3 * Private header for Direct Rendering Manager
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
10 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
11 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
12 * Copyright (c) 2009-2010, Code Aurora Forum.
13 * All rights reserved.
15 * Permission is hereby granted, free of charge, to any person obtaining a
16 * copy of this software and associated documentation files (the "Software"),
17 * to deal in the Software without restriction, including without limitation
18 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
19 * and/or sell copies of the Software, and to permit persons to whom the
20 * Software is furnished to do so, subject to the following conditions:
22 * The above copyright notice and this permission notice (including the next
23 * paragraph) shall be included in all copies or substantial portions of the
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
29 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
30 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
31 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
32 * OTHER DEALINGS IN THE SOFTWARE.
40 /* add include of current.h so that "current" is defined
41 * before static inline funcs in wait.h. Doing this so we
42 * can build the DRM (part of PI DRI). 4/21/2000 S + B */
43 #include <asm/current.h>
44 #endif /* __alpha__ */
45 #include <linux/kernel.h>
46 #include <linux/miscdevice.h>
48 #include <linux/proc_fs.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 #if defined(__alpha__) || defined(__powerpc__)
61 #include <asm/pgtable.h> /* For pte_wrprotect */
64 #include <asm/uaccess.h>
65 #include <linux/types.h>
66 #include <linux/agp_backend.h>
67 #include <linux/workqueue.h>
68 #include <linux/poll.h>
69 #include <asm/pgalloc.h>
71 #include <drm/drm_sarea.h>
72 #include <drm/drm_vma_manager.h>
74 #include <linux/idr.h>
76 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
77 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
87 #include <drm/drm_os_linux.h>
88 #include <drm/drm_hashtab.h>
89 #include <drm/drm_mm.h>
91 #define DRM_UT_CORE 0x01
92 #define DRM_UT_DRIVER 0x02
93 #define DRM_UT_KMS 0x04
94 #define DRM_UT_PRIME 0x08
96 * Three debug levels are defined.
97 * drm_core, drm_driver, drm_kms
98 * drm_core level can be used in the generic drm code. For example:
99 * drm_ioctl, drm_mm, drm_memory
100 * The macro definition of DRM_DEBUG is used.
101 * DRM_DEBUG(fmt, args...)
102 * The debug info by using the DRM_DEBUG can be obtained by adding
103 * the boot option of "drm.debug=1".
105 * drm_driver level can be used in the specific drm driver. It is used
106 * to add the debug info related with the drm driver. For example:
107 * i915_drv, i915_dma, i915_gem, radeon_drv,
108 * The macro definition of DRM_DEBUG_DRIVER can be used.
109 * DRM_DEBUG_DRIVER(fmt, args...)
110 * The debug info by using the DRM_DEBUG_DRIVER can be obtained by
111 * adding the boot option of "drm.debug=0x02"
113 * drm_kms level can be used in the KMS code related with specific drm driver.
114 * It is used to add the debug info related with KMS mode. For example:
115 * the connector/crtc ,
116 * The macro definition of DRM_DEBUG_KMS can be used.
117 * DRM_DEBUG_KMS(fmt, args...)
118 * The debug info by using the DRM_DEBUG_KMS can be obtained by
119 * adding the boot option of "drm.debug=0x04"
121 * If we add the boot option of "drm.debug=0x06", we can get the debug info by
122 * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
123 * If we add the boot option of "drm.debug=0x05", we can get the debug info by
124 * using the DRM_DEBUG_KMS and DRM_DEBUG.
127 extern __printf(4, 5)
128 void drm_ut_debug_printk(unsigned int request_level
,
130 const char *function_name
,
131 const char *format
, ...);
132 extern __printf(2, 3)
133 int drm_err(const char *func
, const char *format
, ...);
135 /***********************************************************************/
136 /** \name DRM template customization defaults */
139 /* driver capabilities and requirements mask */
140 #define DRIVER_USE_AGP 0x1
141 #define DRIVER_REQUIRE_AGP 0x2
142 #define DRIVER_USE_MTRR 0x4
143 #define DRIVER_PCI_DMA 0x8
144 #define DRIVER_SG 0x10
145 #define DRIVER_HAVE_DMA 0x20
146 #define DRIVER_HAVE_IRQ 0x40
147 #define DRIVER_IRQ_SHARED 0x80
148 #define DRIVER_IRQ_VBL 0x100
149 #define DRIVER_DMA_QUEUE 0x200
150 #define DRIVER_IRQ_VBL2 0x800
151 #define DRIVER_GEM 0x1000
152 #define DRIVER_MODESET 0x2000
153 #define DRIVER_PRIME 0x4000
155 #define DRIVER_BUS_PCI 0x1
156 #define DRIVER_BUS_PLATFORM 0x2
157 #define DRIVER_BUS_USB 0x3
159 /***********************************************************************/
160 /** \name Begin the DRM... */
163 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
164 also include looping detection. */
166 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
167 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
168 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
169 #define DRM_LOOPING_LIMIT 5000000
170 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
171 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
173 #define DRM_FLAG_DEBUG 0x01
175 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
176 #define DRM_MAP_HASH_OFFSET 0x10000000
180 /***********************************************************************/
181 /** \name Macros to make printk easier */
187 * \param fmt printf() like format string.
188 * \param arg arguments
190 #define DRM_ERROR(fmt, ...) \
191 drm_err(__func__, fmt, ##__VA_ARGS__)
193 #define DRM_INFO(fmt, ...) \
194 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
199 * \param fmt printf() like format string.
200 * \param arg arguments
203 #define DRM_DEBUG(fmt, args...) \
205 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
206 __func__, fmt, ##args); \
209 #define DRM_DEBUG_DRIVER(fmt, args...) \
211 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
212 __func__, fmt, ##args); \
214 #define DRM_DEBUG_KMS(fmt, args...) \
216 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
217 __func__, fmt, ##args); \
219 #define DRM_DEBUG_PRIME(fmt, args...) \
221 drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME, \
222 __func__, fmt, ##args); \
224 #define DRM_LOG(fmt, args...) \
226 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
227 NULL, fmt, ##args); \
229 #define DRM_LOG_KMS(fmt, args...) \
231 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
232 NULL, fmt, ##args); \
234 #define DRM_LOG_MODE(fmt, args...) \
236 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
237 NULL, fmt, ##args); \
239 #define DRM_LOG_DRIVER(fmt, args...) \
241 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
242 NULL, fmt, ##args); \
245 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
246 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
247 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
248 #define DRM_DEBUG(fmt, arg...) do { } while (0)
249 #define DRM_LOG(fmt, arg...) do { } while (0)
250 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
251 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
252 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
258 /***********************************************************************/
259 /** \name Internal types and structures */
262 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
264 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
265 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
267 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
270 * Test that the hardware lock is held by the caller, returning otherwise.
272 * \param dev DRM device.
273 * \param filp file pointer of the caller.
275 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
277 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
278 _file_priv->master->lock.file_priv != _file_priv) { \
279 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
280 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
281 _file_priv->master->lock.file_priv, _file_priv); \
287 * Ioctl function type.
289 * \param inode device inode.
290 * \param file_priv DRM file private pointer.
291 * \param cmd command.
292 * \param arg argument.
