat_ioctl(struct file
*filp
,
1223 unsigned int cmd
, unsigned long arg
);
1224 extern int drm_lastclose(struct drm_device
*dev
);
1226 /* Device support (drm_fops.h) */
1227 extern struct mutex drm_global_mutex
;
1228 extern int drm_open(struct inode
*inode
, struct file
*filp
);
1229 extern int drm_stub_open(struct inode
*inode
, struct file
*filp
);
1230 extern ssize_t
drm_read(struct file
*filp
, char __user
*buffer
,
1231 size_t count
, loff_t
*offset
);
1232 extern int drm_release(struct inode
*inode
, struct file
*filp
);
1234 /* Mapping support (drm_vm.h) */
1235 extern int drm_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1236 extern int drm_mmap_locked(struct file
*filp
, struct vm_area_struct
*vma
);
1237 extern void drm_vm_open_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1238 extern void drm_vm_close_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1239 extern unsigned int drm_poll(struct file
*filp
, struct poll_table_struct
*wait
);
1241 /* Memory management support (drm_memory.h) */
1242 #include <drm/drm_memory.h>
1245 /* Misc. IOCTL support (drm_ioctl.h) */
1246 extern int drm_irq_by_busid(struct drm_device
*dev
, void *data
,
1247 struct drm_file
*file_priv
);
1248 extern int drm_getunique(struct drm_device
*dev
, void *data
,
1249 struct drm_file
*file_priv
);
1250 extern int drm_setunique(struct drm_device
*dev
, void *data
,
1251 struct drm_file
*file_priv
);
1252 extern int drm_getmap(struct drm_device
*dev
, void *data
,
1253 struct drm_file
*file_priv
);
1254 extern int drm_getclient(struct drm_device
*dev
, void *data
,
1255 struct drm_file
*file_priv
);
1256 extern int drm_getstats(struct drm_device
*dev
, void *data
,
1257 struct drm_file
*file_priv
);
1258 extern int drm_getcap(struct drm_device
*dev
, void *data
,
1259 struct drm_file
*file_priv
);
1260 extern int drm_setclientcap(struct drm_device
*dev
, void *data
,
1261 struct drm_file
*file_priv
);
1262 extern int drm_setversion(struct drm_device
*dev
, void *data
,
1263 struct drm_file
*file_priv
);
1264 extern int drm_noop(struct drm_device
*dev
, void *data
,
1265 struct drm_file
*file_priv
);
1267 /* Context IOCTL support (drm_context.h) */
1268 extern int drm_resctx(struct drm_device
*dev
, void *data
,
1269 struct drm_file
*file_priv
);
1270 extern int drm_addctx(struct drm_device
*dev
, void *data
,
1271 struct drm_file
*file_priv
);
1272 extern int drm_getctx(struct drm_device
*dev
, void *data
,
1273 struct drm_file
*file_priv
);
1274 extern int drm_switchctx(struct drm_device
*dev
, void *data
,
1275 struct drm_file
*file_priv
);
1276 extern int drm_newctx(struct drm_device
*dev
, void *data
,
1277 struct drm_file
*file_priv
);
1278 extern int drm_rmctx(struct drm_device
*dev
, void *data
,
1279 struct drm_file
*file_priv
);
1281 extern int drm_ctxbitmap_init(struct drm_device
*dev
);
1282 extern void drm_ctxbitmap_cleanup(struct drm_device
*dev
);
1283 extern void drm_ctxbitmap_free(struct drm_device
*dev
, int ctx_handle
);
1285 extern int drm_setsareactx(struct drm_device
*dev
, void *data
,
1286 struct drm_file
*file_priv
);
1287 extern int drm_getsareactx(struct drm_device
*dev
, void *data
,
1288 struct drm_file
*file_priv
);
1290 /* Authentication IOCTL support (drm_auth.h) */
1291 extern int drm_getmagic(struct drm_device
*dev
, void *data
,
1292 struct drm_file
*file_priv
);
1293 extern int drm_authmagic(struct drm_device
*dev
, void *data
,
1294 struct drm_file
*file_priv
);
1295 extern int drm_remove_magic(struct drm_master
*master
, drm_magic_t magic
);
1297 /* Cache management (drm_cache.c) */
1298 void drm_clflush_pages(struct page
*pages
