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_FB_DMA 0x400
151 #define DRIVER_IRQ_VBL2 0x800
152 #define DRIVER_GEM 0x1000
153 #define DRIVER_MODESET 0x2000
154 #define DRIVER_PRIME 0x4000
156 #define DRIVER_BUS_PCI 0x1
157 #define DRIVER_BUS_PLATFORM 0x2
158 #define DRIVER_BUS_USB 0x3
160 /***********************************************************************/
161 /** \name Begin the DRM... */
164 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
165 also include looping detection. */
167 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
168 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
169 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
170 #define DRM_LOOPING_LIMIT 5000000
171 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
172 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
174 #define DRM_FLAG_DEBUG 0x01
176 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
177 #define DRM_MAP_HASH_OFFSET 0x10000000
181 /***********************************************************************/
182 /** \name Macros to make printk easier */
188 * \param fmt printf() like format string.
189 * \param arg arguments
191 #define DRM_ERROR(fmt, ...) \
192 drm_err(__func__, fmt, ##__VA_ARGS__)
194 #define DRM_INFO(fmt, ...) \
195 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
200 * \param fmt printf() like format string.
201 * \param arg arguments
204 #define DRM_DEBUG(fmt, args...) \
206 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
207 __func__, fmt, ##args); \
210 #define DRM_DEBUG_DRIVER(fmt, args...) \
212 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
213 __func__, fmt, ##args); \
215 #define DRM_DEBUG_KMS(fmt, args...) \
217 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
218 __func__, fmt, ##args); \
220 #define DRM_DEBUG_PRIME(fmt, args...) \
222 drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME, \
223 __func__, fmt, ##args); \
225 #define DRM_LOG(fmt, args...) \
227 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
228 NULL, fmt, ##args); \
230 #define DRM_LOG_KMS(fmt, args...) \
232 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
233 NULL, fmt, ##args); \
235 #define DRM_LOG_MODE(fmt, args...) \
237 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
238 NULL, fmt, ##args); \
240 #define DRM_LOG_DRIVER(fmt, args...) \
242 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
243 NULL, fmt, ##args); \
246 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
247 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
248 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
249 #define DRM_DEBUG(fmt, arg...) do { } while (0)
250 #define DRM_LOG(fmt, arg...) do { } while (0)
251 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
252 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
253 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
259 /***********************************************************************/
260 /** \name Internal types and structures */
263 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
265 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
266 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
268 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
271 * Test that the hardware lock is held by the caller, returning otherwise.
273 * \param dev DRM device.
274 * \param filp file pointer of the caller.
276 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
278 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
279 _file_priv->master->lock.file_priv != _file_priv) { \
280 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
281 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
282 _file_priv->master->lock.file_priv, _file_priv); \
288 * Ioctl function type.
290 * \param inode device inode.
291 * \param file_priv DRM file private pointer.
292 * \param cmd command.
293 * \param arg argument.
295 typedef int drm_ioctl_t(struct drm_device
*dev
, void *data
,
296 struct drm_file
*file_priv
);
298 typedef int drm_ioctl_compat_t(struct file
*filp
, unsigned int cmd
,
301 #define DRM_IOCTL_NR(n) _IOC_NR(n)
302 #define DRM_MAJOR 226
305 #define DRM_MASTER 0x2
306 #define DRM_ROOT_ONLY 0x4
307 #define DRM_CONTROL_ALLOW 0x8
308 #define DRM_UNLOCKED 0x10
310 struct drm_ioctl_desc
{
314 unsigned int cmd_drv
;
319 * Creates a driver or general drm_ioctl_desc array entry for the given
320 * ioctl, for use by drm_ioctl().
323 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
324 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
326 struct drm_magic_entry
{
327 struct list_head head
;
328 struct drm_hash_item hash_item
;
329 struct drm_file
*priv
;
332 struct drm_vma_entry
{
333 struct list_head head
;
334 struct vm_area_struct
*vma
;
342 int idx
; /**< Index into master buflist */
343 int total
; /**< Buffer size */
344 int order
; /**< log-base-2(total) */
345 int used
; /**< Amount of buffer in use (for DMA) */
346 unsigned long offset
; /**< Byte offset (used internally) */
347 void *address
; /**< Address of buffer */
348 unsigned long bus_address
; /**< Bus address of buffer */
349 struct drm_buf
*next
; /**< Kernel-only: used for free list */
350 __volatile__
int waiting
; /**< On kernel DMA queue */
351 __volatile__
int pending
; /**< On hardware DMA queue */
352 struct drm_file
*file_priv
; /**< Private of holding file descr */
353 int context
; /**< Kernel queue for this buffer */
354 int while_locked
; /**< Dispatch this buffer while locked */
362 } list
; /**< Which list we're on */
364 int dev_priv_size
; /**< Size of buffer private storage */
365 void *dev_private
; /**< Per-buffer private storage */
368 /** bufs is one longer than it has to be */
369 struct drm_waitlist
{
370 int count
; /**< Number of possible buffers */
371 struct drm_buf
**bufs
; /**< List of pointers to buffers */
372 struct drm_buf
**rp
; /**< Read pointer */
373 struct drm_buf
**wp
; /**< Write pointer */
374 struct drm_buf
**end
; /**< End pointer */
375 spinlock_t read_lock
;
376 spinlock_t write_lock
;
379 struct drm_freelist
{
380 int initialized
; /**< Freelist in use */
381 atomic_t count
; /**< Number of free buffers */
382 struct drm_buf
*next
; /**< End pointer */
384 wait_queue_head_t waiting
; /**< Processes waiting on free bufs */
385 int low_mark
; /**< Low water mark */
386 int high_mark
; /**< High water mark */
387 atomic_t wfh
; /**< If waiting for high mark */
391 typedef struct drm_dma_handle
{
398 * Buffer entry. There is one of this for each buffer size order.
400 struct drm_buf_entry
{
401 int buf_size
; /**< size */
402 int buf_count
; /**< number of buffers */
403 struct drm_buf
*buflist
; /**< buffer list */
406 struct drm_dma_handle
**seglist
;
408 struct drm_freelist freelist
;
411 /* Event queued up for userspace to read */
412 struct drm_pending_event
{
413 struct drm_event
*event
;
414 struct list_head link
;
415 struct drm_file
*file_priv
;
416 pid_t pid
; /* pid of requester, no guarantee it's valid by the time
417 we deliver the event, for tracing only */
418 void (*destroy
)(struct drm_pending_event
*event
);
421 /* initial implementaton using a linked list - todo hashtab */
422 struct drm_prime_file_private
{
423 struct list_head head
;
427 /** File private data */
433 unsigned long ioctl_count
;
434 struct list_head lhead
;
435 struct drm_minor
*minor
;
436 unsigned long lock_count
;
438 /** Mapping of mm object handles to object pointers. */
439 struct idr object_idr
;
440 /** Lock for synchronization of access to object_idr. */
441 spinlock_t table_lock
;
446 int is_master
; /* this file private is a master for a minor */
447 struct drm_master
*master
; /* master this node is currently associated with
448 N.B. not always minor->master */
451 * fbs - List of framebuffers associated with this file.
