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 /***********************************************************************/
147 /** \name Begin the DRM... */
150 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
151 also include looping detection. */
153 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
155 #define DRM_MAP_HASH_OFFSET 0x10000000
159 /***********************************************************************/
160 /** \name Macros to make printk easier */
166 * \param fmt printf() like format string.
167 * \param arg arguments
169 #define DRM_ERROR(fmt, ...) \
170 drm_err(__func__, fmt, ##__VA_ARGS__)
173 * Rate limited error output. Like DRM_ERROR() but won't flood the log.
175 * \param fmt printf() like format string.
176 * \param arg arguments
178 #define DRM_ERROR_RATELIMITED(fmt, ...) \
180 static DEFINE_RATELIMIT_STATE(_rs, \
181 DEFAULT_RATELIMIT_INTERVAL, \
182 DEFAULT_RATELIMIT_BURST); \
184 if (__ratelimit(&_rs)) \
185 drm_err(__func__, fmt, ##__VA_ARGS__); \
188 #define DRM_INFO(fmt, ...) \
189 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
191 #define DRM_INFO_ONCE(fmt, ...) \
192 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
197 * \param fmt printf() like format string.
198 * \param arg arguments
201 #define DRM_DEBUG(fmt, args...) \
203 if (unlikely(drm_debug & DRM_UT_CORE)) \
204 drm_ut_debug_printk(__func__, fmt, ##args); \
207 #define DRM_DEBUG_DRIVER(fmt, args...) \
209 if (unlikely(drm_debug & DRM_UT_DRIVER)) \
210 drm_ut_debug_printk(__func__, fmt, ##args); \
212 #define DRM_DEBUG_KMS(fmt, args...) \
214 if (unlikely(drm_debug & DRM_UT_KMS)) \
215 drm_ut_debug_printk(__func__, fmt, ##args); \
217 #define DRM_DEBUG_PRIME(fmt, args...) \
219 if (unlikely(drm_debug & DRM_UT_PRIME)) \
220 drm_ut_debug_printk(__func__, fmt, ##args); \
223 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
224 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
225 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
226 #define DRM_DEBUG(fmt, arg...) do { } while (0)
231 /***********************************************************************/
232 /** \name Internal types and structures */
235 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
238 * Test that the hardware lock is held by the caller, returning otherwise.
240 * \param dev DRM device.
241 * \param filp file pointer of the caller.
243 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
245 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
246 _file_priv->master->lock.file_priv != _file_priv) { \
247 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
248 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
249 _file_priv->master->lock.file_priv, _file_priv); \
255 * Ioctl function type.
257 * \param inode device inode.
258 * \param file_priv DRM file private pointer.
259 * \param cmd command.
260 * \param arg argument.
262 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
263 struct drm_file *file_priv);
265 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
268 #define DRM_IOCTL_NR(n) _IOC_NR(n)
269 #define DRM_MAJOR 226
272 #define DRM_MASTER 0x2
273 #define DRM_ROOT_ONLY 0x4
274 #define DRM_CONTROL_ALLOW 0x8
275 #define DRM_UNLOCKED 0x10
276 #define DRM_RENDER_ALLOW 0x20
278 struct drm_ioctl_desc {
282 unsigned int cmd_drv;
287 * Creates a driver or general drm_ioctl_desc array entry for the given
288 * ioctl, for use by drm_ioctl().
291 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
292 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
294 struct drm_magic_entry {
295 struct list_head head;
296 struct drm_hash_item hash_item;
297 struct drm_file *priv;
300 struct drm_vma_entry {
301 struct list_head head;
302 struct vm_area_struct *vma;
310 int idx; /**< Index into master buflist */
311 int total; /**< Buffer size */
312 int order; /**< log-base-2(total) */
313 int used; /**< Amount of buffer in use (for DMA) */
314 unsigned long offset; /**< Byte offset (used internally) */
315 void *address; /**< Address of buffer */
316 unsigned long bus_address; /**< Bus address of buffer */
317 struct drm_buf *next; /**< Kernel-only: used for free list */
318 __volatile__ int waiting; /**< On kernel DMA queue */
319 __volatile__ int pending; /**< On hardware DMA queue */
320 struct drm_file *file_priv; /**< Private of holding file descr */
321 int context; /**< Kernel queue for this buffer */
322 int while_locked; /**< Dispatch this buffer while locked */
330 } list; /**< Which list we're on */
332 int dev_priv_size; /**< Size of buffer private storage */
333 void *dev_private; /**< Per-buffer private storage */
336 /** bufs is one longer than it has to be */
337 struct drm_waitlist {
338 int count; /**< Number of possible buffers */
339 struct drm_buf **bufs; /**< List of pointers to buffers */
340 struct drm_buf **rp; /**< Read pointer */
341 struct drm_buf **wp; /**< Write pointer */
342 struct drm_buf **end; /**< End pointer */
343 spinlock_t read_lock;
344 spinlock_t write_lock;
347 typedef struct drm_dma_handle {
354 * Buffer entry. There is one of this for each buffer size order.