294 typedef int drm_ioctl_t(struct drm_device
*dev
, void *data
,
295 struct drm_file
*file_priv
);
297 typedef int drm_ioctl_compat_t(struct file
*filp
, unsigned int cmd
,
300 #define DRM_IOCTL_NR(n) _IOC_NR(n)
301 #define DRM_MAJOR 226
304 #define DRM_MASTER 0x2
305 #define DRM_ROOT_ONLY 0x4
306 #define DRM_CONTROL_ALLOW 0x8
307 #define DRM_UNLOCKED 0x10
309 struct drm_ioctl_desc
{
313 unsigned int cmd_drv
;
318 * Creates a driver or general drm_ioctl_desc array entry for the given
319 * ioctl, for use by drm_ioctl().
322 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
323 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
325 struct drm_magic_entry
{
326 struct list_head head
;
327 struct drm_hash_item hash_item
;
328 struct drm_file
*priv
;
331 struct drm_vma_entry
{
332 struct list_head head
;
333 struct vm_area_struct
*vma
;
341 int idx
; /**< Index into master buflist */
342 int total
; /**< Buffer size */
343 int order
; /**< log-base-2(total) */
344 int used
; /**< Amount of buffer in use (for DMA) */
345 unsigned long offset
; /**< Byte offset (used internally) */
346 void *address
; /**< Address of buffer */
347 unsigned long bus_address
; /**< Bus address of buffer */
348 struct drm_buf
*next
; /**< Kernel-only: used for free list */
349 __volatile__
int waiting
; /**< On kernel DMA queue */
350 __volatile__
int pending
; /**< On hardware DMA queue */
351 struct drm_file
*file_priv
; /**< Private of holding file descr */
352 int context
; /**< Kernel queue for this buffer */
353 int while_locked
; /**< Dispatch this buffer while locked */
361 } list
; /**< Which list we're on */
363 int dev_priv_size
; /**< Size of buffer private storage */
364 void *dev_private
; /**< Per-buffer private storage */
367 /** bufs is one longer than it has to be */
368 struct drm_waitlist
{
369 int count
; /**< Number of possible buffers */
370 struct drm_buf
**bufs
; /**< List of pointers to buffers */
371 struct drm_buf
**rp
; /**< Read pointer */
372 struct drm_buf
**wp
; /**< Write pointer */
373 struct drm_buf
**end
; /**< End pointer */
374 spinlock_t read_lock
;
375 spinlock_t write_lock
;
378 struct drm_freelist
{
379 int initialized
; /**< Freelist in use */
380 atomic_t count
; /**< Number of free buffers */
381 struct drm_buf
*next
; /**< End pointer */
383 wait_queue_head_t waiting
; /**< Processes waiting on free bufs */
384 int low_mark
; /**< Low water mark */
385 int high_mark
; /**< High water mark */
386 atomic_t wfh
; /**< If waiting for high mark */
390 typedef struct drm_dma_handle
{
397 * Buffer entry. There is one of this for each buffer size order.
399 struct drm_buf_entry
{
400 int buf_size
; /**< size */
401 int buf_count
; /**< number of buffers */
402 struct drm_buf
*buflist
; /**< buffer list */
405 struct drm_dma_handle
**seglist
;
407 struct drm_freelist freelist
;
410 /* Event queued up for userspace to read */
411 struct drm_pending_event
{
412 struct drm_event
*event
;
413 struct list_head link
;
414 struct drm_file
*file_priv
;
415 pid_t pid
; /* pid of requester, no guarantee it's valid by the time
416 we deliver the event, for tracing only */
417 void (*destroy
)(struct drm_pending_event
*event
);
420 /* initial implementaton using a linked list - todo hashtab */
421 struct drm_prime_file_private
{
422 struct list_head head
;
426 /** File private data */
432 unsigned long ioctl_count
;
433 struct list_head lhead
;
434 struct drm_minor
*minor
;
435 unsigned long lock_count
;
437 /** Mapping of mm object handles to object pointers. */
438 struct idr object_idr
;
439 /** Lock for synchronization of access to object_idr. */
440 spinlock_t table_lock
;
445 int is_master
; /* this file private is a master for a minor */
446 struct drm_master
*master
; /* master this node is currently associated with
447 N.B. not always minor->master */
450 * fbs - List of framebuffers associated with this file.
452 * Protected by fbs_lock. Note that the fbs list holds a reference on
453 * the fb object to prevent it from untimely disappearing.
455 struct list_head fbs
;
456 struct mutex fbs_lock
;
458 wait_queue_head_t event_wait
;
459 struct list_head event_list
;
462 struct drm_prime_file_private prime
;
467 atomic_t use_count
; /**< Outstanding uses (+1) */
468 atomic_t finalization
; /**< Finalization in progress */
469 atomic_t block_count
; /**< Count of processes waiting */
470 atomic_t block_read
; /**< Queue blocked for reads */
471 wait_queue_head_t read_queue
; /**< Processes waiting on block_read */
472 atomic_t block_write
; /**< Queue blocked for writes */
473 wait_queue_head_t write_queue
; /**< Processes waiting on block_write */
474 atomic_t total_queued
; /**< Total queued statistic */
475 atomic_t total_flushed
; /**< Total flushes statistic */
476 atomic_t total_locks
; /**< Total locks statistics */
477 enum drm_ctx_flags flags
; /**< Context preserving and 2D-only */
478 struct drm_waitlist waitlist
; /**< Pending buffers */
479 wait_queue_head_t flush_queue
; /**< Processes waiting until flush */
485 struct drm_lock_data
{
486 struct drm_hw_lock
*hw_lock
; /**< Hardware lock */
487 /** Private of lock holder's file (NULL=kernel) */
488 struct drm_file
*file_priv
;
489 wait_queue_head_t lock_queue
; /**< Queue of blocked processes */
490 unsigned long lock_time
; /**< Time of last lock in jiffies */
492 uint32_t kernel_waiters
;
493 uint32_t user_waiters
;
500 struct drm_device_dma
{
502 struct drm_buf_entry bufs
[DRM_MAX_ORDER
+ 1]; /**< buffers, grouped by their size order */
503 int buf_count
; /**< total number of buffers */
504 struct drm_buf
**buflist
; /**< Vector of pointers into drm_device_dma::bufs */
506 int page_count
; /**< number of pages */
507 unsigned long *pagelist
; /**< page list */
508 unsigned long byte_count
;
510 _DRM_DMA_USE_AGP
= 0x01,
511 _DRM_DMA_USE_SG
= 0x02,
512 _DRM_DMA_USE_FB
= 0x04,
513 _DRM_DMA_USE_PCI_RO
= 0x08
519 * AGP memory entry. Stored as a doubly linked list.
522 unsigned long handle
; /**< handle */
524 unsigned long bound
; /**< address */
526 struct list_head head
;
532 * \sa drm_agp_init() and drm_device::agp.
534 struct drm_agp_head
{
535 DRM_AGP_KERN agp_info
; /**< AGP device information */
536 struct list_head memory
;
537 unsigned long mode
; /**< AGP mode */
538 struct agp_bridge_data
*bridge
;
539 int enabled
; /**< whether the AGP bus as been enabled */
540 int acquired
; /**< whether the AGP device has been acquired */
543 int cant_use_aperture
;
544 unsigned long page_mask
;
548 * Scatter-gather memory.