[], unsigned long num_pages
);
1299 void drm_clflush_sg(struct sg_table
*st
);
1300 void drm_clflush_virt_range(char *addr
, unsigned long length
);
1302 /* Locking IOCTL support (drm_lock.h) */
1303 extern int drm_lock(struct drm_device
*dev
, void *data
,
1304 struct drm_file
*file_priv
);
1305 extern int drm_unlock(struct drm_device
*dev
, void *data
,
1306 struct drm_file
*file_priv
);
1307 extern int drm_lock_free(struct drm_lock_data
*lock_data
, unsigned int context
);
1308 extern void drm_idlelock_take(struct drm_lock_data
*lock_data
);
1309 extern void drm_idlelock_release(struct drm_lock_data
*lock_data
);
1312 * These are exported to drivers so that they can implement fencing using
1313 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1316 extern int drm_i_have_hw_lock(struct drm_device
*dev
, struct drm_file
*file_priv
);
1318 /* Buffer management support (drm_bufs.h) */
1319 extern int drm_addbufs_agp(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1320 extern int drm_addbufs_pci(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1321 extern int drm_addmap(struct drm_device
*dev
, resource_size_t offset
,
1322 unsigned int size
, enum drm_map_type type
,
1323 enum drm_map_flags flags
, struct drm_local_map
**map_ptr
);
1324 extern int drm_addmap_ioctl(struct drm_device
*dev
, void *data
,
1325 struct drm_file
*file_priv
);
1326 extern int drm_rmmap(struct drm_device
*dev
, struct drm_local_map
*map
);
1327 extern int drm_rmmap_locked(struct drm_device
*dev
, struct drm_local_map
*map
);
1328 extern int drm_rmmap_ioctl(struct drm_device
*dev
, void *data
,
1329 struct drm_file
*file_priv
);
1330 extern int drm_addbufs(struct drm_device
*dev
, void *data
,
1331 struct drm_file
*file_priv
);
1332 extern int drm_infobufs(struct drm_device
*dev
, void *data
,
1333 struct drm_file
*file_priv
);
1334 extern int drm_markbufs(struct drm_device
*dev
, void *data
,
1335 struct drm_file
*file_priv
);
1336 extern int drm_freebufs(struct drm_device
*dev
, void *data
,
1337 struct drm_file
*file_priv
);
1338 extern int drm_mapbufs(struct drm_device
*dev
, void *data
,
1339 struct drm_file
*file_priv
);
1340 extern int drm_dma_ioctl(struct drm_device
*dev
, void *data
,
1341 struct drm_file
*file_priv
);
1343 /* DMA support (drm_dma.h) */
1344 extern int drm_legacy_dma_setup(struct drm_device
*dev
);
1345 extern void drm_legacy_dma_takedown(struct drm_device
*dev
);
1346 extern void drm_free_buffer(struct drm_device
*dev
, struct drm_buf
* buf
);
1347 extern void drm_core_reclaim_buffers(struct drm_device
*dev
,
1348 struct drm_file
*filp
);
1350 /* IRQ support (drm_irq.h) */
1351 extern int drm_control(struct drm_device
*dev
, void *data
,
1352 struct drm_file
*file_priv
);
1353 extern int drm_irq_install(struct drm_device
*dev
);
1354 extern int drm_irq_uninstall(struct drm_device
*dev
);
1356 extern int drm_vblank_init(struct drm_device
*dev
, int num_crtcs
);
1357 extern int drm_wait_vblank(struct drm_device
*dev
, void *data
,
1358 struct drm_file
*filp
);
1359 extern u32
drm_vblank_count(struct drm_device
*dev
, int crtc
);
1360 extern u32
drm_vblank_count_and_time(struct drm_device
*dev
, int crtc
,
1361 struct timeval
*vblanktime
);
1362 extern void drm_send_vblank_event(struct drm_device
*dev
, int crtc
,
1363 struct drm_pending_vblank_event
*e
);
1364 extern bool drm_handle_vblank(struct drm_device
*dev
, int crtc
);
1365 extern int drm_vblank_get(struct drm_device
*dev
, int crtc
);
1366 extern void drm_vblank_put(struct drm_device
*dev
, int crtc
);
1367 extern void drm_vblank_off(struct drm_device
*dev
, int crtc
);