453 * Protected by fbs_lock. Note that the fbs list holds a reference on
454 * the fb object to prevent it from untimely disappearing.
456 struct list_head fbs
;
457 struct mutex fbs_lock
;
459 wait_queue_head_t event_wait
;
460 struct list_head event_list
;
463 struct drm_prime_file_private prime
;
468 atomic_t use_count
; /**< Outstanding uses (+1) */
469 atomic_t finalization
; /**< Finalization in progress */
470 atomic_t block_count
; /**< Count of processes waiting */
471 atomic_t block_read
; /**< Queue blocked for reads */
472 wait_queue_head_t read_queue
; /**< Processes waiting on block_read */
473 atomic_t block_write
; /**< Queue blocked for writes */
474 wait_queue_head_t write_queue
; /**< Processes waiting on block_write */
475 atomic_t total_queued
; /**< Total queued statistic */
476 atomic_t total_flushed
; /**< Total flushes statistic */
477 atomic_t total_locks
; /**< Total locks statistics */
478 enum drm_ctx_flags flags
; /**< Context preserving and 2D-only */
479 struct drm_waitlist waitlist
; /**< Pending buffers */
480 wait_queue_head_t flush_queue
; /**< Processes waiting until flush */
486 struct drm_lock_data
{
487 struct drm_hw_lock
*hw_lock
; /**< Hardware lock */
488 /** Private of lock holder's file (NULL=kernel) */
489 struct drm_file
*file_priv
;
490 wait_queue_head_t lock_queue
; /**< Queue of blocked processes */
491 unsigned long lock_time
; /**< Time of last lock in jiffies */
493 uint32_t kernel_waiters
;
494 uint32_t user_waiters
;
501 struct drm_device_dma
{
503 struct drm_buf_entry bufs
[DRM_MAX_ORDER
+ 1]; /**< buffers, grouped by their size order */
504 int buf_count
; /**< total number of buffers */
505 struct drm_buf
**buflist
; /**< Vector of pointers into drm_device_dma::bufs */
507 int page_count
; /**< number of pages */
508 unsigned long *pagelist
; /**< page list */
509 unsigned long byte_count
;
511 _DRM_DMA_USE_AGP
= 0x01,
512 _DRM_DMA_USE_SG
= 0x02,
513 _DRM_DMA_USE_FB
= 0x04,
514 _DRM_DMA_USE_PCI_RO
= 0x08
520 * AGP memory entry. Stored as a doubly linked list.
523 unsigned long handle
; /**< handle */
525 unsigned long bound
; /**< address */
527 struct list_head head
;
533 * \sa drm_agp_init() and drm_device::agp.
535 struct drm_agp_head
{
536 DRM_AGP_KERN agp_info
; /**< AGP device information */
537 struct list_head memory
;
538 unsigned long mode
; /**< AGP mode */
539 struct agp_bridge_data
*bridge
;
540 int enabled
; /**< whether the AGP bus as been enabled */
541 int acquired
; /**< whether the AGP device has been acquired */
544 int cant_use_aperture
;
545 unsigned long page_mask
;
549 * Scatter-gather memory.
552 unsigned long handle
;
555 struct page
**pagelist
;
561 struct drm_hw_lock
*lock
;
566 * Kernel side of a mapping
568 struct drm_local_map
{
569 resource_size_t offset
; /**< Requested physical address (0 for SAREA)*/
570 unsigned long size
; /**< Requested physical size (bytes) */
571 enum drm_map_type type
; /**< Type of memory to map */
572 enum drm_map_flags flags
; /**< Flags */
573 void *handle
; /**< User-space: "Handle" to pass to mmap() */
574 /**< Kernel-space: kernel-virtual address */
575 int mtrr
; /**< MTRR slot used */
578 typedef struct drm_local_map drm_local_map_t
;
583 struct drm_map_list
{
584 struct list_head head
; /**< list head */
585 struct drm_hash_item hash
;
586 struct drm_local_map
*map
; /**< mapping */
588 struct drm_master
*master
;
592 * Context handle list
594 struct drm_ctx_list
{
595 struct list_head head
; /**< list head */
596 drm_context_t handle
; /**< context handle */
597 struct drm_file
*tag
; /**< associated fd private data */
600 /* location of GART table */
601 #define DRM_ATI_GART_MAIN 1
602 #define DRM_ATI_GART_FB 2
604 #define DRM_ATI_GART_PCI 1
605 #define DRM_ATI_GART_PCIE 2
606 #define DRM_ATI_GART_IGP 3
608 struct drm_ati_pcigart_info
{
609 int gart_table_location
;
613 dma_addr_t table_mask
;
614 struct drm_dma_handle
*table_handle
;
615 struct drm_local_map mapping
;
620 * GEM specific mm private for tracking GEM objects
623 struct drm_vma_offset_manager vma_manager
;
627 * This structure defines the drm_mm memory object, which will be used by the
628 * DRM for its buffer objects.
630 struct drm_gem_object
{
631 /** Reference count of this object */
632 struct kref refcount
;
634 /** Handle count of this object. Each handle also holds a reference */
635 atomic_t handle_count
; /* number of handles on this object */
637 /** Related drm device */
638 struct drm_device
*dev
;
640 /** File representing the shmem storage */
643 /* Mapping info for this object */
644 struct drm_vma_offset_node vma_node
;
647 * Size of the object, in bytes. Immutable over the object's
653 * Global name for this object, starts at 1. 0 means unnamed.
654 * Access is covered by the object_name_lock in the related drm_device
659 * Memory domains. These monitor which caches contain read/write data
660 * related to the object. When transitioning from one set of domains
661 * to another, the driver is called to ensure that caches are suitably
662 * flushed and invalidated
664 uint32_t read_domains
;
665 uint32_t write_domain
;
668 * While validating an exec operation, the
669 * new read/write domain values are computed here.
670 * They will be transferred to the above values
671 * at the point that any cache flushing occurs
673 uint32_t pending_read_domains
;
674 uint32_t pending_write_domain
;
676 void *driver_private
;
678 /* dma buf exported from this GEM object */
679 struct dma_buf
*export_dma_buf
;
681 /* dma buf attachment backing this object */
682 struct dma_buf_attachment
*import_attach
;
685 #include <drm/drm_crtc.h>
687 /* per-master structure */
690 struct kref refcount
; /* refcount for this master */
692 struct list_head head
; /**< each minor contains a list of masters */
693 struct drm_minor
*minor
; /**< link back to minor we are a master for */
695 char *unique
; /**< Unique identifier: e.g., busid */
696 int unique_len
; /**< Length of unique field */
697 int unique_size
; /**< amount allocated */
699 int blocked
; /**< Blocked due to VC switch? */
701 /** \name Authentication */
703 struct drm_open_hash magiclist
;
704 struct list_head magicfree
;
707 struct drm_lock_data lock
; /**< Information on hardware lock */
709 void *driver_priv
; /**< Private structure for driver to use */
712 /* Size of ringbuffer for vblank timestamps. Just double-buffer
713 * in initial implementation.