551 unsigned long handle
;
554 struct page
**pagelist
;
560 struct drm_hw_lock
*lock
;
565 * Kernel side of a mapping
567 struct drm_local_map
{
568 resource_size_t offset
; /**< Requested physical address (0 for SAREA)*/
569 unsigned long size
; /**< Requested physical size (bytes) */
570 enum drm_map_type type
; /**< Type of memory to map */
571 enum drm_map_flags flags
; /**< Flags */
572 void *handle
; /**< User-space: "Handle" to pass to mmap() */
573 /**< Kernel-space: kernel-virtual address */
574 int mtrr
; /**< MTRR slot used */
577 typedef struct drm_local_map drm_local_map_t
;
582 struct drm_map_list
{
583 struct list_head head
; /**< list head */
584 struct drm_hash_item hash
;
585 struct drm_local_map
*map
; /**< mapping */
587 struct drm_master
*master
;
591 * Context handle list
593 struct drm_ctx_list
{
594 struct list_head head
; /**< list head */
595 drm_context_t handle
; /**< context handle */
596 struct drm_file
*tag
; /**< associated fd private data */
599 /* location of GART table */
600 #define DRM_ATI_GART_MAIN 1
601 #define DRM_ATI_GART_FB 2
603 #define DRM_ATI_GART_PCI 1
604 #define DRM_ATI_GART_PCIE 2
605 #define DRM_ATI_GART_IGP 3
607 struct drm_ati_pcigart_info
{
608 int gart_table_location
;
612 dma_addr_t table_mask
;
613 struct drm_dma_handle
*table_handle
;
614 struct drm_local_map mapping
;
619 * GEM specific mm private for tracking GEM objects
622 struct drm_vma_offset_manager vma_manager
;
626 * This structure defines the drm_mm memory object, which will be used by the
627 * DRM for its buffer objects.
629 struct drm_gem_object
{
630 /** Reference count of this object */
631 struct kref refcount
;
633 /** Handle count of this object. Each handle also holds a reference */
634 atomic_t handle_count
; /* number of handles on this object */
636 /** Related drm device */
637 struct drm_device
*dev
;
639 /** File representing the shmem storage */
642 /* Mapping info for this object */
643 struct drm_vma_offset_node vma_node
;
646 * Size of the object, in bytes. Immutable over the object's
652 * Global name for this object, starts at 1. 0 means unnamed.
653 * Access is covered by the object_name_lock in the related drm_device
658 * Memory domains. These monitor which caches contain read/write data
659 * related to the object. When transitioning from one set of domains
660 * to another, the driver is called to ensure that caches are suitably
661 * flushed and invalidated
663 uint32_t read_domains
;
664 uint32_t write_domain
;
667 * While validating an exec operation, the
668 * new read/write domain values are computed here.
669 * They will be transferred to the above values
670 * at the point that any cache flushing occurs
672 uint32_t pending_read_domains
;
673 uint32_t pending_write_domain
;
675 void *driver_private
;
677 /* dma buf exported from this GEM object */
678 struct dma_buf
*export_dma_buf
;
680 /* dma buf attachment backing this object */
681 struct dma_buf_attachment
*import_attach
;
684 #include <drm/drm_crtc.h>
686 /* per-master structure */
689 struct kref refcount
; /* refcount for this master */
691 struct list_head head
; /**< each minor contains a list of masters */
692 struct drm_minor
*minor
; /**< link back to minor we are a master for */
694 char *unique
; /**< Unique identifier: e.g., busid */
695 int unique_len
; /**< Length of unique field */
696 int unique_size
; /**< amount allocated */
698 int blocked
; /**< Blocked due to VC switch? */
700 /** \name Authentication */
702 struct drm_open_hash magiclist
;
703 struct list_head magicfree
;
706 struct drm_lock_data lock
; /**< Information on hardware lock */
708 void *driver_priv
; /**< Private structure for driver to use */
711 /* Size of ringbuffer for vblank timestamps. Just double-buffer
712 * in initial implementation.
714 #define DRM_VBLANKTIME_RBSIZE 2
716 /* Flags and return codes for get_vblank_timestamp() driver function. */
717 #define DRM_CALLED_FROM_VBLIRQ 1
718 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
719 #define DRM_VBLANKTIME_INVBL (1 << 1)
721 /* get_scanout_position() return flags */
722 #define DRM_SCANOUTPOS_VALID (1 << 0)
723 #define DRM_SCANOUTPOS_INVBL (1 << 1)
724 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
728 int (*get_irq
)(struct drm_device
*dev
);
729 const char *(*get_name
)(struct drm_device
*dev
);
730 int (*set_busid
)(struct drm_device
*dev
, struct drm_master
*master
);
731 int (*set_unique
)(struct drm_device
*dev
, struct drm_master
*master
,
732 struct drm_unique
*unique
);
733 int (*irq_by_busid
)(struct drm_device
*dev
, struct drm_irq_busid
*p
);
734 /* hooks that are for PCI */
735 int (*agp_init
)(struct drm_device
*dev
);
736 void (*agp_destroy
)(struct drm_device
*dev
);
741 * DRM driver structure. This structure represent the common code for
742 * a family of cards. There will one drm_device for each card present
746 int (*load
) (struct drm_device
*, unsigned long flags
);
747 int (*firstopen
) (struct drm_device
*);
748 int (*open
) (struct drm_device
*, struct drm_file
*);
749 void (*preclose
) (struct drm_device
*, struct drm_file
*file_priv
);
750 void (*postclose
) (struct drm_device
*, struct drm_file
*);
751 void (*lastclose
) (struct drm_device
*);
752 int (*unload
) (struct drm_device
*);
753 int (*suspend
) (struct drm_device
*, pm_message_t state
);
754 int (*resume
) (struct drm_device
*);
755 int (*dma_ioctl
) (struct drm_device
*dev
, void *data
, struct drm_file
*file_priv
);
756 int (*dma_quiescent
) (struct drm_device
*);
757 int (*context_dtor
) (struct drm_device
*dev
, int context
);
760 * get_vblank_counter - get raw hardware vblank counter
762 * @crtc: counter to fetch
764 * Driver callback for fetching a raw hardware vblank counter for @crtc.
765 * If a device doesn't have a hardware counter, the driver can simply
766 * return the value of drm_vblank_count. The DRM core will account for
767 * missed vblank events while interrupts where disabled based on system
770 * Wraparound handling and loss of events due to modesetting is dealt
771 * with in the DRM core code.
774 * Raw vblank counter value.
776 u32 (*get_vblank_counter
) (struct drm_device
*dev
, int crtc
);
779 * enable_vblank - enable vblank interrupt events
781 * @crtc: which irq to enable
783 * Enable vblank interrupts for @crtc. If the device doesn't have
784 * a hardware vblank counter, this routine should be a no-op, since
785 * interrupts will have to stay on to keep the count accurate.
788 * Zero on success, appropriate errno if the given @crtc's vblank
789 * interrupt cannot be enabled.
791 int (*enable_vblank
) (struct drm_device
*dev
, int crtc
);
794 * disable_vblank - disable vblank interrupt events
796 * @crtc: which irq to enable
798 * Disable vblank interrupts for @crtc. If the device doesn't have
799 * a hardware vblank counter, this routine should be a no-op, since
800 * interrupts will have to stay on to keep the count accurate.
802 void (*disable_vblank
) (struct drm_device
*dev
, int crtc
);
805 * Called by \c drm_device_is_agp. Typically used to determine if a
806 * card is really attached to AGP or not.