1368 extern void drm_vblank_cleanup(struct drm_device
*dev
);
1369 extern u32
drm_get_last_vbltimestamp(struct drm_device
*dev
, int crtc
,
1370 struct timeval
*tvblank
, unsigned flags
);
1371 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device
*dev
,
1372 int crtc
, int *max_error
,
1373 struct timeval
*vblank_time
,
1375 const struct drm_crtc
*refcrtc
,
1376 const struct drm_display_mode
*mode
);
1377 extern void drm_calc_timestamping_constants(struct drm_crtc
*crtc
,
1378 const struct drm_display_mode
*mode
);
1381 /* Modesetting support */
1382 extern void drm_vblank_pre_modeset(struct drm_device
*dev
, int crtc
);
1383 extern void drm_vblank_post_modeset(struct drm_device
*dev
, int crtc
);
1384 extern int drm_modeset_ctl(struct drm_device
*dev
, void *data
,
1385 struct drm_file
*file_priv
);
1387 /* AGP/GART support (drm_agpsupport.h) */
1389 #include <drm/drm_agpsupport.h>
1391 /* Stub support (drm_stub.h) */
1392 extern int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
1393 struct drm_file
*file_priv
);
1394 extern int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
1395 struct drm_file
*file_priv
);
1396 struct drm_master
*drm_master_create(struct drm_minor
*minor
);
1397 extern struct drm_master
*drm_master_get(struct drm_master
*master
);
1398 extern void drm_master_put(struct drm_master
**master
);
1400 extern void drm_put_dev(struct drm_device
*dev
);
1401 extern void drm_unplug_dev(struct drm_device
*dev
);
1402 extern unsigned int drm_debug
;
1403 extern unsigned int drm_rnodes
;
1405 extern unsigned int drm_vblank_offdelay
;
1406 extern unsigned int drm_timestamp_precision
;
1407 extern unsigned int drm_timestamp_monotonic
;
1409 extern struct class *drm_class
;
1410 extern struct dentry
*drm_debugfs_root
;
1412 extern struct idr drm_minors_idr
;
1414 extern struct drm_local_map
*drm_getsarea(struct drm_device
*dev
);
1416 /* Debugfs support */
1417 #if defined(CONFIG_DEBUG_FS)
1418 extern int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1419 struct dentry
*root
);
1420 extern int drm_debugfs_create_files(const struct drm_info_list
*files
,
1421 int count
, struct dentry
*root
,
1422 struct drm_minor
*minor
);
1423 extern int drm_debugfs_remove_files(const struct drm_info_list
*files
,
1424 int count
, struct drm_minor
*minor
);
1425 extern int drm_debugfs_cleanup(struct drm_minor
*minor
);
1427 static inline int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1428 struct dentry
*root
)
1433 static inline int drm_debugfs_create_files(const struct drm_info_list
*files
,
1434 int count
, struct dentry
*root
,
1435 struct drm_minor
*minor
)
1440 static inline int drm_debugfs_remove_files(const struct drm_info_list
*files
,
1441 int count
, struct drm_minor
*minor
)
1446 static inline int drm_debugfs_cleanup(struct drm_minor
*minor
)
1452 /* Info file support */
1453 extern int drm_name_info(struct seq_file
*m
, void *data
);
1454 extern int drm_vm_info(struct seq_file
*m
, void *data
);
1455 extern int drm_bufs_info(struct seq_file
*m
, void *data
);
1456 extern int drm_vblank_info(struct seq_file
*m
, void *data
);
1457 extern int drm_clients_info(struct seq_file
*m
, void* data
);
1458 extern int drm_gem_name_info(struct seq_file
*m
, void *data
);
1461 extern struct dma_buf
*drm_gem_prime_export(struct drm_device
*dev
,
1462 struct drm_gem_object
*obj
, int flags
);
1463 extern int drm_gem_prime_handle_to_fd(struct drm_device
*dev
,
1464 struct drm_file
*file_priv
, uint32_t handle
, uint32_t flags
,
1466 extern struct drm_gem_object
*drm_gem_prime_import(struct drm_device
*dev
,
1467 struct dma_buf
*dma_buf
);