715 #define DRM_VBLANKTIME_RBSIZE 2
717 /* Flags and return codes for get_vblank_timestamp() driver function. */
718 #define DRM_CALLED_FROM_VBLIRQ 1
719 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
720 #define DRM_VBLANKTIME_INVBL (1 << 1)
722 /* get_scanout_position() return flags */
723 #define DRM_SCANOUTPOS_VALID (1 << 0)
724 #define DRM_SCANOUTPOS_INVBL (1 << 1)
725 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
729 int (*get_irq
)(struct drm_device
*dev
);
730 const char *(*get_name
)(struct drm_device
*dev
);
731 int (*set_busid
)(struct drm_device
*dev
, struct drm_master
*master
);
732 int (*set_unique
)(struct drm_device
*dev
, struct drm_master
*master
,
733 struct drm_unique
*unique
);
734 int (*irq_by_busid
)(struct drm_device
*dev
, struct drm_irq_busid
*p
);
735 /* hooks that are for PCI */
736 int (*agp_init
)(struct drm_device
*dev
);
737 void (*agp_destroy
)(struct drm_device
*dev
);
742 * DRM driver structure. This structure represent the common code for
743 * a family of cards. There will one drm_device for each card present
747 int (*load
) (struct drm_device
*, unsigned long flags
);
748 int (*firstopen
) (struct drm_device
*);
749 int (*open
) (struct drm_device
*, struct drm_file
*);
750 void (*preclose
) (struct drm_device
*, struct drm_file
*file_priv
);
751 void (*postclose
) (struct drm_device
*, struct drm_file
*);
752 void (*lastclose
) (struct drm_device
*);
753 int (*unload
) (struct drm_device
*);
754 int (*suspend
) (struct drm_device
*, pm_message_t state
);
755 int (*resume
) (struct drm_device
*);
756 int (*dma_ioctl
) (struct drm_device
*dev
, void *data
, struct drm_file
*file_priv
);
757 int (*dma_quiescent
) (struct drm_device
*);
758 int (*context_dtor
) (struct drm_device
*dev
, int context
);
761 * get_vblank_counter - get raw hardware vblank counter
763 * @crtc: counter to fetch
765 * Driver callback for fetching a raw hardware vblank counter for @crtc.
766 * If a device doesn't have a hardware counter, the driver can simply
767 * return the value of drm_vblank_count. The DRM core will account for
768 * missed vblank events while interrupts where disabled based on system
771 * Wraparound handling and loss of events due to modesetting is dealt
772 * with in the DRM core code.
775 * Raw vblank counter value.
777 u32 (*get_vblank_counter
) (struct drm_device
*dev
, int crtc
);
780 * enable_vblank - enable vblank interrupt events
782 * @crtc: which irq to enable
784 * Enable vblank interrupts for @crtc. If the device doesn't have
785 * a hardware vblank counter, this routine should be a no-op, since
786 * interrupts will have to stay on to keep the count accurate.
789 * Zero on success, appropriate errno if the given @crtc's vblank
790 * interrupt cannot be enabled.
792 int (*enable_vblank
) (struct drm_device
*dev
, int crtc
);
795 * disable_vblank - disable vblank interrupt events
797 * @crtc: which irq to enable
799 * Disable vblank interrupts for @crtc. If the device doesn't have
800 * a hardware vblank counter, this routine should be a no-op, since
801 * interrupts will have to stay on to keep the count accurate.
803 void (*disable_vblank
) (struct drm_device
*dev
, int crtc
);
806 * Called by \c drm_device_is_agp. Typically used to determine if a
807 * card is really attached to AGP or not.
809 * \param dev DRM device handle
812 * One of three values is returned depending on whether or not the
813 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
814 * (return of 1), or may or may not be AGP (return of 2).
816 int (*device_is_agp
) (struct drm_device
*dev
);
819 * Called by vblank timestamping code.
821 * Return the current display scanout position from a crtc.
823 * \param dev DRM device.
824 * \param crtc Id of the crtc to query.
825 * \param *vpos Target location for current vertical scanout position.
826 * \param *hpos Target location for current horizontal scanout position.
828 * Returns vpos as a positive number while in active scanout area.
829 * Returns vpos as a negative number inside vblank, counting the number
830 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
831 * until start of active scanout / end of vblank."
833 * \return Flags, or'ed together as follows:
835 * DRM_SCANOUTPOS_VALID = Query successful.
836 * DRM_SCANOUTPOS_INVBL = Inside vblank.
837 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
838 * this flag means that returned position may be offset by a constant
839 * but unknown small number of scanlines wrt. real scanout position.
842 int (*get_scanout_position
) (struct drm_device
*dev
, int crtc
,
843 int *vpos
, int *hpos
);
846 * Called by \c drm_get_last_vbltimestamp. Should return a precise
847 * timestamp when the most recent VBLANK interval ended or will end.
849 * Specifically, the timestamp in @vblank_time should correspond as
850 * closely as possible to the time when the first video scanline of
851 * the video frame after the end of VBLANK will start scanning out,
852 * the time immediately after end of the VBLANK interval. If the
853 * @crtc is currently inside VBLANK, this will be a time in the future.
854 * If the @crtc is currently scanning out a frame, this will be the
855 * past start time of the current scanout. This is meant to adhere
856 * to the OpenML OML_sync_control extension specification.
858 * \param dev dev DRM device handle.
859 * \param crtc crtc for which timestamp should be returned.
860 * \param *max_error Maximum allowable timestamp error in nanoseconds.
861 * Implementation should strive to provide timestamp
862 * with an error of at most *max_error nanoseconds.
863 * Returns true upper bound on error for timestamp.
864 * \param *vblank_time Target location for returned vblank timestamp.
865 * \param flags 0 = Defaults, no special treatment needed.
866 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
867 * irq handler. Some drivers need to apply some workarounds
868 * for gpu-specific vblank irq quirks if flag is set.
871 * Zero if timestamping isn't supported in current display mode or a
872 * negative number on failure. A positive status code on success,
873 * which describes how the vblank_time timestamp was computed.
