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>
58 #include <linux/slab.h>
59 #if defined(__alpha__) || defined(__powerpc__)
60 #include <asm/pgtable.h> /* For pte_wrprotect */
64 #include <asm/uaccess.h>
68 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
69 #include <linux/types.h>
70 #include <linux/agp_backend.h>
72 #include <linux/workqueue.h>
73 #include <linux/poll.h>
74 #include <asm/pgalloc.h>
76 #include <drm/drm_sarea.h>
78 #include <linux/idr.h>
80 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
81 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
91 #include <drm/drm_os_linux.h>
92 #include <drm/drm_hashtab.h>
93 #include <drm/drm_mm.h>
95 #define DRM_UT_CORE 0x01
96 #define DRM_UT_DRIVER 0x02
97 #define DRM_UT_KMS 0x04
98 #define DRM_UT_PRIME 0x08
100 * Three debug levels are defined.
101 * drm_core, drm_driver, drm_kms
102 * drm_core level can be used in the generic drm code. For example:
103 * drm_ioctl, drm_mm, drm_memory
104 * The macro definition of DRM_DEBUG is used.
105 * DRM_DEBUG(fmt, args...)
106 * The debug info by using the DRM_DEBUG can be obtained by adding
107 * the boot option of "drm.debug=1".
109 * drm_driver level can be used in the specific drm driver. It is used
110 * to add the debug info related with the drm driver. For example:
111 * i915_drv, i915_dma, i915_gem, radeon_drv,
112 * The macro definition of DRM_DEBUG_DRIVER can be used.
113 * DRM_DEBUG_DRIVER(fmt, args...)
114 * The debug info by using the DRM_DEBUG_DRIVER can be obtained by
115 * adding the boot option of "drm.debug=0x02"
117 * drm_kms level can be used in the KMS code related with specific drm driver.
118 * It is used to add the debug info related with KMS mode. For example:
119 * the connector/crtc ,
120 * The macro definition of DRM_DEBUG_KMS can be used.
121 * DRM_DEBUG_KMS(fmt, args...)
122 * The debug info by using the DRM_DEBUG_KMS can be obtained by
123 * adding the boot option of "drm.debug=0x04"
125 * If we add the boot option of "drm.debug=0x06", we can get the debug info by
126 * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
127 * If we add the boot option of "drm.debug=0x05", we can get the debug info by
128 * using the DRM_DEBUG_KMS and DRM_DEBUG.
131 extern __printf(4, 5)
132 void drm_ut_debug_printk(unsigned int request_level
,
134 const char *function_name
,
135 const char *format
, ...);
136 extern __printf(2, 3)
137 int drm_err(const char *func
, const char *format
, ...);
139 /***********************************************************************/
140 /** \name DRM template customization defaults */
143 /* driver capabilities and requirements mask */
144 #define DRIVER_USE_AGP 0x1
145 #define DRIVER_REQUIRE_AGP 0x2
146 #define DRIVER_USE_MTRR 0x4
147 #define DRIVER_PCI_DMA 0x8
148 #define DRIVER_SG 0x10
149 #define DRIVER_HAVE_DMA 0x20
150 #define DRIVER_HAVE_IRQ 0x40
151 #define DRIVER_IRQ_SHARED 0x80
152 #define DRIVER_IRQ_VBL 0x100
153 #define DRIVER_DMA_QUEUE 0x200
154 #define DRIVER_FB_DMA 0x400
155 #define DRIVER_IRQ_VBL2 0x800
156 #define DRIVER_GEM 0x1000
157 #define DRIVER_MODESET 0x2000
158 #define DRIVER_PRIME 0x4000
160 #define DRIVER_BUS_PCI 0x1
161 #define DRIVER_BUS_PLATFORM 0x2
162 #define DRIVER_BUS_USB 0x3
164 /***********************************************************************/
165 /** \name Begin the DRM... */
168 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
169 also include looping detection. */
171 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
172 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
173 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
174 #define DRM_LOOPING_LIMIT 5000000
175 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
176 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
178 #define DRM_FLAG_DEBUG 0x01
180 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
181 #define DRM_MAP_HASH_OFFSET 0x10000000
185 /***********************************************************************/
186 /** \name Macros to make printk easier */
192 * \param fmt printf() like format string.