808 * \param dev DRM device handle
811 * One of three values is returned depending on whether or not the
812 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
813 * (return of 1), or may or may not be AGP (return of 2).
815 int (*device_is_agp
) (struct drm_device
*dev
);
818 * Called by vblank timestamping code.
820 * Return the current display scanout position from a crtc.
822 * \param dev DRM device.
823 * \param crtc Id of the crtc to query.
824 * \param *vpos Target location for current vertical scanout position.
825 * \param *hpos Target location for current horizontal scanout position.
827 * Returns vpos as a positive number while in active scanout area.
828 * Returns vpos as a negative number inside vblank, counting the number
829 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
830 * until start of active scanout / end of vblank."
832 * \return Flags, or'ed together as follows:
834 * DRM_SCANOUTPOS_VALID = Query successful.
835 * DRM_SCANOUTPOS_INVBL = Inside vblank.
836 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
837 * this flag means that returned position may be offset by a constant
838 * but unknown small number of scanlines wrt. real scanout position.
841 int (*get_scanout_position
) (struct drm_device
*dev
, int crtc
,
842 int *vpos
, int *hpos
);
845 * Called by \c drm_get_last_vbltimestamp. Should return a precise
846 * timestamp when the most recent VBLANK interval ended or will end.
848 * Specifically, the timestamp in @vblank_time should correspond as
849 * closely as possible to the time when the first video scanline of
850 * the video frame after the end of VBLANK will start scanning out,
851 * the time immediately after end of the VBLANK interval. If the
852 * @crtc is currently inside VBLANK, this will be a time in the future.
853 * If the @crtc is currently scanning out a frame, this will be the
854 * past start time of the current scanout. This is meant to adhere
855 * to the OpenML OML_sync_control extension specification.
857 * \param dev dev DRM device handle.
858 * \param crtc crtc for which timestamp should be returned.
859 * \param *max_error Maximum allowable timestamp error in nanoseconds.
860 * Implementation should strive to provide timestamp
861 * with an error of at most *max_error nanoseconds.
862 * Returns true upper bound on error for timestamp.
863 * \param *vblank_time Target location for returned vblank timestamp.
864 * \param flags 0 = Defaults, no special treatment needed.
865 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
866 * irq handler. Some drivers need to apply some workarounds
867 * for gpu-specific vblank irq quirks if flag is set.
870 * Zero if timestamping isn't supported in current display mode or a
871 * negative number on failure. A positive status code on success,
872 * which describes how the vblank_time timestamp was computed.
874 int (*get_vblank_timestamp
) (struct drm_device
*dev
, int crtc
,
876 struct timeval
*vblank_time
,
879 /* these have to be filled in */
881 irqreturn_t(*irq_handler
) (DRM_IRQ_ARGS
);
882 void (*irq_preinstall
) (struct drm_device
*dev
);
883 int (*irq_postinstall
) (struct drm_device
*dev
);
884 void (*irq_uninstall
) (struct drm_device
*dev
);
886 /* Master routines */
887 int (*master_create
)(struct drm_device
*dev
, struct drm_master
*master
);
888 void (*master_destroy
)(struct drm_device
*dev
, struct drm_master
*master
);
890 * master_set is called whenever the minor master is set.
891 * master_drop is called whenever the minor master is dropped.
894 int (*master_set
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
896 void (*master_drop
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
899 int (*debugfs_init
)(struct drm_minor
*minor
);
900 void (*debugfs_cleanup
)(struct drm_minor
*minor
);
903 * Driver-specific constructor for drm_gem_objects, to set up
904 * obj->driver_private.
906 * Returns 0 on success.
908 int (*gem_init_object
) (struct drm_gem_object
*obj
);
909 void (*gem_free_object
) (struct drm_gem_object
*obj
);
910 int (*gem_open_object
) (struct drm_gem_object
*, struct drm_file
*);
911 void (*gem_close_object
) (struct drm_gem_object
*, struct drm_file
*);
914 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
915 int (*prime_handle_to_fd
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
916 uint32_t handle
, uint32_t flags
, int *prime_fd
);
917 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
918 int (*prime_fd_to_handle
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
919 int prime_fd
, uint32_t *handle
);
920 /* export GEM -> dmabuf */
921 struct dma_buf
* (*gem_prime_export
)(struct drm_device
*dev
,
922 struct drm_gem_object
*obj
, int flags
);
923 /* import dmabuf -> GEM */
924 struct drm_gem_object
* (*gem_prime_import
)(struct drm_device
*dev
,
925 struct dma_buf
*dma_buf
);
926 /* low-level interface used by drm_gem_prime_{import,export} */
927 int (*gem_prime_pin
)(struct drm_gem_object
*obj
);
928 void (*gem_prime_unpin
)(struct drm_gem_object
*obj
);
929 struct sg_table
*(*gem_prime_get_sg_table
)(struct drm_gem_object
*obj
);
930 struct drm_gem_object
*(*gem_prime_import_sg_table
)(
931 struct drm_device
*dev
, size_t size
,
932 struct sg_table
*sgt
);
933 void *(*gem_prime_vmap
)(struct drm_gem_object
*obj
);
934 void (*gem_prime_vunmap
)(struct drm_gem_object
*obj
, void *vaddr
);
935 int (*gem_prime_mmap
)(struct drm_gem_object
*obj
,
936 struct vm_area_struct
*vma
);
938 /* vga arb irq handler */
939 void (*vgaarb_irq
)(struct drm_device
*dev
, bool state
);
941 /* dumb alloc support */
942 int (*dumb_create
)(struct drm_file
*file_priv
,
943 struct drm_device
*dev
,
944 struct drm_mode_create_dumb
*args
);
945 int (*dumb_map_offset
)(struct drm_file
*file_priv
,
946 struct drm_device
*dev
, uint32_t handle
,
948 int (*dumb_destroy
)(struct drm_file
*file_priv
,
949 struct drm_device
*dev
,
952 /* Driver private ops for this object */
953 const struct vm_operations_struct
*gem_vm_ops
;
964 const struct drm_ioctl_desc
*ioctls
;
966 const struct file_operations
*fops
;
968 struct pci_driver
*pci
;
969 struct platform_device
*platform_device
;
970 struct usb_driver
*usb
;
974 /* List of devices hanging off this driver */
975 struct list_head device_list
;
978 #define DRM_MINOR_UNASSIGNED 0
979 #define DRM_MINOR_LEGACY 1
980 #define DRM_MINOR_CONTROL 2
981 #define DRM_MINOR_RENDER 3
985 * debugfs node list. This structure represents a debugfs file to
986 * be created by the drm core
988 struct drm_debugfs_list
{
989 const char *name
; /** file name */
990 int (*show
)(struct seq_file
*, void*); /** show callback */
991 u32 driver_features
; /**< Required driver features for this entry */
995 * debugfs node structure. This structure represents a debugfs file.
997 struct drm_debugfs_node
{
998 struct list_head list
;
999 struct drm_minor
*minor
;
1000 struct drm_debugfs_list
*debugfs_ent
;
1001 struct dentry
*dent
;
1005 * Info file list entry. This structure represents a debugfs or proc file to
1006 * be created by the drm core
1008 struct drm_info_list
{
1009 const char *name
; /** file name */
1010 int (*show
)(struct seq_file
*, void*); /** show callback */
1011 u32 driver_features
; /**< Required driver features for this entry */
1016 * debugfs node structure. This structure represents a debugfs file.