875 int (*get_vblank_timestamp
) (struct drm_device
*dev
, int crtc
,
877 struct timeval
*vblank_time
,
880 /* these have to be filled in */
882 irqreturn_t(*irq_handler
) (DRM_IRQ_ARGS
);
883 void (*irq_preinstall
) (struct drm_device
*dev
);
884 int (*irq_postinstall
) (struct drm_device
*dev
);
885 void (*irq_uninstall
) (struct drm_device
*dev
);
886 void (*set_version
) (struct drm_device
*dev
,
887 struct drm_set_version
*sv
);
889 /* Master routines */
890 int (*master_create
)(struct drm_device
*dev
, struct drm_master
*master
);
891 void (*master_destroy
)(struct drm_device
*dev
, struct drm_master
*master
);
893 * master_set is called whenever the minor master is set.
894 * master_drop is called whenever the minor master is dropped.
897 int (*master_set
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
899 void (*master_drop
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
902 int (*debugfs_init
)(struct drm_minor
*minor
);
903 void (*debugfs_cleanup
)(struct drm_minor
*minor
);
906 * Driver-specific constructor for drm_gem_objects, to set up
907 * obj->driver_private.
909 * Returns 0 on success.
911 int (*gem_init_object
) (struct drm_gem_object
*obj
);
912 void (*gem_free_object
) (struct drm_gem_object
*obj
);
913 int (*gem_open_object
) (struct drm_gem_object
*, struct drm_file
*);
914 void (*gem_close_object
) (struct drm_gem_object
*, struct drm_file
*);
917 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
918 int (*prime_handle_to_fd
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
919 uint32_t handle
, uint32_t flags
, int *prime_fd
);
920 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
921 int (*prime_fd_to_handle
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
922 int prime_fd
, uint32_t *handle
);
923 /* export GEM -> dmabuf */
924 struct dma_buf
* (*gem_prime_export
)(struct drm_device
*dev
,
925 struct drm_gem_object
*obj
, int flags
);
926 /* import dmabuf -> GEM */
927 struct drm_gem_object
* (*gem_prime_import
)(struct drm_device
*dev
,
928 struct dma_buf
*dma_buf
);
929 /* low-level interface used by drm_gem_prime_{import,export} */
930 int (*gem_prime_pin
)(struct drm_gem_object
*obj
);
931 void (*gem_prime_unpin
)(struct drm_gem_object
*obj
);
932 struct sg_table
*(*gem_prime_get_sg_table
)(struct drm_gem_object
*obj
);
933 struct drm_gem_object
*(*gem_prime_import_sg_table
)(
934 struct drm_device
*dev
, size_t size
,
935 struct sg_table
*sgt
);
936 void *(*gem_prime_vmap
)(struct drm_gem_object
*obj
);
937 void (*gem_prime_vunmap
)(struct drm_gem_object
*obj
, void *vaddr
);
938 int (*gem_prime_mmap
)(struct drm_gem_object
*obj
,
939 struct vm_area_struct
*vma
);
941 /* vga arb irq handler */
942 void (*vgaarb_irq
)(struct drm_device
*dev
, bool state
);
944 /* dumb alloc support */
945 int (*dumb_create
)(struct drm_file
*file_priv
,
946 struct drm_device
*dev
,
947 struct drm_mode_create_dumb
*args
);
948 int (*dumb_map_offset
)(struct drm_file
*file_priv
,
949 struct drm_device
*dev
, uint32_t handle
,
951 int (*dumb_destroy
)(struct drm_file
*file_priv
,
952 struct drm_device
*dev
,
955 /* Driver private ops for this object */
956 const struct vm_operations_struct
*gem_vm_ops
;
967 const struct drm_ioctl_desc
*ioctls
;
969 const struct file_operations
*fops
;
971 struct pci_driver
*pci
;
972 struct platform_device
*platform_device
;
973 struct usb_driver
*usb
;
977 /* List of devices hanging off this driver */
978 struct list_head device_list
;
981 #define DRM_MINOR_UNASSIGNED 0
982 #define DRM_MINOR_LEGACY 1
983 #define DRM_MINOR_CONTROL 2
984 #define DRM_MINOR_RENDER 3
988 * debugfs node list. This structure represents a debugfs file to
989 * be created by the drm core
991 struct drm_debugfs_list
{
992 const char *name
; /** file name */
993 int (*show
)(struct seq_file
*, void*); /** show callback */
994 u32 driver_features
; /**< Required driver features for this entry */
998 * debugfs node structure. This structure represents a debugfs file.
1000 struct drm_debugfs_node
{
1001 struct list_head list
;
1002 struct drm_minor
*minor
;
1003 struct drm_debugfs_list
*debugfs_ent
;
1004 struct dentry
*dent
;
1008 * Info file list entry. This structure represents a debugfs or proc file to
1009 * be created by the drm core
1011 struct drm_info_list
{
1012 const char *name
; /** file name */
1013 int (*show
)(struct seq_file
*, void*); /** show callback */
1014 u32 driver_features
; /**< Required driver features for this entry */
1019 * debugfs node structure. This structure represents a debugfs file.
1021 struct drm_info_node
{
1022 struct list_head list
;
1023 struct drm_minor
*minor
;
1024 const struct drm_info_list
*info_ent
;
1025 struct dentry
*dent
;
1029 * DRM minor structure. This structure represents a drm minor number.
1032 int index
; /**< Minor device number */
1033 int type
; /**< Control or render */
1034 dev_t device
; /**< Device number for mknod */
1035 struct device kdev
; /**< Linux device */
1036 struct drm_device
*dev
;
1038 struct proc_dir_entry
*proc_root
; /**< proc directory entry */
1039 struct drm_info_node proc_nodes
;
1040 struct dentry
*debugfs_root
;
1042 struct list_head debugfs_list
;
1043 struct mutex debugfs_lock
; /* Protects debugfs_list. */
1045 struct drm_master
*master
; /* currently active master for this node */
1046 struct list_head master_list
;
1047 struct drm_mode_group mode_group
;
1050 /* mode specified on the command line */
1051 struct drm_cmdline_mode
{
1053 bool refresh_specified
;
1062 enum drm_connector_force force
;
1066 struct drm_pending_vblank_event
{
1067 struct drm_pending_event base
;
1069 struct drm_event_vblank event
;
1073 * DRM device structure. This structure represent a complete card that
1074 * may contain multiple heads.