193 * \param arg arguments
195 #define DRM_ERROR(fmt, ...) \
196 drm_err(__func__, fmt, ##__VA_ARGS__)
198 #define DRM_INFO(fmt, ...) \
199 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
204 * \param fmt printf() like format string.
205 * \param arg arguments
208 #define DRM_DEBUG(fmt, args...) \
210 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
211 __func__, fmt, ##args); \
214 #define DRM_DEBUG_DRIVER(fmt, args...) \
216 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
217 __func__, fmt, ##args); \
219 #define DRM_DEBUG_KMS(fmt, args...) \
221 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
222 __func__, fmt, ##args); \
224 #define DRM_DEBUG_PRIME(fmt, args...) \
226 drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME, \
227 __func__, fmt, ##args); \
229 #define DRM_LOG(fmt, args...) \
231 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
232 NULL, fmt, ##args); \
234 #define DRM_LOG_KMS(fmt, args...) \
236 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
237 NULL, fmt, ##args); \
239 #define DRM_LOG_MODE(fmt, args...) \
241 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
242 NULL, fmt, ##args); \
244 #define DRM_LOG_DRIVER(fmt, args...) \
246 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
247 NULL, fmt, ##args); \
250 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
251 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
252 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
253 #define DRM_DEBUG(fmt, arg...) do { } while (0)
254 #define DRM_LOG(fmt, arg...) do { } while (0)
255 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
256 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
257 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
263 /***********************************************************************/
264 /** \name Internal types and structures */
267 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
269 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
270 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
272 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
275 * Test that the hardware lock is held by the caller, returning otherwise.
277 * \param dev DRM device.
278 * \param filp file pointer of the caller.
280 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
282 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
283 _file_priv->master->lock.file_priv != _file_priv) { \
284 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
285 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
286 _file_priv->master->lock.file_priv, _file_priv); \
292 * Ioctl function type.
294 * \param inode device inode.
295 * \param file_priv DRM file private pointer.
296 * \param cmd command.
297 * \param arg argument.
299 typedef int drm_ioctl_t(struct drm_device
*dev
, void *data
,
300 struct drm_file
*file_priv
);
302 typedef int drm_ioctl_compat_t(struct file
*filp
, unsigned int cmd
,
305 #define DRM_IOCTL_NR(n) _IOC_NR(n)
306 #define DRM_MAJOR 226
309 #define DRM_MASTER 0x2
310 #define DRM_ROOT_ONLY 0x4
311 #define DRM_CONTROL_ALLOW 0x8
312 #define DRM_UNLOCKED 0x10
314 struct drm_ioctl_desc
{
318 unsigned int cmd_drv
;
322 * Creates a driver or general drm_ioctl_desc array entry for the given
323 * ioctl, for use by drm_ioctl().