356 struct drm_buf_entry {
357 int buf_size; /**< size */
358 int buf_count; /**< number of buffers */
359 struct drm_buf *buflist; /**< buffer list */
362 struct drm_dma_handle **seglist;
364 int low_mark; /**< Low water mark */
365 int high_mark; /**< High water mark */
368 /* Event queued up for userspace to read */
369 struct drm_pending_event {
370 struct drm_event *event;
371 struct list_head link;
372 struct drm_file *file_priv;
373 pid_t pid; /* pid of requester, no guarantee it's valid by the time
374 we deliver the event, for tracing only */
375 void (*destroy)(struct drm_pending_event *event);
378 /* initial implementaton using a linked list - todo hashtab */
379 struct drm_prime_file_private {
380 struct list_head head;
384 /** File private data */
386 unsigned authenticated :1;
387 /* true when the client has asked us to expose stereo 3D mode flags */
388 unsigned stereo_allowed :1;
390 * true if client understands CRTC primary planes and cursor planes
393 unsigned universal_planes:1;
398 struct list_head lhead;
399 struct drm_minor *minor;
400 unsigned long lock_count;
402 /** Mapping of mm object handles to object pointers. */
403 struct idr object_idr;
404 /** Lock for synchronization of access to object_idr. */
405 spinlock_t table_lock;
410 struct drm_master *master; /* master this node is currently associated with
411 N.B. not always minor->master */
413 * fbs - List of framebuffers associated with this file.
415 * Protected by fbs_lock. Note that the fbs list holds a reference on
416 * the fb object to prevent it from untimely disappearing.
418 struct list_head fbs;
419 struct mutex fbs_lock;
421 wait_queue_head_t event_wait;
422 struct list_head event_list;
425 struct drm_prime_file_private prime;
431 struct drm_lock_data {
432 struct drm_hw_lock *hw_lock; /**< Hardware lock */
433 /** Private of lock holder's file (NULL=kernel) */
434 struct drm_file *file_priv;
435 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
436 unsigned long lock_time; /**< Time of last lock in jiffies */
438 uint32_t kernel_waiters;
439 uint32_t user_waiters;
446 struct drm_device_dma {
448 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
449 int buf_count; /**< total number of buffers */
450 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
452 int page_count; /**< number of pages */
453 unsigned long *pagelist; /**< page list */
454 unsigned long byte_count;
456 _DRM_DMA_USE_AGP = 0x01,
457 _DRM_DMA_USE_SG = 0x02,
458 _DRM_DMA_USE_FB = 0x04,
459 _DRM_DMA_USE_PCI_RO = 0x08
465 * AGP memory entry. Stored as a doubly linked list.
468 unsigned long handle; /**< handle */
469 struct agp_memory *memory;
470 unsigned long bound; /**< address */
472 struct list_head head;
478 * \sa drm_agp_init() and drm_device::agp.
480 struct drm_agp_head {
481 struct agp_kern_info agp_info; /**< AGP device information */
482 struct list_head memory;
483 unsigned long mode; /**< AGP mode */
484 struct agp_bridge_data *bridge;
485 int enabled; /**< whether the AGP bus as been enabled */
486 int acquired; /**< whether the AGP device has been acquired */
489 int cant_use_aperture;
490 unsigned long page_mask;
494 * Scatter-gather memory.
497 unsigned long handle;
500 struct page **pagelist;
506 struct drm_hw_lock *lock;
511 * Kernel side of a mapping
513 struct drm_local_map {
514 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
515 unsigned long size; /**< Requested physical size (bytes) */
516 enum drm_map_type type; /**< Type of memory to map */
517 enum drm_map_flags flags; /**< Flags */
518 void *handle; /**< User-space: "Handle" to pass to mmap() */
519 /**< Kernel-space: kernel-virtual address */
520 int mtrr; /**< MTRR slot used */
523 typedef struct drm_local_map drm_local_map_t;
528 struct drm_map_list {
529 struct list_head head; /**< list head */
530 struct drm_hash_item hash;
531 struct drm_local_map *map; /**< mapping */
533 struct drm_master *master;
536 /* location of GART table */
537 #define DRM_ATI_GART_MAIN 1
538 #define DRM_ATI_GART_FB 2
540 #define DRM_ATI_GART_PCI 1
541 #define DRM_ATI_GART_PCIE 2
542 #define DRM_ATI_GART_IGP 3
544 struct drm_ati_pcigart_info {
545 int gart_table_location;
549 dma_addr_t table_mask;
550 struct drm_dma_handle *table_handle;
551 struct drm_local_map mapping;
556 * This structure defines the drm_mm memory object, which will be used by the
557 * DRM for its buffer objects.
559 struct drm_gem_object {
560 /** Reference count of this object */
561 struct kref refcount;
564 * handle_count - gem file_priv handle count of this object
566 * Each handle also holds a reference. Note that when the handle_count
567 * drops to 0 any global names (e.g. the id in the flink namespace) will
570 * Protected by dev->object_name_lock.
572 unsigned handle_count;
574 /** Related drm device */
575 struct drm_device *dev;
577 /** File representing the shmem storage */
580 /* Mapping info for this object */
581 struct drm_vma_offset_node vma_node;
584 * Size of the object, in bytes. Immutable over the object's
590 * Global name for this object, starts at 1. 0 means unnamed.