1077 struct list_head driver_item
; /**< list of devices per driver */
1078 char *devname
; /**< For /proc/interrupts */
1079 int if_version
; /**< Highest interface version set */
1083 spinlock_t count_lock
; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1084 struct mutex struct_mutex
; /**< For others */
1087 /** \name Usage Counters */
1089 int open_count
; /**< Outstanding files open */
1090 atomic_t ioctl_count
; /**< Outstanding IOCTLs pending */
1091 atomic_t vma_count
; /**< Outstanding vma areas open */
1092 int buf_use
; /**< Buffers in use -- cannot alloc */
1093 atomic_t buf_alloc
; /**< Buffer allocation in progress */
1096 /** \name Performance counters */
1098 unsigned long counters
;
1099 enum drm_stat_type types
[15];
1100 atomic_t counts
[15];
1103 struct list_head filelist
;
1105 /** \name Memory management */
1107 struct list_head maplist
; /**< Linked list of regions */
1108 int map_count
; /**< Number of mappable regions */
1109 struct drm_open_hash map_hash
; /**< User token hash table for maps */
1111 /** \name Context handle management */
1113 struct list_head ctxlist
; /**< Linked list of context handles */
1114 int ctx_count
; /**< Number of context handles */
1115 struct mutex ctxlist_mutex
; /**< For ctxlist */
1119 struct list_head vmalist
; /**< List of vmas (for debugging) */
1123 /** \name DMA support */
1125 struct drm_device_dma
*dma
; /**< Optional pointer for DMA support */
1128 /** \name Context support */
1130 int irq_enabled
; /**< True if irq handler is enabled */
1131 __volatile__
long context_flag
; /**< Context swapping flag */
1132 int last_context
; /**< Last current context */
1135 struct work_struct work
;
1136 /** \name VBLANK IRQ support */
1140 * At load time, disabling the vblank interrupt won't be allowed since
1141 * old clients may not call the modeset ioctl and therefore misbehave.
1142 * Once the modeset ioctl *has* been called though, we can safely
1143 * disable them when unused.
1145 int vblank_disable_allowed
;
1147 wait_queue_head_t
*vbl_queue
; /**< VBLANK wait queue */
1148 atomic_t
*_vblank_count
; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1149 struct timeval
*_vblank_time
; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1150 spinlock_t vblank_time_lock
; /**< Protects vblank count and time updates during vblank enable/disable */
1151 spinlock_t vbl_lock
;
1152 atomic_t
*vblank_refcount
; /* number of users of vblank interruptsper crtc */
1153 u32
*last_vblank
; /* protected by dev->vbl_lock, used */
1154 /* for wraparound handling */
1155 int *vblank_enabled
; /* so we don't call enable more than
1157 int *vblank_inmodeset
; /* Display driver is setting mode */
1158 u32
*last_vblank_wait
; /* Last vblank seqno waited per CRTC */
1159 struct timer_list vblank_disable_timer
;
1161 u32 max_vblank_count
; /**< size of vblank counter register */
1166 struct list_head vblank_event_list
;
1167 spinlock_t event_lock
;
1171 struct fasync_struct
*buf_async
;/**< Processes waiting for SIGIO */
1173 struct drm_agp_head
*agp
; /**< AGP data */
1175 struct device
*dev
; /**< Device structure */
1176 struct pci_dev
*pdev
; /**< PCI device structure */
1177 int pci_vendor
; /**< PCI vendor id */
1178 int pci_device
; /**< PCI device id */
1180 struct pci_controller
*hose
;
1183 struct platform_device
*platformdev
; /**< Platform device struture */
1184 struct usb_device
*usbdev
;
1186 struct drm_sg_mem
*sg
; /**< Scatter gather memory */
1187 unsigned int num_crtcs
; /**< Number of CRTCs on this device */
1188 void *dev_private
; /**< device private data */
1190 struct address_space
*dev_mapping
;
1191 struct drm_sigdata sigdata
; /**< For block_all_signals */
1194 struct drm_driver
*driver
;
1195 struct drm_local_map
*agp_buffer_map
;
1196 unsigned int agp_buffer_token
;
1197 struct drm_minor
*control
; /**< Control node for card */
1198 struct drm_minor
*primary
; /**< render type primary screen head */
1200 struct drm_mode_config mode_config
; /**< Current mode config */
1202 /** \name GEM information */
1204 spinlock_t object_name_lock
;
1205 struct idr object_name_idr
;
1207 int switch_power_state
;
1209 atomic_t unplugged
; /* device has been unplugged or gone away */
1212 #define DRM_SWITCH_POWER_ON 0
1213 #define DRM_SWITCH_POWER_OFF 1
1214 #define DRM_SWITCH_POWER_CHANGING 2
1216 static __inline__
int drm_core_check_feature(struct drm_device
*dev
,
1219 return ((dev
->driver
->driver_features
& feature
) ? 1 : 0);
1222 static inline int drm_dev_to_irq(struct drm_device
*dev
)
1224 return dev
->driver
->bus
->get_irq(dev
);
1228 static inline int drm_core_has_MTRR(struct drm_device
*dev
)
1230 return drm_core_check_feature(dev
, DRIVER_USE_MTRR
);
1233 #define drm_core_has_MTRR(dev) (0)
1236 static inline void drm_device_set_unplugged(struct drm_device
*dev
)
1239 atomic_set(&dev
->unplugged
, 1);
1242 static inline int drm_device_is_unplugged(struct drm_device
*dev
)
1244 int ret
= atomic_read(&dev
->unplugged
);
1249 static inline bool drm_modeset_is_locked(struct drm_device
*dev
)
1251 return mutex_is_locked(&dev
->mode_config
.mutex
);
1254 /******************************************************************/
1255 /** \name Internal function definitions */
1258 /* Driver support (drm_drv.h) */
1259 extern long drm_ioctl(struct file
*filp
,
1260 unsigned int cmd
, unsigned long arg
);
1261 extern long drm_compat_ioctl(struct file
*filp
,
1262 unsigned int cmd
, unsigned long arg
);
1263 extern int drm_lastclose(struct drm_device
*dev
);
1265 /* Device support (drm_fops.h) */
1266 extern struct mutex drm_global_mutex
;
1267 extern int drm_open(struct inode
*inode
, struct file
*filp
);
1268 extern int drm_stub_open(struct inode
*inode
, struct file
*filp
);
1269 extern int drm_fasync(int fd
, struct file
*filp
, int on
);
1270 extern ssize_t
drm_read(struct file
*filp
, char __user
*buffer
,
1271 size_t count
, loff_t
*offset
);
1272 extern int drm_release(struct inode
*inode
, struct file
*filp
);
1274 /* Mapping support (drm_vm.h) */