1468 extern int drm_gem_prime_fd_to_handle(struct drm_device
*dev
,
1469 struct drm_file
*file_priv
, int prime_fd
, uint32_t *handle
);
1470 extern void drm_gem_dmabuf_release(struct dma_buf
*dma_buf
);
1472 extern int drm_prime_handle_to_fd_ioctl(struct drm_device
*dev
, void *data
,
1473 struct drm_file
*file_priv
);
1474 extern int drm_prime_fd_to_handle_ioctl(struct drm_device
*dev
, void *data
,
1475 struct drm_file
*file_priv
);
1477 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table
*sgt
, struct page
**pages
,
1478 dma_addr_t
*addrs
, int max_pages
);
1479 extern struct sg_table
*drm_prime_pages_to_sg(struct page
**pages
, int nr_pages
);
1480 extern void drm_prime_gem_destroy(struct drm_gem_object
*obj
, struct sg_table
*sg
);
1482 int drm_gem_dumb_destroy(struct drm_file
*file
,
1483 struct drm_device
*dev
,
1486 void drm_prime_init_file_private(struct drm_prime_file_private
*prime_fpriv
);
1487 void drm_prime_destroy_file_private(struct drm_prime_file_private
*prime_fpriv
);
1488 void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
);
1491 extern int drm_vma_info(struct seq_file
*m
, void *data
);
1494 /* Scatter Gather Support (drm_scatter.h) */
1495 extern void drm_legacy_sg_cleanup(struct drm_device
*dev
);
1496 extern int drm_sg_alloc(struct drm_device
*dev
, void *data
,
1497 struct drm_file
*file_priv
);
1498 extern int drm_sg_free(struct drm_device
*dev
, void *data
,
1499 struct drm_file
*file_priv
);
1501 /* ATI PCIGART support (ati_pcigart.h) */
1502 extern int drm_ati_pcigart_init(struct drm_device
*dev
,
1503 struct drm_ati_pcigart_info
* gart_info
);
1504 extern int drm_ati_pcigart_cleanup(struct drm_device
*dev
,
1505 struct drm_ati_pcigart_info
* gart_info
);
1507 extern drm_dma_handle_t
*drm_pci_alloc(struct drm_device
*dev
, size_t size
,
1509 extern void __drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1510 extern void drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1512 /* sysfs support (drm_sysfs.c) */
1513 struct drm_sysfs_class
;
1514 extern struct class *drm_sysfs_create(struct module
*owner
, char *name
);
1515 extern void drm_sysfs_destroy(void);
1516 extern int drm_sysfs_device_add(struct drm_minor
*minor
);
1517 extern void drm_sysfs_hotplug_event(struct drm_device
*dev
);
1518 extern void drm_sysfs_device_remove(struct drm_minor
*minor
);
1519 extern int drm_sysfs_connector_add(struct drm_connector
*connector
);
1520 extern void drm_sysfs_connector_remove(struct drm_connector
*connector
);
1522 /* Graphics Execution Manager library functions (drm_gem.c) */
1523 int drm_gem_init(struct drm_device
*dev
);
1524 void drm_gem_destroy(struct drm_device
*dev
);
1525 void drm_gem_object_release(struct drm_gem_object
*obj
);
1526 void drm_gem_object_free(struct kref
*kref
);
1527 int drm_gem_object_init(struct drm_device
*dev
,
1528 struct drm_gem_object
*obj
, size_t size
);
1529 void drm_gem_private_object_init(struct drm_device
*dev
,
1530 struct drm_gem_object
*obj
, size_t size
);
1531 void drm_gem_vm_open(struct vm_area_struct
*vma
);
1532 void drm_gem_vm_close(struct vm_area_struct
*vma
);
1533 int drm_gem_mmap_obj(struct drm_gem_object
*obj
, unsigned long obj_size
,
1534 struct vm_area_struct
*vma
);
1535 int drm_gem_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1537 #include <drm/drm_global.h>
1540 drm_gem_object_reference(struct drm_gem_object
*obj
)
1542 kref_get(&obj
->refcount
);
1546 drm_gem_object_unreference(struct drm_gem_object
*obj
)
1549 kref_put(&obj
->refcount
, drm_gem_object_free
);
1553 drm_gem_object_unreference_unlocked(struct drm_gem_object
*obj
)
1555 if (obj
&& !atomic_add_unless(&obj
->refcount