591 * Access is covered by the object_name_lock in the related drm_device
596 * Memory domains. These monitor which caches contain read/write data
597 * related to the object. When transitioning from one set of domains
598 * to another, the driver is called to ensure that caches are suitably
599 * flushed and invalidated
601 uint32_t read_domains;
602 uint32_t write_domain;
605 * While validating an exec operation, the
606 * new read/write domain values are computed here.
607 * They will be transferred to the above values
608 * at the point that any cache flushing occurs
610 uint32_t pending_read_domains;
611 uint32_t pending_write_domain;
614 * dma_buf - dma buf associated with this GEM object
616 * Pointer to the dma-buf associated with this gem object (either
617 * through importing or exporting). We break the resulting reference
618 * loop when the last gem handle for this object is released.
620 * Protected by obj->object_name_lock
622 struct dma_buf *dma_buf;
625 * import_attach - dma buf attachment backing this object
627 * Any foreign dma_buf imported as a gem object has this set to the
628 * attachment point for the device. This is invariant over the lifetime
631 * The driver's ->gem_free_object callback is responsible for cleaning
632 * up the dma_buf attachment and references acquired at import time.
634 * Note that the drm gem/prime core does not depend upon drivers setting
635 * this field any more. So for drivers where this doesn't make sense
636 * (e.g. virtual devices or a displaylink behind an usb bus) they can
637 * simply leave it as NULL.
639 struct dma_buf_attachment *import_attach;
642 #include <drm/drm_crtc.h>
645 * struct drm_master - drm master structure
647 * @refcount: Refcount for this master object.
648 * @minor: Link back to minor char device we are master for. Immutable.
649 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
650 * @unique_len: Length of unique field. Protected by drm_global_mutex.
651 * @unique_size: Amount allocated. Protected by drm_global_mutex.
652 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex.
653 * @magicfree: List of used authentication tokens. Protected by struct_mutex.
654 * @lock: DRI lock information.
655 * @driver_priv: Pointer to driver-private information.
658 struct kref refcount;
659 struct drm_minor *minor;
663 struct drm_open_hash magiclist;
664 struct list_head magicfree;
665 struct drm_lock_data lock;
669 /* Size of ringbuffer for vblank timestamps. Just double-buffer
670 * in initial implementation.
672 #define DRM_VBLANKTIME_RBSIZE 2
674 /* Flags and return codes for get_vblank_timestamp() driver function. */
675 #define DRM_CALLED_FROM_VBLIRQ 1
676 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
677 #define DRM_VBLANKTIME_INVBL (1 << 1)
679 /* get_scanout_position() return flags */
680 #define DRM_SCANOUTPOS_VALID (1 << 0)
681 #define DRM_SCANOUTPOS_INVBL (1 << 1)
682 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
685 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
689 * DRM driver structure. This structure represent the common code for
690 * a family of cards. There will one drm_device for each card present
694 int (*load) (struct drm_device *, unsigned long flags);
695 int (*firstopen) (struct drm_device *);
696 int (*open) (struct drm_device *, struct drm_file *);
697 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
698 void (*postclose) (struct drm_device *, struct drm_file *);
699 void (*lastclose) (struct drm_device *);
700 int (*unload) (struct drm_device *);
701 int (*suspend) (struct drm_device *, pm_message_t state);
702 int (*resume) (struct drm_device *);
703 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
704 int (*dma_quiescent) (struct drm_device *);
705 int (*context_dtor) (struct drm_device *dev, int context);
708 * get_vblank_counter - get raw hardware vblank counter
710 * @crtc: counter to fetch
712 * Driver callback for fetching a raw hardware vblank counter for @crtc.
713 * If a device doesn't have a hardware counter, the driver can simply
714 * return the value of drm_vblank_count. The DRM core will account for
715 * missed vblank events while interrupts where disabled based on system
718 * Wraparound handling and loss of events due to modesetting is dealt
719 * with in the DRM core code.
722 * Raw vblank counter value.
724 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
727 * enable_vblank - enable vblank interrupt events
729 * @crtc: which irq to enable
731 * Enable vblank interrupts for @crtc. If the device doesn't have
732 * a hardware vblank counter, this routine should be a no-op, since
733 * interrupts will have to stay on to keep the count accurate.
736 * Zero on success, appropriate errno if the given @crtc's vblank
737 * interrupt cannot be enabled.
739 int (*enable_vblank) (struct drm_device *dev, int crtc);
742 * disable_vblank - disable vblank interrupt events
744 * @crtc: which irq to enable
746 * Disable vblank interrupts for @crtc. If the device doesn't have
747 * a hardware vblank counter, this routine should be a no-op, since
748 * interrupts will have to stay on to keep the count accurate.
750 void (*disable_vblank) (struct drm_device *dev, int crtc);
753 * Called by \c drm_device_is_agp. Typically used to determine if a
754 * card is really attached to AGP or not.
756 * \param dev DRM device handle
759 * One of three values is returned depending on whether or not the
760 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
761 * (return of 1), or may or may not be AGP (return of 2).
763 int (*device_is_agp) (struct drm_device *dev);
766 * Called by vblank timestamping code.
768 * Return the current display scanout position from a crtc, and an
769 * optional accurate ktime_get timestamp of when position was measured.
771 * \param dev DRM device.
772 * \param crtc Id of the crtc to query.