1275 extern int drm_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1276 extern int drm_mmap_locked(struct file
*filp
, struct vm_area_struct
*vma
);
1277 extern void drm_vm_open_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1278 extern void drm_vm_close_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1279 extern unsigned int drm_poll(struct file
*filp
, struct poll_table_struct
*wait
);
1281 /* Memory management support (drm_memory.h) */
1282 #include <drm/drm_memory.h>
1284 /* Misc. IOCTL support (drm_ioctl.h) */
1285 extern int drm_irq_by_busid(struct drm_device
*dev
, void *data
,
1286 struct drm_file
*file_priv
);
1287 extern int drm_getunique(struct drm_device
*dev
, void *data
,
1288 struct drm_file
*file_priv
);
1289 extern int drm_setunique(struct drm_device
*dev
, void *data
,
1290 struct drm_file
*file_priv
);
1291 extern int drm_getmap(struct drm_device
*dev
, void *data
,
1292 struct drm_file
*file_priv
);
1293 extern int drm_getclient(struct drm_device
*dev
, void *data
,
1294 struct drm_file
*file_priv
);
1295 extern int drm_getstats(struct drm_device
*dev
, void *data
,
1296 struct drm_file
*file_priv
);
1297 extern int drm_getcap(struct drm_device
*dev
, void *data
,
1298 struct drm_file
*file_priv
);
1299 extern int drm_setversion(struct drm_device
*dev
, void *data
,
1300 struct drm_file
*file_priv
);
1301 extern int drm_noop(struct drm_device
*dev
, void *data
,
1302 struct drm_file
*file_priv
);
1304 /* Context IOCTL support (drm_context.h) */
1305 extern int drm_resctx(struct drm_device
*dev
, void *data
,
1306 struct drm_file
*file_priv
);
1307 extern int drm_addctx(struct drm_device
*dev
, void *data
,
1308 struct drm_file
*file_priv
);
1309 extern int drm_getctx(struct drm_device
*dev
, void *data
,
1310 struct drm_file
*file_priv
);
1311 extern int drm_switchctx(struct drm_device
*dev
, void *data
,
1312 struct drm_file
*file_priv
);
1313 extern int drm_newctx(struct drm_device
*dev
, void *data
,
1314 struct drm_file
*file_priv
);
1315 extern int drm_rmctx(struct drm_device
*dev
, void *data
,
1316 struct drm_file
*file_priv
);
1318 extern int drm_ctxbitmap_init(struct drm_device
*dev
);
1319 extern void drm_ctxbitmap_cleanup(struct drm_device
*dev
);
1320 extern void drm_ctxbitmap_free(struct drm_device
*dev
, int ctx_handle
);
1322 extern int drm_setsareactx(struct drm_device
*dev
, void *data
,
1323 struct drm_file
*file_priv
);
1324 extern int drm_getsareactx(struct drm_device
*dev
, void *data
,
1325 struct drm_file
*file_priv
);
1327 /* Authentication IOCTL support (drm_auth.h) */
1328 extern int drm_getmagic(struct drm_device
*dev
, void *data
,
1329 struct drm_file
*file_priv
);
1330 extern int drm_authmagic(struct drm_device
*dev
, void *data
,
1331 struct drm_file
*file_priv
);
1332 extern int drm_remove_magic(struct drm_master
*master
, drm_magic_t magic
);
1334 /* Cache management (drm_cache.c) */
1335 void drm_clflush_pages(struct page
*pages
[], unsigned long num_pages
);
1336 void drm_clflush_sg(struct sg_table
*st
);
1337 void drm_clflush_virt_range(char *addr
, unsigned long length
);
1339 /* Locking IOCTL support (drm_lock.h) */
1340 extern int drm_lock(struct drm_device
*dev
, void *data
,
1341 struct drm_file
*file_priv
);
1342 extern int drm_unlock(struct drm_device
*dev
, void *data
,
1343 struct drm_file
*file_priv
);
1344 extern int drm_lock_free(struct drm_lock_data
*lock_data
, unsigned int context
);
1345 extern void drm_idlelock_take(struct drm_lock_data
*lock_data
);
1346 extern void drm_idlelock_release(struct drm_lock_data
*lock_data
);
1349 * These are exported to drivers so that they can implement fencing using
1350 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1353 extern int drm_i_have_hw_lock(struct drm_device
*dev
, struct drm_file
*file_priv
);
1355 /* Buffer management support (drm_bufs.h) */
1356 extern int drm_addbufs_agp(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1357 extern int drm_addbufs_pci(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1358 extern int drm_addmap(struct drm_device
*dev
, resource_size_t offset
,
1359 unsigned int size
, enum drm_map_type type
,
1360 enum drm_map_flags flags
, struct drm_local_map
**map_ptr
);
1361 extern int drm_addmap_ioctl(struct drm_device
*dev
, void *data
,
1362 struct drm_file
*file_priv
);
1363 extern int drm_rmmap(struct drm_device
*dev
, struct drm_local_map
*map
);
1364 extern int drm_rmmap_locked(struct drm_device
*dev
, struct drm_local_map
*map
);
1365 extern int drm_rmmap_ioctl(struct drm_device
*dev
, void *data
,
1366 struct drm_file
*file_priv
);
1367 extern int drm_addbufs(struct drm_device
*dev
, void *data
,
1368 struct drm_file
*file_priv
);
1369 extern int drm_infobufs(struct drm_device
*dev
, void *data
,
1370 struct drm_file
*file_priv
);
1371 extern int drm_markbufs(struct drm_device
*dev
, void *data
,
1372 struct drm_file
*file_priv
);
1373 extern int drm_freebufs(struct drm_device
*dev
, void *data
,
1374 struct drm_file
*file_priv
);
1375 extern int drm_mapbufs(struct drm_device
*dev
, void *data
,
1376 struct drm_file
*file_priv
);
1378 /* DMA support (drm_dma.h) */
1379 extern int drm_dma_setup(struct drm_device
*dev
);
1380 extern void drm_dma_takedown(struct drm_device
*dev
);
1381 extern void drm_free_buffer(struct drm_device
*dev
, struct drm_buf
* buf
);
1382 extern void drm_core_reclaim_buffers(struct drm_device
*dev
,
1383 struct drm_file
*filp
);
1385 /* IRQ support (drm_irq.h) */
1386 extern int drm_control(struct drm_device
*dev
, void *data
,
1387 struct drm_file
*file_priv
);
1388 extern int drm_irq_install(struct drm_device
*dev
);
1389 extern int drm_irq_uninstall(struct drm_device
*dev
);
1391 extern int drm_vblank_init(struct drm_device
*dev
, int num_crtcs
);
1392 extern int drm_wait_vblank(struct drm_device
*dev
, void *data
,
1393 struct drm_file
*filp
);
1394 extern int drm_vblank_wait(struct drm_device
*dev
, unsigned int *vbl_seq
);
1395 extern u32
drm_vblank_count(struct drm_device
*dev
, int crtc
);
1396 extern u32
drm_vblank_count_and_time(struct drm_device