326 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
327 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl}
329 struct drm_magic_entry
{
330 struct list_head head
;
331 struct drm_hash_item hash_item
;
332 struct drm_file
*priv
;
335 struct drm_vma_entry
{
336 struct list_head head
;
337 struct vm_area_struct
*vma
;
345 int idx
; /**< Index into master buflist */
346 int total
; /**< Buffer size */
347 int order
; /**< log-base-2(total) */
348 int used
; /**< Amount of buffer in use (for DMA) */
349 unsigned long offset
; /**< Byte offset (used internally) */
350 void *address
; /**< Address of buffer */
351 unsigned long bus_address
; /**< Bus address of buffer */
352 struct drm_buf
*next
; /**< Kernel-only: used for free list */
353 __volatile__
int waiting
; /**< On kernel DMA queue */
354 __volatile__
int pending
; /**< On hardware DMA queue */
355 struct drm_file
*file_priv
; /**< Private of holding file descr */
356 int context
; /**< Kernel queue for this buffer */
357 int while_locked
; /**< Dispatch this buffer while locked */
365 } list
; /**< Which list we're on */
367 int dev_priv_size
; /**< Size of buffer private storage */
368 void *dev_private
; /**< Per-buffer private storage */
371 /** bufs is one longer than it has to be */
372 struct drm_waitlist
{
373 int count
; /**< Number of possible buffers */
374 struct drm_buf
**bufs
; /**< List of pointers to buffers */
375 struct drm_buf
**rp
; /**< Read pointer */
376 struct drm_buf
**wp
; /**< Write pointer */
377 struct drm_buf
**end
; /**< End pointer */
378 spinlock_t read_lock
;
379 spinlock_t write_lock
;
382 struct drm_freelist
{
383 int initialized
; /**< Freelist in use */
384 atomic_t count
; /**< Number of free buffers */
385 struct drm_buf
*next
; /**< End pointer */
387 wait_queue_head_t waiting
; /**< Processes waiting on free bufs */
388 int low_mark
; /**< Low water mark */
389 int high_mark
; /**< High water mark */
390 atomic_t wfh
; /**< If waiting for high mark */
394 typedef struct drm_dma_handle
{
401 * Buffer entry. There is one of this for each buffer size order.
403 struct drm_buf_entry
{
404 int buf_size
; /**< size */
405 int buf_count
; /**< number of buffers */
406 struct drm_buf
*buflist
; /**< buffer list */
409 struct drm_dma_handle
**seglist
;
411 struct drm_freelist freelist
;
414 /* Event queued up for userspace to read */
415 struct drm_pending_event
{
416 struct drm_event
*event
;
417 struct list_head link
;
418 struct drm_file
*file_priv
;
419 pid_t pid
; /* pid of requester, no guarantee it's valid by the time
420 we deliver the event, for tracing only */
421 void (*destroy
)(struct drm_pending_event
*event
);
424 /* initial implementaton using a linked list - todo hashtab */
425 struct drm_prime_file_private
{
426 struct list_head head
;
430 /** File private data */
436 unsigned long ioctl_count
;
437 struct list_head lhead
;
438 struct drm_minor
*minor
;
439 unsigned long lock_count
;
441 /** Mapping of mm object handles to object pointers. */
442 struct idr object_idr
;
443 /** Lock for synchronization of access to object_idr. */
444 spinlock_t table_lock
;
449 int is_master
; /* this file private is a master for a minor */
450 struct drm_master
*master
; /* master this node is currently associated with
451 N.B. not always minor->master */
454 * fbs - List of framebuffers associated with this file.
456 * Protected by fbs_lock. Note that the fbs list holds a reference on
457 * the fb object to prevent it from untimely disappearing.