773 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
774 * \param *vpos Target location for current vertical scanout position.
775 * \param *hpos Target location for current horizontal scanout position.
776 * \param *stime Target location for timestamp taken immediately before
777 * scanout position query. Can be NULL to skip timestamp.
778 * \param *etime Target location for timestamp taken immediately after
779 * scanout position query. Can be NULL to skip timestamp.
781 * Returns vpos as a positive number while in active scanout area.
782 * Returns vpos as a negative number inside vblank, counting the number
783 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
784 * until start of active scanout / end of vblank."
786 * \return Flags, or'ed together as follows:
788 * DRM_SCANOUTPOS_VALID = Query successful.
789 * DRM_SCANOUTPOS_INVBL = Inside vblank.
790 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
791 * this flag means that returned position may be offset by a constant
792 * but unknown small number of scanlines wrt. real scanout position.
795 int (*get_scanout_position) (struct drm_device *dev, int crtc,
797 int *vpos, int *hpos, ktime_t *stime,
801 * Called by \c drm_get_last_vbltimestamp. Should return a precise
802 * timestamp when the most recent VBLANK interval ended or will end.
804 * Specifically, the timestamp in @vblank_time should correspond as
805 * closely as possible to the time when the first video scanline of
806 * the video frame after the end of VBLANK will start scanning out,
807 * the time immediately after end of the VBLANK interval. If the
808 * @crtc is currently inside VBLANK, this will be a time in the future.
809 * If the @crtc is currently scanning out a frame, this will be the
810 * past start time of the current scanout. This is meant to adhere
811 * to the OpenML OML_sync_control extension specification.
813 * \param dev dev DRM device handle.
814 * \param crtc crtc for which timestamp should be returned.
815 * \param *max_error Maximum allowable timestamp error in nanoseconds.
816 * Implementation should strive to provide timestamp
817 * with an error of at most *max_error nanoseconds.
818 * Returns true upper bound on error for timestamp.
819 * \param *vblank_time Target location for returned vblank timestamp.
820 * \param flags 0 = Defaults, no special treatment needed.
821 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
822 * irq handler. Some drivers need to apply some workarounds
823 * for gpu-specific vblank irq quirks if flag is set.
826 * Zero if timestamping isn't supported in current display mode or a
827 * negative number on failure. A positive status code on success,
828 * which describes how the vblank_time timestamp was computed.
830 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
832 struct timeval *vblank_time,
835 /* these have to be filled in */
837 irqreturn_t(*irq_handler) (int irq, void *arg);
838 void (*irq_preinstall) (struct drm_device *dev);
839 int (*irq_postinstall) (struct drm_device *dev);
840 void (*irq_uninstall) (struct drm_device *dev);
842 /* Master routines */
843 int (*master_create)(struct drm_device *dev, struct drm_master *master);
844 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
846 * master_set is called whenever the minor master is set.
847 * master_drop is called whenever the minor master is dropped.
850 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
852 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
855 int (*debugfs_init)(struct drm_minor *minor);
856 void (*debugfs_cleanup)(struct drm_minor *minor);
859 * Driver-specific constructor for drm_gem_objects, to set up
860 * obj->driver_private.
862 * Returns 0 on success.
864 void (*gem_free_object) (struct drm_gem_object *obj);
865 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
866 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
869 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
870 int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
871 uint32_t handle, uint32_t flags, int *prime_fd);
872 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
873 int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
874 int prime_fd, uint32_t *handle);
875 /* export GEM -> dmabuf */
876 struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
877 struct drm_gem_object *obj, int flags);
878 /* import dmabuf -> GEM */
879 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
880 struct dma_buf *dma_buf);
881 /* low-level interface used by drm_gem_prime_{import,export} */
882 int (*gem_prime_pin)(struct drm_gem_object *obj);
883 void (*gem_prime_unpin)(struct drm_gem_object *obj);
884 struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj);
885 struct drm_gem_object *(*gem_prime_import_sg_table)(
886 struct drm_device *dev, size_t size,
887 struct sg_table *sgt);
888 void *(*gem_prime_vmap)(struct drm_gem_object *obj);
889 void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr);
890 int (*gem_prime_mmap)(struct drm_gem_object *obj,
891 struct vm_area_struct *vma);
893 /* vga arb irq handler */
894 void (*vgaarb_irq)(struct drm_device *dev, bool state);
896 /* dumb alloc support */
897 int (*dumb_create)(struct drm_file *file_priv,
898 struct drm_device *dev,
899 struct drm_mode_create_dumb *args);
900 int (*dumb_map_offset)(struct drm_file *file_priv,
901 struct drm_device *dev, uint32_t handle,
903 int (*dumb_destroy)(struct drm_file *file_priv,
904 struct drm_device *dev,
907 /* Driver private ops for this object */
908 const struct vm_operations_struct *gem_vm_ops;
919 const struct drm_ioctl_desc *ioctls;
921 const struct file_operations *fops;
924 /* List of devices hanging off this driver with stealth attach. */
925 struct list_head legacy_dev_list;
928 enum drm_minor_type {
936 * Info file list entry. This structure represents a debugfs or proc file to
937 * be created by the drm core
939 struct drm_info_list {
940 const char *name; /** file name */
941 int (*show)(struct seq_file*, void*); /** show callback */
942 u32 driver_features; /**< Required driver features for this entry */
947 * debugfs node structure. This structure represents a debugfs file.