1018 struct drm_info_node
{
1019 struct list_head list
;
1020 struct drm_minor
*minor
;
1021 const struct drm_info_list
*info_ent
;
1022 struct dentry
*dent
;
1026 * DRM minor structure. This structure represents a drm minor number.
1029 int index
; /**< Minor device number */
1030 int type
; /**< Control or render */
1031 dev_t device
; /**< Device number for mknod */
1032 struct device kdev
; /**< Linux device */
1033 struct drm_device
*dev
;
1035 struct proc_dir_entry
*proc_root
; /**< proc directory entry */
1036 struct drm_info_node proc_nodes
;
1037 struct dentry
*debugfs_root
;
1039 struct list_head debugfs_list
;
1040 struct mutex debugfs_lock
; /* Protects debugfs_list. */
1042 struct drm_master
*master
; /* currently active master for this node */
1043 struct list_head master_list
;
1044 struct drm_mode_group mode_group
;
1047 /* mode specified on the command line */
1048 struct drm_cmdline_mode
{
1050 bool refresh_specified
;
1059 enum drm_connector_force force
;
1063 struct drm_pending_vblank_event
{
1064 struct drm_pending_event base
;
1066 struct drm_event_vblank event
;
1070 * DRM device structure. This structure represent a complete card that
1071 * may contain multiple heads.
1074 struct list_head driver_item
; /**< list of devices per driver */
1075 char *devname
; /**< For /proc/interrupts */
1076 int if_version
; /**< Highest interface version set */
1080 spinlock_t count_lock
; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1081 struct mutex struct_mutex
; /**< For others */
1084 /** \name Usage Counters */
1086 int open_count
; /**< Outstanding files open */
1087 atomic_t ioctl_count
; /**< Outstanding IOCTLs pending */
1088 atomic_t vma_count
; /**< Outstanding vma areas open */
1089 int buf_use
; /**< Buffers in use -- cannot alloc */
1090 atomic_t buf_alloc
; /**< Buffer allocation in progress */
1093 /** \name Performance counters */
1095 unsigned long counters
;
1096 enum drm_stat_type types
[15];
1097 atomic_t counts
[15];
1100 struct list_head filelist
;
1102 /** \name Memory management */
1104 struct list_head maplist
; /**< Linked list of regions */
1105 int map_count
; /**< Number of mappable regions */
1106 struct drm_open_hash map_hash
; /**< User token hash table for maps */
1108 /** \name Context handle management */
1110 struct list_head ctxlist
; /**< Linked list of context handles */
1111 int ctx_count
; /**< Number of context handles */
1112 struct mutex ctxlist_mutex
; /**< For ctxlist */
1116 struct list_head vmalist
; /**< List of vmas (for debugging) */
1120 /** \name DMA support */
1122 struct drm_device_dma
*dma
; /**< Optional pointer for DMA support */
1125 /** \name Context support */
1127 int irq_enabled
; /**< True if irq handler is enabled */
1128 __volatile__
long context_flag
; /**< Context swapping flag */
1129 int last_context
; /**< Last current context */
1132 struct work_struct work
;
1133 /** \name VBLANK IRQ support */
1137 * At load time, disabling the vblank interrupt won't be allowed since
1138 * old clients may not call the modeset ioctl and therefore misbehave.
1139 * Once the modeset ioctl *has* been called though, we can safely
1140 * disable them when unused.
1142 int vblank_disable_allowed
;
1144 wait_queue_head_t
*vbl_queue
; /**< VBLANK wait queue */
1145 atomic_t
*_vblank_count
; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1146 struct timeval
*_vblank_time
; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1147 spinlock_t vblank_time_lock
; /**< Protects vblank count and time updates during vblank enable/disable */
1148 spinlock_t vbl_lock
;
1149 atomic_t
*vblank_refcount
; /* number of users of vblank interruptsper crtc */
1150 u32
*last_vblank
; /* protected by dev->vbl_lock, used */
1151 /* for wraparound handling */
1152 int *vblank_enabled
; /* so we don't call enable more than
1154 int *vblank_inmodeset
; /* Display driver is setting mode */
1155 u32
*last_vblank_wait
; /* Last vblank seqno waited per CRTC */
1156 struct timer_list vblank_disable_timer
;
1158 u32 max_vblank_count
; /**< size of vblank counter register */
1163 struct list_head vblank_event_list
;
1164 spinlock_t event_lock
;
1168 struct drm_agp_head
*agp
; /**< AGP data */
1170 struct device
*dev
; /**< Device structure */
1171 struct pci_dev
*pdev
; /**< PCI device structure */
1172 int pci_vendor
; /**< PCI vendor id */
1173 int pci_device
; /**< PCI device id */
1175 struct pci_controller
*hose
;
1178 struct platform_device
*platformdev
; /**< Platform device struture */
1179 struct usb_device
*usbdev
;
1181 struct drm_sg_mem
*sg
; /**< Scatter gather memory */
1182 unsigned int num_crtcs
; /**< Number of CRTCs on this device */
1183 void *dev_private
; /**< device private data */
1185 struct address_space
*dev_mapping
;
1186 struct drm_sigdata sigdata
; /**< For block_all_signals */
1189 struct drm_driver
*driver
;
1190 struct drm_local_map
*agp_buffer_map
;
1191 unsigned int agp_buffer_token
;
1192 struct drm_minor
*control
; /**< Control node for card */
1193 struct drm_minor
*primary
; /**< render type primary screen head */
1195 struct drm_mode_config mode_config
; /**< Current mode config */
1197 /** \name GEM information */
1199 spinlock_t object_name_lock
;
1200 struct idr object_name_idr
;
1202 int switch_power_state
;
1204 atomic_t unplugged
; /* device has been unplugged or gone away */
1207 #define DRM_SWITCH_POWER_ON 0
1208 #define DRM_SWITCH_POWER_OFF 1
1209 #define DRM_SWITCH_POWER_CHANGING 2
1211 static __inline__
int drm_core_check_feature(struct drm_device
*dev
,
1214 return ((dev
->driver
->driver_features
& feature
) ? 1 : 0);
1217 static inline int drm_dev_to_irq(struct drm_device
*dev
)
1219 return dev
->driver
->bus
->get_irq(dev
);
1223 static inline int drm_core_has_MTRR(struct drm_device
*dev
)
1225 return drm_core_check_feature(dev
, DRIVER_USE_MTRR
);
1228 #define drm_core_has_MTRR(dev) (0)
1231 static inline void drm_device_set_unplugged(struct drm_device
*dev
)
1234 atomic_set(&dev
->unplugged
, 1);
1237 static inline int drm_device_is_unplugged(struct drm_device
*dev
)
1239 int ret
= atomic_read(&dev
->unplugged
);
1244 static inline bool drm_modeset_is_locked(struct drm_device
*dev
)
1246 return mutex_is_locked(&dev
->mode_config
.mutex
);
1249 /******************************************************************/