.refcount
, -1, 1)) {
1556 struct drm_device
*dev
= obj
->dev
;
1558 mutex_lock(&dev
->struct_mutex
);
1559 if (likely(atomic_dec_and_test(&obj
->refcount
.refcount
)))
1560 drm_gem_object_free(&obj
->refcount
);
1561 mutex_unlock(&dev
->struct_mutex
);
1565 int drm_gem_handle_create_tail(struct drm_file
*file_priv
,
1566 struct drm_gem_object
*obj
,
1568 int drm_gem_handle_create(struct drm_file
*file_priv
,
1569 struct drm_gem_object
*obj
,
1571 int drm_gem_handle_delete(struct drm_file
*filp
, u32 handle
);
1574 void drm_gem_free_mmap_offset(struct drm_gem_object
*obj
);
1575 int drm_gem_create_mmap_offset(struct drm_gem_object
*obj
);
1576 int drm_gem_create_mmap_offset_size(struct drm_gem_object
*obj
, size_t size
);
1578 struct page
**drm_gem_get_pages(struct drm_gem_object
*obj
, gfp_t gfpmask
);
1579 void drm_gem_put_pages(struct drm_gem_object
*obj
, struct page
**pages
,
1580 bool dirty
, bool accessed
);
1582 struct drm_gem_object
*drm_gem_object_lookup(struct drm_device
*dev
,
1583 struct drm_file
*filp
,
1585 int drm_gem_close_ioctl(struct drm_device
*dev
, void *data
,
1586 struct drm_file
*file_priv
);
1587 int drm_gem_flink_ioctl(struct drm_device
*dev
, void *data
,
1588 struct drm_file
*file_priv
);
1589 int drm_gem_open_ioctl(struct drm_device
*dev
, void *data
,
1590 struct drm_file
*file_priv
);
1591 void drm_gem_open(struct drm_device
*dev
, struct drm_file
*file_private
);
1592 void drm_gem_release(struct drm_device
*dev
, struct drm_file
*file_private
);
1594 extern void drm_core_ioremap(struct drm_local_map
*map
, struct drm_device
*dev
);
1595 extern void drm_core_ioremap_wc(struct drm_local_map
*map
, struct drm_device
*dev
);
1596 extern void drm_core_ioremapfree(struct drm_local_map
*map
, struct drm_device
*dev
);
1598 static __inline__
struct drm_local_map
*drm_core_findmap(struct drm_device
*dev
,
1601 struct drm_map_list
*_entry
;
1602 list_for_each_entry(_entry
, &dev
->maplist
, head
)
1603 if (_entry
->user_token
== token
)
1608 static __inline__
void drm_core_dropmap(struct drm_local_map
*map
)
1612 #include <drm/drm_mem_util.h>
1614 struct drm_device
*drm_dev_alloc(struct drm_driver
*driver
,
1615 struct device
*parent
);
1616 void drm_dev_ref(struct drm_device
*dev
);
1617 void drm_dev_unref(struct drm_device
*dev
);
1618 int drm_dev_register(struct drm_device
*dev
, unsigned long flags
);
1619 void drm_dev_unregister(struct drm_device
*dev
);
1621 struct drm_minor
*drm_minor_acquire(unsigned int minor_id
);
1622 void drm_minor_release(struct drm_minor
*minor
);
1627 static __inline__
int drm_pci_device_is_agp(struct drm_device
*dev
)
1629 if (dev
->driver
->device_is_agp
!= NULL
) {
1630 int err
= (*dev
->driver
->device_is_agp
) (dev
);
1637 return pci_find_capability(dev
->pdev
, PCI_CAP_ID_AGP
);
1639 void drm_pci_agp_destroy(struct drm_device
*dev
);
1641 extern int drm_pci_init(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1642 extern void drm_pci_exit(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1643 extern int drm_get_pci_dev(struct pci_dev
*pdev
,
1644 const struct pci_device_id
*ent
,
1645 struct drm_driver
*driver
);
1647 #define DRM_PCIE_SPEED_25 1
1648 #define DRM_PCIE_SPEED_50 2
1649 #define DRM_PCIE_SPEED_80 4
1651 extern int drm_pcie_get_speed_cap_mask(struct drm_device
*dev
, u32
*speed_mask
);
1653 /* platform section */
1654 extern int drm_platform_init(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1656 /* returns true if currently okay to sleep */
1657 static __inline__
bool drm_can_sleep(void)
1659 if (in_atomic() || in_dbg_master() || irqs_disabled())
1664 #endif /* __KERNEL__ */