949 struct drm_info_node {
950 struct list_head list;
951 struct drm_minor *minor;
952 const struct drm_info_list *info_ent;
957 * DRM minor structure. This structure represents a drm minor number.
960 int index; /**< Minor device number */
961 int type; /**< Control or render */
962 struct device *kdev; /**< Linux device */
963 struct drm_device *dev;
965 struct dentry *debugfs_root;
967 struct list_head debugfs_list;
968 struct mutex debugfs_lock; /* Protects debugfs_list. */
970 /* currently active master for this node. Protected by master_mutex */
971 struct drm_master *master;
972 struct drm_mode_group mode_group;
976 struct drm_pending_vblank_event {
977 struct drm_pending_event base;
979 struct drm_event_vblank event;
982 struct drm_vblank_crtc {
983 struct drm_device *dev; /* pointer to the drm_device */
984 wait_queue_head_t queue; /**< VBLANK wait queue */
985 struct timeval time[DRM_VBLANKTIME_RBSIZE]; /**< timestamp of current count */
986 struct timer_list disable_timer; /* delayed disable timer */
987 atomic_t count; /**< number of VBLANK interrupts */
988 atomic_t refcount; /* number of users of vblank interruptsper crtc */
989 u32 last; /* protected by dev->vbl_lock, used */
990 /* for wraparound handling */
991 u32 last_wait; /* Last vblank seqno waited per CRTC */
992 unsigned int inmodeset; /* Display driver is setting mode */
993 int crtc; /* crtc index */
994 bool enabled; /* so we don't call enable more than
999 * DRM device structure. This structure represent a complete card that
1000 * may contain multiple heads.
1003 struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */
1004 int if_version; /**< Highest interface version set */
1006 /** \name Lifetime Management */
1008 struct kref ref; /**< Object ref-count */
1009 struct device *dev; /**< Device structure of bus-device */
1010 struct drm_driver *driver; /**< DRM driver managing the device */
1011 void *dev_private; /**< DRM driver private data */
1012 struct drm_minor *control; /**< Control node */
1013 struct drm_minor *primary; /**< Primary node */
1014 struct drm_minor *render; /**< Render node */
1015 atomic_t unplugged; /**< Flag whether dev is dead */
1016 struct inode *anon_inode; /**< inode for private address-space */
1017 char *unique; /**< unique name of the device */
1022 struct mutex struct_mutex; /**< For others */
1023 struct mutex master_mutex; /**< For drm_minor::master */
1026 /** \name Usage Counters */
1028 int open_count; /**< Outstanding files open, protected by drm_global_mutex. */
1029 spinlock_t buf_lock; /**< For drm_device::buf_use and a few other things. */
1030 int buf_use; /**< Buffers in use -- cannot alloc */
1031 atomic_t buf_alloc; /**< Buffer allocation in progress */
1034 struct list_head filelist;
1036 /** \name Memory management */
1038 struct list_head maplist; /**< Linked list of regions */
1039 struct drm_open_hash map_hash; /**< User token hash table for maps */
1041 /** \name Context handle management */
1043 struct list_head ctxlist; /**< Linked list of context handles */
1044 struct mutex ctxlist_mutex; /**< For ctxlist */
1048 struct list_head vmalist; /**< List of vmas (for debugging) */
1052 /** \name DMA support */
1054 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1057 /** \name Context support */
1059 bool irq_enabled; /**< True if irq handler is enabled */
1062 __volatile__ long context_flag; /**< Context swapping flag */
1063 int last_context; /**< Last current context */
1066 /** \name VBLANK IRQ support */
1070 * At load time, disabling the vblank interrupt won't be allowed since
1071 * old clients may not call the modeset ioctl and therefore misbehave.
1072 * Once the modeset ioctl *has* been called though, we can safely
1073 * disable them when unused.