1250 /** \name Internal function definitions */
1253 /* Driver support (drm_drv.h) */
1254 extern long drm_ioctl(struct file
*filp
,
1255 unsigned int cmd
, unsigned long arg
);
1256 extern long drm_compat_ioctl(struct file
*filp
,
1257 unsigned int cmd
, unsigned long arg
);
1258 extern int drm_lastclose(struct drm_device
*dev
);
1260 /* Device support (drm_fops.h) */
1261 extern struct mutex drm_global_mutex
;
1262 extern int drm_open(struct inode
*inode
, struct file
*filp
);
1263 extern int drm_stub_open(struct inode
*inode
, struct file
*filp
);
1264 extern ssize_t
drm_read(struct file
*filp
, char __user
*buffer
,
1265 size_t count
, loff_t
*offset
);
1266 extern int drm_release(struct inode
*inode
, struct file
*filp
);
1268 /* Mapping support (drm_vm.h) */
1269 extern int drm_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1270 extern int drm_mmap_locked(struct file
*filp
, struct vm_area_struct
*vma
);
1271 extern void drm_vm_open_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1272 extern void drm_vm_close_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1273 extern unsigned int drm_poll(struct file
*filp
, struct poll_table_struct
*wait
);
1275 /* Memory management support (drm_memory.h) */
1276 #include <drm/drm_memory.h>
1278 /* Misc. IOCTL support (drm_ioctl.h) */
1279 extern int drm_irq_by_busid(struct drm_device
*dev
, void *data
,
1280 struct drm_file
*file_priv
);
1281 extern int drm_getunique(struct drm_device
*dev
, void *data
,
1282 struct drm_file
*file_priv
);
1283 extern int drm_setunique(struct drm_device
*dev
, void *data
,
1284 struct drm_file
*file_priv
);
1285 extern int drm_getmap(struct drm_device
*dev
, void *data
,
1286 struct drm_file
*file_priv
);
1287 extern int drm_getclient(struct drm_device
*dev
, void *data
,
1288 struct drm_file
*file_priv
);
1289 extern int drm_getstats(struct drm_device
*dev
, void *data
,
1290 struct drm_file
*file_priv
);
1291 extern int drm_getcap(struct drm_device
*dev
, void *data
,
1292 struct drm_file
*file_priv
);
1293 extern int drm_setversion(struct drm_device
*dev
, void *data
,
1294 struct drm_file
*file_priv
);
1295 extern int drm_noop(struct drm_device
*dev
, void *data
,
1296 struct drm_file
*file_priv
);
1298 /* Context IOCTL support (drm_context.h) */
1299 extern int drm_resctx(struct drm_device
*dev
, void *data
,
1300 struct drm_file
*file_priv
);
1301 extern int drm_addctx(struct drm_device
*dev
, void *data
,
1302 struct drm_file
*file_priv
);
1303 extern int drm_getctx(struct drm_device
*dev
, void *data
,
1304 struct drm_file
*file_priv
);
1305 extern int drm_switchctx(struct drm_device
*dev
, void *data
,
1306 struct drm_file
*file_priv
);
1307 extern int drm_newctx(struct drm_device
*dev
, void *data
,
1308 struct drm_file
*file_priv
);
1309 extern int drm_rmctx(struct drm_device
*dev
, void *data
,
1310 struct drm_file
*file_priv
);
1312 extern void drm_legacy_ctxbitmap_init(struct drm_device
*dev
);
1313 extern void drm_legacy_ctxbitmap_cleanup(struct drm_device
*dev
);
1314 extern void drm_legacy_ctxbitmap_release(struct drm_device
*dev
,
1315 struct drm_file
*file_priv
);
1317 extern int drm_setsareactx(struct drm_device
*dev
, void *data
,
1318 struct drm_file
*file_priv
);
1319 extern int drm_getsareactx(struct drm_device
*dev
, void *data
,
1320 struct drm_file
*file_priv
);
1322 /* Authentication IOCTL support (drm_auth.h) */
1323 extern int drm_getmagic(struct drm_device
*dev
, void *data
,
1324 struct drm_file
*file_priv
);
1325 extern int drm_authmagic(struct drm_device
*dev
, void *data
,
1326 struct drm_file
*file_priv
);
1327 extern int drm_remove_magic(struct drm_master
*master
, drm_magic_t magic
);
1329 /* Cache management (drm_cache.c) */
1330 void drm_clflush_pages(struct page
*pages
[], unsigned long num_pages
);
1331 void drm_clflush_sg(struct sg_table
*st
);
1332 void drm_clflush_virt_range(char *addr
, unsigned long length
);
1334 /* Locking IOCTL support (drm_lock.h) */
1335 extern int drm_lock(struct drm_device
*dev
, void *data
,
1336 struct drm_file
*file_priv
);
1337 extern int drm_unlock(struct drm_device
*dev
, void *data
,
1338 struct drm_file
*file_priv
);
1339 extern int drm_lock_free(struct drm_lock_data
*lock_data
, unsigned int context
);
1340 extern void drm_idlelock_take(struct drm_lock_data
*lock_data
);
1341 extern void drm_idlelock_release(struct drm_lock_data
*lock_data
);
1344 * These are exported to drivers so that they can implement fencing using
1345 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1348 extern int drm_i_have_hw_lock(struct drm_device
*dev
, struct drm_file
*file_priv
);
1350 /* Buffer management support (drm_bufs.h) */
1351 extern int drm_addbufs_agp(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1352 extern int drm_addbufs_pci(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1353 extern int drm_addmap(struct drm_device
*dev
, resource_size_t offset
,
1354 unsigned int size
, enum drm_map_type type
,
1355 enum drm_map_flags flags
, struct drm_local_map
**map_ptr
);
1356 extern int drm_addmap_ioctl(struct drm_device
*dev
, void *data
,
1357 struct drm_file
*file_priv
);
1358 extern int drm_rmmap(struct drm_device
*dev
, struct drm_local_map
*map
);
1359 extern int drm_rmmap_locked(struct drm_device
*dev
, struct drm_local_map
*map
);
1360 extern int drm_rmmap_ioctl(struct drm_device
*dev
, void *data
,
1361 struct drm_file
*file_priv
);
1362 extern int drm_addbufs(struct drm_device
*dev
, void *data
,
1363 struct drm_file
*file_priv
);
1364 extern int drm_infobufs(struct drm_device
*dev
, void *data
,
1365 struct drm_file
*file_priv
);
1366 extern int drm_markbufs(struct drm_device
*dev
, void *data
,
1367 struct drm_file
*file_priv
);
1368 extern int drm_freebufs(struct drm_device
*dev
, void *data
,
1369 struct drm_file
*file_priv
);
1370 extern int drm_mapbufs(struct drm_device
*dev
, void *data
,
1371 struct drm_file
*file_priv
);
1373 /* DMA support (drm_dma.h) */
1374 extern int drm_legacy_dma_setup(struct drm_device
*dev
);
1375 extern void drm_legacy_dma_takedown(struct drm_device
*dev
);
1376 extern void drm_free_buffer(struct drm_device
*dev
, struct drm_buf
* buf
);
1377 extern void drm_core_reclaim_buffers(struct drm_device
*dev
,
1378 struct drm_file
*filp
);
1380 /* IRQ support (drm_irq.h) */
1381 extern int drm_control(struct drm_device