459 struct list_head fbs
;
460 struct mutex fbs_lock
;
462 wait_queue_head_t event_wait
;
463 struct list_head event_list
;
466 struct drm_prime_file_private prime
;
471 atomic_t use_count
; /**< Outstanding uses (+1) */
472 atomic_t finalization
; /**< Finalization in progress */
473 atomic_t block_count
; /**< Count of processes waiting */
474 atomic_t block_read
; /**< Queue blocked for reads */
475 wait_queue_head_t read_queue
; /**< Processes waiting on block_read */
476 atomic_t block_write
; /**< Queue blocked for writes */
477 wait_queue_head_t write_queue
; /**< Processes waiting on block_write */
478 atomic_t total_queued
; /**< Total queued statistic */
479 atomic_t total_flushed
; /**< Total flushes statistic */
480 atomic_t total_locks
; /**< Total locks statistics */
481 enum drm_ctx_flags flags
; /**< Context preserving and 2D-only */
482 struct drm_waitlist waitlist
; /**< Pending buffers */
483 wait_queue_head_t flush_queue
; /**< Processes waiting until flush */
489 struct drm_lock_data
{
490 struct drm_hw_lock
*hw_lock
; /**< Hardware lock */
491 /** Private of lock holder's file (NULL=kernel) */
492 struct drm_file
*file_priv
;
493 wait_queue_head_t lock_queue
; /**< Queue of blocked processes */
494 unsigned long lock_time
; /**< Time of last lock in jiffies */
496 uint32_t kernel_waiters
;
497 uint32_t user_waiters
;
504 struct drm_device_dma
{
506 struct drm_buf_entry bufs
[DRM_MAX_ORDER
+ 1]; /**< buffers, grouped by their size order */
507 int buf_count
; /**< total number of buffers */
508 struct drm_buf
**buflist
; /**< Vector of pointers into drm_device_dma::bufs */
510 int page_count
; /**< number of pages */
511 unsigned long *pagelist
; /**< page list */
512 unsigned long byte_count
;
514 _DRM_DMA_USE_AGP
= 0x01,
515 _DRM_DMA_USE_SG
= 0x02,
516 _DRM_DMA_USE_FB
= 0x04,
517 _DRM_DMA_USE_PCI_RO
= 0x08
523 * AGP memory entry. Stored as a doubly linked list.
526 unsigned long handle
; /**< handle */
528 unsigned long bound
; /**< address */
530 struct list_head head
;
536 * \sa drm_agp_init() and drm_device::agp.
538 struct drm_agp_head
{
539 DRM_AGP_KERN agp_info
; /**< AGP device information */
540 struct list_head memory
;
541 unsigned long mode
; /**< AGP mode */
542 struct agp_bridge_data
*bridge
;
543 int enabled
; /**< whether the AGP bus as been enabled */
544 int acquired
; /**< whether the AGP device has been acquired */
547 int cant_use_aperture
;
548 unsigned long page_mask
;
552 * Scatter-gather memory.
555 unsigned long handle
;
558 struct page
**pagelist
;
564 struct drm_hw_lock
*lock
;
569 * Kernel side of a mapping
571 struct drm_local_map
{
572 resource_size_t offset
; /**< Requested physical address (0 for SAREA)*/
573 unsigned long size
; /**< Requested physical size (bytes) */
574 enum drm_map_type type
; /**< Type of memory to map */
575 enum drm_map_flags flags
; /**< Flags */
576 void *handle
; /**< User-space: "Handle" to pass to mmap() */
577 /**< Kernel-space: kernel-virtual address */
578 int mtrr
; /**< MTRR slot used */
581 typedef struct drm_local_map drm_local_map_t
;
586 struct drm_map_list
{
587 struct list_head head
; /**< list head */
588 struct drm_hash_item hash
;
589 struct drm_local_map
*map
; /**< mapping */
591 struct drm_master
*master
;
592 struct drm_mm_node
*file_offset_node
; /**< fake offset */
596 * Context handle list
598 struct drm_ctx_list
{
599 struct list_head head
; /**< list head */
600 drm_context_t handle
; /**< context handle */
601 struct drm_file
*tag
; /**< associated fd private data */
604 /* location of GART table */
605 #define DRM_ATI_GART_MAIN 1
606 #define DRM_ATI_GART_FB 2
608 #define DRM_ATI_GART_PCI 1
609 #define DRM_ATI_GART_PCIE 2
610 #define DRM_ATI_GART_IGP 3
612 struct drm_ati_pcigart_info
{
613 int gart_table_location
;
617 dma_addr_t table_mask
;
618 struct drm_dma_handle
*table_handle
;
619 struct drm_local_map mapping
;
624 * GEM specific mm private for tracking GEM objects
627 struct drm_mm offset_manager
; /**< Offset mgmt for buffer objects */
628 struct drm_open_hash offset_hash
; /**< User token hash table for maps */
632 * This structure defines the drm_mm memory object, which will be used by the
633 * DRM for its buffer objects.