1075 bool vblank_disable_allowed;
1078 * If true, vblank interrupt will be disabled immediately when the
1079 * refcount drops to zero, as opposed to via the vblank disable
1081 * This can be set to true it the hardware has a working vblank
1082 * counter and the driver uses drm_vblank_on() and drm_vblank_off()
1085 bool vblank_disable_immediate;
1087 /* array of size num_crtcs */
1088 struct drm_vblank_crtc *vblank;
1090 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1091 spinlock_t vbl_lock;
1093 u32 max_vblank_count; /**< size of vblank counter register */
1098 struct list_head vblank_event_list;
1099 spinlock_t event_lock;
1103 struct drm_agp_head *agp; /**< AGP data */
1105 struct pci_dev *pdev; /**< PCI device structure */
1107 struct pci_controller *hose;
1110 struct platform_device *platformdev; /**< Platform device struture */
1111 struct usb_device *usbdev;
1113 struct drm_sg_mem *sg; /**< Scatter gather memory */
1114 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1115 struct drm_sigdata sigdata; /**< For block_all_signals */
1118 struct drm_local_map *agp_buffer_map;
1119 unsigned int agp_buffer_token;
1121 struct drm_mode_config mode_config; /**< Current mode config */
1123 /** \name GEM information */
1125 struct mutex object_name_lock;
1126 struct idr object_name_idr;
1127 struct drm_vma_offset_manager *vma_offset_manager;
1129 int switch_power_state;
1132 #define DRM_SWITCH_POWER_ON 0
1133 #define DRM_SWITCH_POWER_OFF 1
1134 #define DRM_SWITCH_POWER_CHANGING 2
1135 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3
1137 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1140 return ((dev->driver->driver_features & feature) ? 1 : 0);
1143 static inline void drm_device_set_unplugged(struct drm_device *dev)
1146 atomic_set(&dev->unplugged, 1);
1149 static inline int drm_device_is_unplugged(struct drm_device *dev)
1151 int ret = atomic_read(&dev->unplugged);
1156 static inline bool drm_is_render_client(const struct drm_file *file_priv)
1158 return file_priv->minor->type == DRM_MINOR_RENDER;
1161 static inline bool drm_is_control_client(const struct drm_file *file_priv)
1163 return file_priv->minor->type == DRM_MINOR_CONTROL;
1166 static inline bool drm_is_primary_client(const struct drm_file *file_priv)
1168 return file_priv->minor->type == DRM_MINOR_LEGACY;
1172 * drm_is_master() - Check whether a DRM open-file is DRM-Master
1173 * @file: DRM open-file context
1175 * This checks whether a DRM open-file context is owner of the master context
1176 * attached to it. If a file owns a master context, it's called DRM-Master.
1177 * Per DRM device, only one such file can be DRM-Master at a time.
1179 * Returns: True if the file is DRM-Master, otherwise false.
1181 static inline bool drm_is_master(const struct drm_file *file)
1183 return file->master && file->master == file->minor->master;
1186 /******************************************************************/
1187 /** \name Internal function definitions */
1190 /* Driver support (drm_drv.h) */
1191 extern long drm_ioctl(struct file *filp,
1192 unsigned int cmd, unsigned long arg);
1193 extern long drm_compat_ioctl(struct file *filp,
1194 unsigned int cmd, unsigned long arg);
1195 extern int drm_lastclose(struct drm_device *dev);
1196 extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
1198 /* Device support (drm_fops.h) */
1199 extern struct mutex drm_global_mutex;
1200 extern int drm_open(struct inode *inode, struct file *filp);
1201 extern ssize_t drm_read(struct file *filp, char __user *buffer,
1202 size_t count, loff_t *offset);
1203 extern int drm_release(struct inode *inode, struct file *filp);
1205 /* Mapping support (drm_vm.h) */
1206 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1207 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1208 extern void drm_vm_open_locked(struct drm_device *dev, struct vm_area_struct *vma);
1209 extern void drm_vm_close_locked(struct drm_device *dev, struct vm_area_struct *vma);
1210 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1212 /* Memory management support (drm_memory.h) */
1213 #include <drm/drm_memory.h>
1216 /* Misc. IOCTL support (drm_ioctl.h) */
1217 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1218 struct drm_file *file_priv);
1219 extern int drm_getunique(struct drm_device *dev, void *data,
1220 struct drm_file *file_priv);
1221 extern int drm_setunique(struct drm_device *dev, void *data,
1222 struct drm_file *file_priv);
1223 extern int drm_getmap(struct drm_device *dev, void *data,
1224 struct drm_file *file_priv);
1225 extern int drm_getclient(struct drm_device *dev, void *data,
1226 struct drm_file *file_priv);
1227 extern int drm_getstats(struct drm_device *dev, void *data,
1228 struct drm_file *file_priv);
1229 extern int drm_getcap(struct drm_device *dev, void *data,
1230 struct drm_file *file_priv);
1231 extern int drm_setclientcap(struct drm_device *dev, void *data,
1232 struct drm_file *file_priv);
1233 extern int drm_setversion(struct drm_device *dev, void *data,
1234 struct drm_file *file_priv);
1235 extern int drm_noop(struct drm_device *dev, void *data,
1236 struct drm_file *file_priv);
1238 /* Authentication IOCTL support (drm_auth.h) */
1239 extern int drm_getmagic(struct drm_device *dev, void *data,
1240 struct drm_file *file_priv);
1241 extern int drm_authmagic(struct drm_device *dev, void *data,
1242 struct drm_file *file_priv);
1243 extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic);
1245 /* Cache management (drm_cache.c) */
1246 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1247 void drm_clflush_sg(struct sg_table *st);
1248 void drm_clflush_virt_range(void *addr, unsigned long length);
1250 /* Locking IOCTL support (drm_lock.h) */
1251 extern int drm_lock(struct drm_device *dev, void *data,
1252 struct drm_file *file_priv);
1253 extern int drm_unlock(struct drm_device *dev, void *data,
1254 struct drm_file *file_priv);
1255 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1256 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1257 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1260 * These are exported to drivers so that they can implement fencing using
1261 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1264 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1266 /* Buffer management support (drm_bufs.h) */