*dev
, int crtc
,
1397 struct timeval
*vblanktime
);
1398 extern void drm_send_vblank_event(struct drm_device
*dev
, int crtc
,
1399 struct drm_pending_vblank_event
*e
);
1400 extern bool drm_handle_vblank(struct drm_device
*dev
, int crtc
);
1401 extern int drm_vblank_get(struct drm_device
*dev
, int crtc
);
1402 extern void drm_vblank_put(struct drm_device
*dev
, int crtc
);
1403 extern void drm_vblank_off(struct drm_device
*dev
, int crtc
);
1404 extern void drm_vblank_cleanup(struct drm_device
*dev
);
1405 extern u32
drm_get_last_vbltimestamp(struct drm_device
*dev
, int crtc
,
1406 struct timeval
*tvblank
, unsigned flags
);
1407 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device
*dev
,
1408 int crtc
, int *max_error
,
1409 struct timeval
*vblank_time
,
1411 struct drm_crtc
*refcrtc
);
1412 extern void drm_calc_timestamping_constants(struct drm_crtc
*crtc
);
1415 drm_mode_parse_command_line_for_connector(const char *mode_option
,
1416 struct drm_connector
*connector
,
1417 struct drm_cmdline_mode
*mode
);
1419 extern struct drm_display_mode
*
1420 drm_mode_create_from_cmdline_mode(struct drm_device
*dev
,
1421 struct drm_cmdline_mode
*cmd
);
1423 extern int drm_display_mode_from_videomode(const struct videomode
*vm
,
1424 struct drm_display_mode
*dmode
);
1425 extern int of_get_drm_display_mode(struct device_node
*np
,
1426 struct drm_display_mode
*dmode
,
1429 /* Modesetting support */
1430 extern void drm_vblank_pre_modeset(struct drm_device
*dev
, int crtc
);
1431 extern void drm_vblank_post_modeset(struct drm_device
*dev
, int crtc
);
1432 extern int drm_modeset_ctl(struct drm_device
*dev
, void *data
,
1433 struct drm_file
*file_priv
);
1435 /* AGP/GART support (drm_agpsupport.h) */
1437 #include <drm/drm_agpsupport.h>
1439 /* Stub support (drm_stub.h) */
1440 extern int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
1441 struct drm_file
*file_priv
);
1442 extern int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
1443 struct drm_file
*file_priv
);
1444 struct drm_master
*drm_master_create(struct drm_minor
*minor
);
1445 extern struct drm_master
*drm_master_get(struct drm_master
*master
);
1446 extern void drm_master_put(struct drm_master
**master
);
1448 extern void drm_put_dev(struct drm_device
*dev
);
1449 extern int drm_put_minor(struct drm_minor
**minor
);
1450 extern void drm_unplug_dev(struct drm_device
*dev
);
1451 extern unsigned int drm_debug
;
1453 extern unsigned int drm_vblank_offdelay
;
1454 extern unsigned int drm_timestamp_precision
;
1455 extern unsigned int drm_timestamp_monotonic
;
1457 extern struct class *drm_class
;
1458 extern struct proc_dir_entry
*drm_proc_root
;
1459 extern struct dentry
*drm_debugfs_root
;
1461 extern struct idr drm_minors_idr
;
1463 extern struct drm_local_map
*drm_getsarea(struct drm_device
*dev
);
1465 /* Proc support (drm_proc.h) */
1466 extern int drm_proc_init(struct drm_minor
*minor
, struct proc_dir_entry
*root
);
1467 extern int drm_proc_cleanup(struct drm_minor
*minor
, struct proc_dir_entry
*root
);
1469 /* Debugfs support */
1470 #if defined(CONFIG_DEBUG_FS)
1471 extern int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1472 struct dentry
*root
);
1473 extern int drm_debugfs_create_files(struct drm_info_list
*files
, int count
,
1474 struct dentry
*root
, struct drm_minor
*minor
);
1475 extern int drm_debugfs_remove_files(struct drm_info_list
*files
, int count
,
1476 struct drm_minor
*minor
);
1477 extern int drm_debugfs_cleanup(struct drm_minor
*minor
);
1480 /* Info file support */
1481 extern int drm_name_info(struct seq_file
*m
, void *data
);
1482 extern int drm_vm_info(struct seq_file
*m
, void *data
);
1483 extern int drm_bufs_info(struct seq_file
*m
, void *data
);
1484 extern int drm_vblank_info(struct seq_file
*m
, void *data
);
1485 extern int drm_clients_info(struct seq_file
*m
, void* data
);
1486 extern int drm_gem_name_info(struct seq_file
*m
, void *data
);
1489 extern struct dma_buf
*drm_gem_prime_export(struct drm_device
*dev
,
1490 struct drm_gem_object
*obj
, int flags
);
1491 extern int drm_gem_prime_handle_to_fd(struct drm_device
*dev
,
1492 struct drm_file
*file_priv
, uint32_t handle
, uint32_t flags
,
1494 extern struct drm_gem_object
*drm_gem_prime_import(struct drm_device
*dev
,
1495 struct dma_buf
*dma_buf
);
1496 extern int drm_gem_prime_fd_to_handle(struct drm_device
*dev
,
1497 struct drm_file
*file_priv
, int prime_fd
, uint32_t *handle
);
1499 extern int drm_prime_handle_to_fd_ioctl(struct drm_device
*dev
, void *data
,
1500 struct drm_file
*file_priv
);
1501 extern int drm_prime_fd_to_handle_ioctl(struct drm_device
*dev
, void *data
,
1502 struct drm_file
*file_priv
);
1504 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table
*sgt
, struct page
**pages
,
1505 dma_addr_t
*addrs
, int max_pages
);
1506 extern struct sg_table
*drm_prime_pages_to_sg(struct page
**pages
, int nr_pages
);
1507 extern void drm_prime_gem_destroy(struct drm_gem_object
*obj
, struct sg_table
*sg
);
1509 int drm_gem_dumb_destroy(struct drm_file
*file
,
1510 struct drm_device
*dev
,
1513 void drm_prime_init_file_private(struct drm_prime_file_private
*prime_fpriv
);
1514 void drm_prime_destroy_file_private(struct drm_prime_file_private
*prime_fpriv
);
1515 int drm_prime_lookup_buf_handle(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
, uint32_t *handle
);
1516 void drm_prime_remove_buf_handle(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
);
1518 int drm_prime_add_dma_buf(struct drm_device
*dev
, struct drm_gem_object
*obj
);
1519 int drm_prime_lookup_obj(struct drm_device
*dev
, struct dma_buf
*buf
,
1520 struct drm_gem_object
**obj
);
1523 extern int drm_vma_info(struct seq_file
*m
, void *data
);
1526 /* Scatter Gather Support (drm_scatter.h) */
1527 extern void drm_sg_cleanup(struct drm_sg_mem
* entry
);
1528 extern int drm_sg_alloc(struct drm_device
*dev
, void *data
,
1529 struct drm_file
*file_priv
);
1530 extern int drm_sg_free(struct drm_device
*dev
, void *data
,
1531 struct drm_file
*file_priv
);