*dev
, void *data
,
1382 struct drm_file
*file_priv
);
1383 extern int drm_irq_install(struct drm_device
*dev
);
1384 extern int drm_irq_uninstall(struct drm_device
*dev
);
1386 extern int drm_vblank_init(struct drm_device
*dev
, int num_crtcs
);
1387 extern int drm_wait_vblank(struct drm_device
*dev
, void *data
,
1388 struct drm_file
*filp
);
1389 extern int drm_vblank_wait(struct drm_device
*dev
, unsigned int *vbl_seq
);
1390 extern u32
drm_vblank_count(struct drm_device
*dev
, int crtc
);
1391 extern u32
drm_vblank_count_and_time(struct drm_device
*dev
, int crtc
,
1392 struct timeval
*vblanktime
);
1393 extern void drm_send_vblank_event(struct drm_device
*dev
, int crtc
,
1394 struct drm_pending_vblank_event
*e
);
1395 extern bool drm_handle_vblank(struct drm_device
*dev
, int crtc
);
1396 extern int drm_vblank_get(struct drm_device
*dev
, int crtc
);
1397 extern void drm_vblank_put(struct drm_device
*dev
, int crtc
);
1398 extern void drm_vblank_off(struct drm_device
*dev
, int crtc
);
1399 extern void drm_vblank_cleanup(struct drm_device
*dev
);
1400 extern u32
drm_get_last_vbltimestamp(struct drm_device
*dev
, int crtc
,
1401 struct timeval
*tvblank
, unsigned flags
);
1402 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device
*dev
,
1403 int crtc
, int *max_error
,
1404 struct timeval
*vblank_time
,
1406 struct drm_crtc
*refcrtc
);
1407 extern void drm_calc_timestamping_constants(struct drm_crtc
*crtc
);
1410 drm_mode_parse_command_line_for_connector(const char *mode_option
,
1411 struct drm_connector
*connector
,
1412 struct drm_cmdline_mode
*mode
);
1414 extern struct drm_display_mode
*
1415 drm_mode_create_from_cmdline_mode(struct drm_device
*dev
,
1416 struct drm_cmdline_mode
*cmd
);
1418 extern int drm_display_mode_from_videomode(const struct videomode
*vm
,
1419 struct drm_display_mode
*dmode
);
1420 extern int of_get_drm_display_mode(struct device_node
*np
,
1421 struct drm_display_mode
*dmode
,
1424 /* Modesetting support */
1425 extern void drm_vblank_pre_modeset(struct drm_device
*dev
, int crtc
);
1426 extern void drm_vblank_post_modeset(struct drm_device
*dev
, int crtc
);
1427 extern int drm_modeset_ctl(struct drm_device
*dev
, void *data
,
1428 struct drm_file
*file_priv
);
1430 /* AGP/GART support (drm_agpsupport.h) */
1432 #include <drm/drm_agpsupport.h>
1434 /* Stub support (drm_stub.h) */
1435 extern int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
1436 struct drm_file
*file_priv
);
1437 extern int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
1438 struct drm_file
*file_priv
);
1439 struct drm_master
*drm_master_create(struct drm_minor
*minor
);
1440 extern struct drm_master
*drm_master_get(struct drm_master
*master
);
1441 extern void drm_master_put(struct drm_master
**master
);
1443 extern void drm_put_dev(struct drm_device
*dev
);
1444 extern int drm_put_minor(struct drm_minor
**minor
);
1445 extern void drm_unplug_dev(struct drm_device
*dev
);
1446 extern unsigned int drm_debug
;
1448 extern unsigned int drm_vblank_offdelay
;
1449 extern unsigned int drm_timestamp_precision
;
1450 extern unsigned int drm_timestamp_monotonic
;
1452 extern struct class *drm_class
;
1453 extern struct proc_dir_entry
*drm_proc_root
;
1454 extern struct dentry
*drm_debugfs_root
;
1456 extern struct idr drm_minors_idr
;
1458 extern struct drm_local_map
*drm_getsarea(struct drm_device
*dev
);
1460 /* Proc support (drm_proc.h) */
1461 extern int drm_proc_init(struct drm_minor
*minor
, struct proc_dir_entry
*root
);
1462 extern int drm_proc_cleanup(struct drm_minor
*minor
, struct proc_dir_entry
*root
);
1464 /* Debugfs support */
1465 #if defined(CONFIG_DEBUG_FS)
1466 extern int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1467 struct dentry
*root
);
1468 extern int drm_debugfs_create_files(struct drm_info_list
*files
, int count
,
1469 struct dentry
*root
, struct drm_minor
*minor
);
1470 extern int drm_debugfs_remove_files(struct drm_info_list
*files
, int count
,
1471 struct drm_minor
*minor
);
1472 extern int drm_debugfs_cleanup(struct drm_minor
*minor
);
1475 /* Info file support */
1476 extern int drm_name_info(struct seq_file
*m
, void *data
);
1477 extern int drm_vm_info(struct seq_file
*m
, void *data
);
1478 extern int drm_bufs_info(struct seq_file
*m
, void *data
);
1479 extern int drm_vblank_info(struct seq_file
*m
, void *data
);
1480 extern int drm_clients_info(struct seq_file
*m
, void* data
);
1481 extern int drm_gem_name_info(struct seq_file
*m
, void *data
);
1484 extern struct dma_buf
*drm_gem_prime_export(struct drm_device
*dev
,
1485 struct drm_gem_object
*obj
, int flags
);
1486 extern int drm_gem_prime_handle_to_fd(struct drm_device
*dev
,
1487 struct drm_file
*file_priv
, uint32_t handle
, uint32_t flags
,
1489 extern struct drm_gem_object
*drm_gem_prime_import(struct drm_device
*dev
,
1490 struct dma_buf
*dma_buf
);
1491 extern int drm_gem_prime_fd_to_handle(struct drm_device
*dev
,
1492 struct drm_file
*file_priv
, int prime_fd
, uint32_t *handle
);
1494 extern int drm_prime_handle_to_fd_ioctl(struct drm_device
*dev
, void *data
,
1495 struct drm_file
*file_priv
);
1496 extern int drm_prime_fd_to_handle_ioctl(struct drm_device
*dev
, void *data
,
1497 struct drm_file
*file_priv
);
1499 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table
*sgt
, struct page
**pages
,
1500 dma_addr_t
*addrs
, int max_pages
);
1501 extern struct sg_table
*drm_prime_pages_to_sg(struct page
**pages
, int nr_pages
);
1502 extern void drm_prime_gem_destroy(struct drm_gem_object
*obj
, struct sg_table
*sg
);
1504 int drm_gem_dumb_destroy(struct drm_file
*file
,
1505 struct drm_device
*dev
,
1508 void drm_prime_init_file_private(struct drm_prime_file_private
*prime_fpriv
);
1509 void drm_prime_destroy_file_private(struct drm_prime_file_private
*prime_fpriv
);
1510 int drm_prime_lookup_buf_handle(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
, uint32_t *handle
);
1511 void drm_prime_remove_buf_handle(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
);
1513 int drm_prime_add_dma_buf(struct drm_device
*dev
, struct drm_gem_object
*obj
);
1514 int drm_prime_lookup_obj(struct drm_device
*dev
, struct dma_buf
*buf
,
1515 struct drm_gem_object
**obj
);
1518 extern int drm_vma_info(struct seq_file
*m
, void *data
);
1521 /* Scatter Gather Support (drm_scatter.h) */