1267 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1268 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1269 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1270 unsigned int size, enum drm_map_type type,
1271 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1272 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1273 struct drm_file *file_priv);
1274 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1275 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1276 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1277 struct drm_file *file_priv);
1278 extern int drm_addbufs(struct drm_device *dev, void *data,
1279 struct drm_file *file_priv);
1280 extern int drm_infobufs(struct drm_device *dev, void *data,
1281 struct drm_file *file_priv);
1282 extern int drm_markbufs(struct drm_device *dev, void *data,
1283 struct drm_file *file_priv);
1284 extern int drm_freebufs(struct drm_device *dev, void *data,
1285 struct drm_file *file_priv);
1286 extern int drm_mapbufs(struct drm_device *dev, void *data,
1287 struct drm_file *file_priv);
1288 extern int drm_dma_ioctl(struct drm_device *dev, void *data,
1289 struct drm_file *file_priv);
1291 /* DMA support (drm_dma.h) */
1292 extern int drm_legacy_dma_setup(struct drm_device *dev);
1293 extern void drm_legacy_dma_takedown(struct drm_device *dev);
1294 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1295 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1296 struct drm_file *filp);
1298 /* IRQ support (drm_irq.h) */
1299 extern int drm_control(struct drm_device *dev, void *data,
1300 struct drm_file *file_priv);
1301 extern int drm_irq_install(struct drm_device *dev, int irq);
1302 extern int drm_irq_uninstall(struct drm_device *dev);
1304 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1305 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1306 struct drm_file *filp);
1307 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1308 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1309 struct timeval *vblanktime);
1310 extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
1311 struct drm_pending_vblank_event *e);
1312 extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1313 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1314 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1315 extern int drm_crtc_vblank_get(struct drm_crtc *crtc);
1316 extern void drm_crtc_vblank_put(struct drm_crtc *crtc);
1317 extern void drm_vblank_off(struct drm_device *dev, int crtc);
1318 extern void drm_vblank_on(struct drm_device *dev, int crtc);
1319 extern void drm_crtc_vblank_off(struct drm_crtc *crtc);
1320 extern void drm_crtc_vblank_on(struct drm_crtc *crtc);
1321 extern void drm_vblank_cleanup(struct drm_device *dev);
1323 extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1324 struct timeval *tvblank, unsigned flags);
1325 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1326 int crtc, int *max_error,
1327 struct timeval *vblank_time,
1329 const struct drm_crtc *refcrtc,
1330 const struct drm_display_mode *mode);
1331 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc,
1332 const struct drm_display_mode *mode);
1335 /* Modesetting support */
1336 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1337 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1338 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1339 struct drm_file *file_priv);
1341 /* AGP/GART support (drm_agpsupport.h) */
1343 #include <drm/drm_agpsupport.h>
1345 /* Stub support (drm_stub.h) */
1346 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1347 struct drm_file *file_priv);
1348 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1349 struct drm_file *file_priv);
1350 struct drm_master *drm_master_create(struct drm_minor *minor);
1351 extern struct drm_master *drm_master_get(struct drm_master *master);
1352 extern void drm_master_put(struct drm_master **master);
1354 extern void drm_put_dev(struct drm_device *dev);
1355 extern void drm_unplug_dev(struct drm_device *dev);
1356 extern unsigned int drm_debug;
1358 extern int drm_vblank_offdelay;
1359 extern unsigned int drm_timestamp_precision;
1360 extern unsigned int drm_timestamp_monotonic;
1362 extern struct class *drm_class;
1364 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1366 /* Debugfs support */
1367 #if defined(CONFIG_DEBUG_FS)
1368 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1369 struct dentry *root);
1370 extern int drm_debugfs_create_files(const struct drm_info_list *files,
1371 int count, struct dentry *root,
1372 struct drm_minor *minor);
1373 extern int drm_debugfs_remove_files(const struct drm_info_list *files,
1374 int count, struct drm_minor *minor);
1375 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1376 extern int drm_debugfs_connector_add(struct drm_connector *connector);
1377 extern void drm_debugfs_connector_remove(struct drm_connector *connector);
1379 static inline int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1380 struct dentry *root)
1385 static inline int drm_debugfs_create_files(const struct drm_info_list *files,
1386 int count, struct dentry *root,
1387 struct drm_minor *minor)
1392 static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
1393 int count, struct drm_minor *minor)
1398 static inline int drm_debugfs_cleanup(struct drm_minor *minor)
1403 static inline int drm_debugfs_connector_add(struct drm_connector *connector)
1407 static inline void drm_debugfs_connector_remove(struct drm_connector *connector)
1413 /* Info file support */
1414 extern int drm_name_info(struct seq_file *m, void *data);
1415 extern int drm_vm_info(struct seq_file *m, void *data);
1416 extern int drm_bufs_info(struct seq_file *m, void *data);
1417 extern int drm_vblank_info(struct seq_file *m, void *data);
1418 extern int drm_clients_info(struct seq_file *m, void* data);
1419 extern int drm_gem_name_info(struct seq_file *m, void *data);
1422 extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
1423 struct drm_gem_object *obj, int flags);
1424 extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
1425 struct drm_file *file_priv, uint32_t handle, uint32_t flags,
1427 extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
1428 struct dma_buf *dma_buf);
1429 extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
1430 struct drm_file *file_priv, int prime_fd, uint32_t *handle);
1431 extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