1533 /* ATI PCIGART support (ati_pcigart.h) */
1534 extern int drm_ati_pcigart_init(struct drm_device
*dev
,
1535 struct drm_ati_pcigart_info
* gart_info
);
1536 extern int drm_ati_pcigart_cleanup(struct drm_device
*dev
,
1537 struct drm_ati_pcigart_info
* gart_info
);
1539 extern drm_dma_handle_t
*drm_pci_alloc(struct drm_device
*dev
, size_t size
,
1541 extern void __drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1542 extern void drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1544 /* sysfs support (drm_sysfs.c) */
1545 struct drm_sysfs_class
;
1546 extern struct class *drm_sysfs_create(struct module
*owner
, char *name
);
1547 extern void drm_sysfs_destroy(void);
1548 extern int drm_sysfs_device_add(struct drm_minor
*minor
);
1549 extern void drm_sysfs_hotplug_event(struct drm_device
*dev
);
1550 extern void drm_sysfs_device_remove(struct drm_minor
*minor
);
1551 extern int drm_sysfs_connector_add(struct drm_connector
*connector
);
1552 extern void drm_sysfs_connector_remove(struct drm_connector
*connector
);
1554 /* Graphics Execution Manager library functions (drm_gem.c) */
1555 int drm_gem_init(struct drm_device
*dev
);
1556 void drm_gem_destroy(struct drm_device
*dev
);
1557 void drm_gem_object_release(struct drm_gem_object
*obj
);
1558 void drm_gem_object_free(struct kref
*kref
);
1559 struct drm_gem_object
*drm_gem_object_alloc(struct drm_device
*dev
,
1561 int drm_gem_object_init(struct drm_device
*dev
,
1562 struct drm_gem_object
*obj
, size_t size
);
1563 void drm_gem_private_object_init(struct drm_device
*dev
,
1564 struct drm_gem_object
*obj
, size_t size
);
1565 void drm_gem_object_handle_free(struct drm_gem_object
*obj
);
1566 void drm_gem_vm_open(struct vm_area_struct
*vma
);
1567 void drm_gem_vm_close(struct vm_area_struct
*vma
);
1568 int drm_gem_mmap_obj(struct drm_gem_object
*obj
, unsigned long obj_size
,
1569 struct vm_area_struct
*vma
);
1570 int drm_gem_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1572 #include <drm/drm_global.h>
1575 drm_gem_object_reference(struct drm_gem_object
*obj
)
1577 kref_get(&obj
->refcount
);
1581 drm_gem_object_unreference(struct drm_gem_object
*obj
)
1584 kref_put(&obj
->refcount
, drm_gem_object_free
);
1588 drm_gem_object_unreference_unlocked(struct drm_gem_object
*obj
)
1590 if (obj
&& !atomic_add_unless(&obj
->refcount
.refcount
, -1, 1)) {
1591 struct drm_device
*dev
= obj
->dev
;
1593 mutex_lock(&dev
->struct_mutex
);
1594 if (likely(atomic_dec_and_test(&obj
->refcount
.refcount
)))
1595 drm_gem_object_free(&obj
->refcount
);
1596 mutex_unlock(&dev
->struct_mutex
);
1600 int drm_gem_handle_create(struct drm_file
*file_priv
,
1601 struct drm_gem_object
*obj
,
1603 int drm_gem_handle_delete(struct drm_file
*filp
, u32 handle
);
1606 drm_gem_object_handle_reference(struct drm_gem_object
*obj
)
1608 drm_gem_object_reference(obj
);
1609 atomic_inc(&obj
->handle_count
);
1613 drm_gem_object_handle_unreference_unlocked(struct drm_gem_object
*obj
)
1618 if (atomic_read(&obj
->handle_count
) == 0)
1622 * Must bump handle count first as this may be the last
1623 * ref, in which case the object would disappear before we
1624 * checked for a name
1627 if (atomic_dec_and_test(&obj
->handle_count
))
1628 drm_gem_object_handle_free(obj
);
1629 drm_gem_object_unreference_unlocked(obj
);
1632 void drm_gem_free_mmap_offset(struct drm_gem_object
*obj
);
1633 int drm_gem_create_mmap_offset(struct drm_gem_object
*obj
);
1635 struct drm_gem_object
*drm_gem_object_lookup(struct drm_device
*dev
,
1636 struct drm_file
*filp
,
1638 int drm_gem_close_ioctl(struct drm_device
*dev
, void *data
,
1639 struct drm_file
*file_priv
);
1640 int drm_gem_flink_ioctl(struct drm_device
*dev
, void *data
,
1641 struct drm_file
*file_priv
);
1642 int drm_gem_open_ioctl(struct drm_device
*dev
, void *data
,
1643 struct drm_file
*file_priv
);
1644 void drm_gem_open(struct drm_device
*dev
, struct drm_file
*file_private
);
1645 void drm_gem_release(struct drm_device
*dev
, struct drm_file
*file_private
);
1647 extern void drm_core_ioremap(struct drm_local_map
*map
, struct drm_device
*dev
);
1648 extern void drm_core_ioremap_wc(struct drm_local_map
*map
, struct drm_device
*dev
);
1649 extern void drm_core_ioremapfree(struct drm_local_map
*map
, struct drm_device
*dev
);
1651 static __inline__
struct drm_local_map
*drm_core_findmap(struct drm_device
*dev
,
1654 struct drm_map_list
*_entry
;
1655 list_for_each_entry(_entry
, &dev
->maplist
, head
)
1656 if (_entry
->user_token
== token
)
1661 static __inline__
void drm_core_dropmap(struct drm_local_map
*map
)
1665 #include <drm/drm_mem_util.h>
1667 extern int drm_fill_in_dev(struct drm_device
*dev
,
1668 const struct pci_device_id
*ent
,
1669 struct drm_driver
*driver
);
1670 int drm_get_minor(struct drm_device
*dev
, struct drm_minor
**minor
, int type
);
1674 static __inline__
int drm_pci_device_is_agp(struct drm_device
*dev
)
1676 if (dev
->driver
->device_is_agp
!= NULL
) {
1677 int err
= (*dev
->driver
->device_is_agp
) (dev
);
1684 return pci_find_capability(dev
->pdev
, PCI_CAP_ID_AGP
);
1687 extern int drm_pci_init(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1688 extern void drm_pci_exit(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1689 extern int drm_get_pci_dev(struct pci_dev
*pdev
,
1690 const struct pci_device_id
*ent
,
1691 struct drm_driver
*driver
);
1693 #define DRM_PCIE_SPEED_25 1
1694 #define DRM_PCIE_SPEED_50 2
1695 #define DRM_PCIE_SPEED_80 4
1697 extern int drm_pcie_get_speed_cap_mask(struct drm_device
*dev
, u32
*speed_mask
);
1699 /* platform section */
1700 extern int drm_platform_init(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1701 extern void drm_platform_exit(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1703 extern int drm_get_platform_dev(struct platform_device
*pdev
,
1704 struct drm_driver
*driver
);
1706 /* returns true if currently okay to sleep */
1707 static __inline__
bool drm_can_sleep(void)
1709 if (in_atomic() || in_dbg_master() || irqs_disabled())
1714 #endif /* __KERNEL__ */