1522 extern void drm_legacy_sg_cleanup(struct drm_device
*dev
);
1523 extern int drm_sg_alloc(struct drm_device
*dev
, void *data
,
1524 struct drm_file
*file_priv
);
1525 extern int drm_sg_free(struct drm_device
*dev
, void *data
,
1526 struct drm_file
*file_priv
);
1528 /* ATI PCIGART support (ati_pcigart.h) */
1529 extern int drm_ati_pcigart_init(struct drm_device
*dev
,
1530 struct drm_ati_pcigart_info
* gart_info
);
1531 extern int drm_ati_pcigart_cleanup(struct drm_device
*dev
,
1532 struct drm_ati_pcigart_info
* gart_info
);
1534 extern drm_dma_handle_t
*drm_pci_alloc(struct drm_device
*dev
, size_t size
,
1536 extern void __drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1537 extern void drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1539 /* sysfs support (drm_sysfs.c) */
1540 struct drm_sysfs_class
;
1541 extern struct class *drm_sysfs_create(struct module
*owner
, char *name
);
1542 extern void drm_sysfs_destroy(void);
1543 extern int drm_sysfs_device_add(struct drm_minor
*minor
);
1544 extern void drm_sysfs_hotplug_event(struct drm_device
*dev
);
1545 extern void drm_sysfs_device_remove(struct drm_minor
*minor
);
1546 extern int drm_sysfs_connector_add(struct drm_connector
*connector
);
1547 extern void drm_sysfs_connector_remove(struct drm_connector
*connector
);
1549 /* Graphics Execution Manager library functions (drm_gem.c) */
1550 int drm_gem_init(struct drm_device
*dev
);
1551 void drm_gem_destroy(struct drm_device
*dev
);
1552 void drm_gem_object_release(struct drm_gem_object
*obj
);
1553 void drm_gem_object_free(struct kref
*kref
);
1554 struct drm_gem_object
*drm_gem_object_alloc(struct drm_device
*dev
,
1556 int drm_gem_object_init(struct drm_device
*dev
,
1557 struct drm_gem_object
*obj
, size_t size
);
1558 void drm_gem_private_object_init(struct drm_device
*dev
,
1559 struct drm_gem_object
*obj
, size_t size
);
1560 void drm_gem_object_handle_free(struct drm_gem_object
*obj
);
1561 void drm_gem_vm_open(struct vm_area_struct
*vma
);
1562 void drm_gem_vm_close(struct vm_area_struct
*vma
);
1563 int drm_gem_mmap_obj(struct drm_gem_object
*obj
, unsigned long obj_size
,
1564 struct vm_area_struct
*vma
);
1565 int drm_gem_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1567 #include <drm/drm_global.h>
1570 drm_gem_object_reference(struct drm_gem_object
*obj
)
1572 kref_get(&obj
->refcount
);
1576 drm_gem_object_unreference(struct drm_gem_object
*obj
)
1579 kref_put(&obj
->refcount
, drm_gem_object_free
);
1583 drm_gem_object_unreference_unlocked(struct drm_gem_object
*obj
)
1585 if (obj
&& !atomic_add_unless(&obj
->refcount
.refcount
, -1, 1)) {
1586 struct drm_device
*dev
= obj
->dev
;
1588 mutex_lock(&dev
->struct_mutex
);
1589 if (likely(atomic_dec_and_test(&obj
->refcount
.refcount
)))
1590 drm_gem_object_free(&obj
->refcount
);
1591 mutex_unlock(&dev
->struct_mutex
);
1595 int drm_gem_handle_create(struct drm_file
*file_priv
,
1596 struct drm_gem_object
*obj
,
1598 int drm_gem_handle_delete(struct drm_file
*filp
, u32 handle
);
1601 drm_gem_object_handle_reference(struct drm_gem_object
*obj
)
1603 drm_gem_object_reference(obj
);
1604 atomic_inc(&obj
->handle_count
);
1608 drm_gem_object_handle_unreference_unlocked(struct drm_gem_object
*obj
)
1613 if (atomic_read(&obj
->handle_count
) == 0)
1617 * Must bump handle count first as this may be the last
1618 * ref, in which case the object would disappear before we
1619 * checked for a name
1622 if (atomic_dec_and_test(&obj
->handle_count
))
1623 drm_gem_object_handle_free(obj
);
1624 drm_gem_object_unreference_unlocked(obj
);
1627 void drm_gem_free_mmap_offset(struct drm_gem_object
*obj
);
1628 int drm_gem_create_mmap_offset(struct drm_gem_object
*obj
);
1630 struct drm_gem_object
*drm_gem_object_lookup(struct drm_device
*dev
,
1631 struct drm_file
*filp
,
1633 int drm_gem_close_ioctl(struct drm_device
*dev
, void *data
,
1634 struct drm_file
*file_priv
);
1635 int drm_gem_flink_ioctl(struct drm_device
*dev
, void *data
,
1636 struct drm_file
*file_priv
);
1637 int drm_gem_open_ioctl(struct drm_device
*dev
, void *data
,
1638 struct drm_file
*file_priv
);
1639 void drm_gem_open(struct drm_device
*dev
, struct drm_file
*file_private
);
1640 void drm_gem_release(struct drm_device
*dev
, struct drm_file
*file_private
);
1642 extern void drm_core_ioremap(struct drm_local_map
*map
, struct drm_device
*dev
);
1643 extern void drm_core_ioremap_wc(struct drm_local_map
*map
, struct drm_device
*dev
);
1644 extern void drm_core_ioremapfree(struct drm_local_map
*map
, struct drm_device
*dev
);
1646 static __inline__
struct drm_local_map
*drm_core_findmap(struct drm_device
*dev
,
1649 struct drm_map_list
*_entry
;
1650 list_for_each_entry(_entry
, &dev
->maplist
, head
)
1651 if (_entry
->user_token
== token
)
1656 static __inline__
void drm_core_dropmap(struct drm_local_map
*map
)
1660 #include <drm/drm_mem_util.h>
1662 extern int drm_fill_in_dev(struct drm_device
*dev
,
1663 const struct pci_device_id
*ent
,
1664 struct drm_driver
*driver
);
1665 int drm_get_minor(struct drm_device
*dev
, struct drm_minor
**minor
, int type
);
1669 static __inline__
int drm_pci_device_is_agp(struct drm_device
*dev
)
1671 if (dev
->driver
->device_is_agp
!= NULL
) {
1672 int err
= (*dev
->driver
->device_is_agp
) (dev
);
1679 return pci_find_capability(dev
->pdev
, PCI_CAP_ID_AGP
);
1682 extern int drm_pci_init(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1683 extern void drm_pci_exit(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1684 extern int drm_get_pci_dev(struct pci_dev
*pdev
,
1685 const struct pci_device_id
*ent
,
1686 struct drm_driver
*driver
);
1688 #define DRM_PCIE_SPEED_25 1
1689 #define DRM_PCIE_SPEED_50 2
1690 #define DRM_PCIE_SPEED_80 4
1692 extern int drm_pcie_get_speed_cap_mask(struct drm_device
*dev
, u32
*speed_mask
);
1694 /* platform section */
1695 extern int drm_platform_init(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1696 extern void drm_platform_exit(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1698 extern int drm_get_platform_dev(struct platform_device
*pdev
,
1699 struct drm_driver
*driver
);
1701 /* returns true if currently okay to sleep */
1702 static __inline__
bool drm_can_sleep(void)
1704 if (in_atomic() || in_dbg_master() || irqs_disabled())
1709 #endif /* __KERNEL__ */