1433 extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
1434 struct drm_file *file_priv);
1435 extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data,
1436 struct drm_file *file_priv);
1438 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
1439 dma_addr_t *addrs, int max_pages);
1440 extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages);
1441 extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
1443 int drm_gem_dumb_destroy(struct drm_file *file,
1444 struct drm_device *dev,
1447 void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv);
1448 void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv);
1449 void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf);
1452 extern int drm_vma_info(struct seq_file *m, void *data);
1455 /* Scatter Gather Support (drm_scatter.h) */
1456 extern void drm_legacy_sg_cleanup(struct drm_device *dev);
1457 extern int drm_sg_alloc(struct drm_device *dev, void *data,
1458 struct drm_file *file_priv);
1459 extern int drm_sg_free(struct drm_device *dev, void *data,
1460 struct drm_file *file_priv);
1462 /* ATI PCIGART support (ati_pcigart.h) */
1463 extern int drm_ati_pcigart_init(struct drm_device *dev,
1464 struct drm_ati_pcigart_info * gart_info);
1465 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1466 struct drm_ati_pcigart_info * gart_info);
1468 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1470 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1471 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1472 extern int drm_pci_set_unique(struct drm_device *dev,
1473 struct drm_master *master,
1474 struct drm_unique *u);
1476 /* sysfs support (drm_sysfs.c) */
1477 struct drm_sysfs_class;
1478 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1479 extern void drm_sysfs_destroy(void);
1480 extern struct device *drm_sysfs_minor_alloc(struct drm_minor *minor);
1481 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1482 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1483 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1485 /* Graphics Execution Manager library functions (drm_gem.c) */
1486 int drm_gem_init(struct drm_device *dev);
1487 void drm_gem_destroy(struct drm_device *dev);
1488 void drm_gem_object_release(struct drm_gem_object *obj);
1489 void drm_gem_object_free(struct kref *kref);
1490 int drm_gem_object_init(struct drm_device *dev,
1491 struct drm_gem_object *obj, size_t size);
1492 void drm_gem_private_object_init(struct drm_device *dev,
1493 struct drm_gem_object *obj, size_t size);
1494 void drm_gem_vm_open(struct vm_area_struct *vma);
1495 void drm_gem_vm_close(struct vm_area_struct *vma);
1496 int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,
1497 struct vm_area_struct *vma);
1498 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1500 #include <drm/drm_global.h>
1503 drm_gem_object_reference(struct drm_gem_object *obj)
1505 kref_get(&obj->refcount);
1509 drm_gem_object_unreference(struct drm_gem_object *obj)
1512 kref_put(&obj->refcount, drm_gem_object_free);
1516 drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1518 if (obj && !atomic_add_unless(&obj->refcount.refcount, -1, 1)) {
1519 struct drm_device *dev = obj->dev;
1521 mutex_lock(&dev->struct_mutex);
1522 if (likely(atomic_dec_and_test(&obj->refcount.refcount)))
1523 drm_gem_object_free(&obj->refcount);
1524 mutex_unlock(&dev->struct_mutex);
1528 int drm_gem_handle_create_tail(struct drm_file *file_priv,
1529 struct drm_gem_object *obj,
1531 int drm_gem_handle_create(struct drm_file *file_priv,
1532 struct drm_gem_object *obj,
1534 int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
1537 void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
1538 int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
1539 int drm_gem_create_mmap_offset_size(struct drm_gem_object *obj, size_t size);
1541 struct page **drm_gem_get_pages(struct drm_gem_object *obj);
1542 void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages,
1543 bool dirty, bool accessed);
1545 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1546 struct drm_file *filp,
1548 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1549 struct drm_file *file_priv);
1550 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1551 struct drm_file *file_priv);
1552 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1553 struct drm_file *file_priv);
1554 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1555 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1557 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1558 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1559 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1561 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1564 struct drm_map_list *_entry;
1565 list_for_each_entry(_entry, &dev->maplist, head)
1566 if (_entry->user_token == token)
1571 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1575 #include <drm/drm_mem_util.h>
1577 struct drm_device *drm_dev_alloc(struct drm_driver *driver,
1578 struct device *parent);
1579 void drm_dev_ref(struct drm_device *dev);
1580 void drm_dev_unref(struct drm_device *dev);
1581 int drm_dev_register(struct drm_device *dev, unsigned long flags);
1582 void drm_dev_unregister(struct drm_device *dev);
1583 int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...);
1585 struct drm_minor *drm_minor_acquire(unsigned int minor_id);
1586 void drm_minor_release(struct drm_minor *minor);
1591 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1593 if (dev->driver->device_is_agp != NULL) {
1594 int err = (*dev->driver->device_is_agp) (dev);
1601 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1603 void drm_pci_agp_destroy(struct drm_device *dev);
1605 extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1606 extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1607 extern int drm_get_pci_dev(struct pci_dev *pdev,
1608 const struct pci_device_id *ent,
1609 struct drm_driver *driver);
1611 #define DRM_PCIE_SPEED_25 1
1612 #define DRM_PCIE_SPEED_50 2
1613 #define DRM_PCIE_SPEED_80 4
1615 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
1617 /* platform section */
1618 extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1620 /* returns true if currently okay to sleep */
1621 static __inline__ bool drm_can_sleep(void)
1623 if (in_atomic() || in_dbg_master() || irqs_disabled())
1628 #endif /* __KERNEL__ */