635 struct drm_gem_object
{
636 /** Reference count of this object */
637 struct kref refcount
;
639 /** Handle count of this object. Each handle also holds a reference */
640 atomic_t handle_count
; /* number of handles on this object */
642 /** Related drm device */
643 struct drm_device
*dev
;
645 /** File representing the shmem storage */
648 /* Mapping info for this object */
649 struct drm_map_list map_list
;
652 * Size of the object, in bytes. Immutable over the object's
658 * Global name for this object, starts at 1. 0 means unnamed.
659 * Access is covered by the object_name_lock in the related drm_device
664 * Memory domains. These monitor which caches contain read/write data
665 * related to the object. When transitioning from one set of domains
666 * to another, the driver is called to ensure that caches are suitably
667 * flushed and invalidated
669 uint32_t read_domains
;
670 uint32_t write_domain
;
673 * While validating an exec operation, the
674 * new read/write domain values are computed here.
675 * They will be transferred to the above values
676 * at the point that any cache flushing occurs
678 uint32_t pending_read_domains
;
679 uint32_t pending_write_domain
;
681 void *driver_private
;
683 /* dma buf exported from this GEM object */
684 struct dma_buf
*export_dma_buf
;
686 /* dma buf attachment backing this object */
687 struct dma_buf_attachment
*import_attach
;
690 #include <drm/drm_crtc.h>
692 /* per-master structure */
695 struct kref refcount
; /* refcount for this master */
697 struct list_head head
; /**< each minor contains a list of masters */
698 struct drm_minor
*minor
; /**< link back to minor we are a master for */
700 char *unique
; /**< Unique identifier: e.g., busid */
701 int unique_len
; /**< Length of unique field */
702 int unique_size
; /**< amount allocated */
704 int blocked
; /**< Blocked due to VC switch? */
706 /** \name Authentication */
708 struct drm_open_hash magiclist
;
709 struct list_head magicfree
;
712 struct drm_lock_data lock
; /**< Information on hardware lock */
714 void *driver_priv
; /**< Private structure for driver to use */
717 /* Size of ringbuffer for vblank timestamps. Just double-buffer
718 * in initial implementation.
720 #define DRM_VBLANKTIME_RBSIZE 2
722 /* Flags and return codes for get_vblank_timestamp() driver function. */
723 #define DRM_CALLED_FROM_VBLIRQ 1
724 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
725 #define DRM_VBLANKTIME_INVBL (1 << 1)
727 /* get_scanout_position() return flags */
728 #define DRM_SCANOUTPOS_VALID (1 << 0)
729 #define DRM_SCANOUTPOS_INVBL (1 << 1)
730 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
734 int (*get_irq
)(struct drm_device
*dev
);
735 const char *(*get_name
)(struct drm_device
*dev
);
736 int (*set_busid
)(struct drm_device
*dev
, struct drm_master
*master
);
737 int (*set_unique
)(struct drm_device
*dev
, struct drm_master
*master
,
738 struct drm_unique
*unique
);
739 int (*irq_by_busid
)(struct drm_device
*dev
, struct drm_irq_busid
*p
);
740 /* hooks that are for PCI */
741 int (*agp_init
)(struct drm_device
*dev
);
746 * DRM driver structure. This structure represent the common code for
747 * a family of cards. There will one drm_device for each card present
751 int (*load
) (struct drm_device
*, unsigned long flags
);
752 int (*firstopen
) (struct drm_device
*);
753 int (*open
) (struct drm_device
*, struct drm_file
*);
754 void (*preclose
) (struct drm_device
*, struct drm_file
*file_priv
);
755 void (*postclose
) (struct drm_device
*, struct drm_file
*);
756 void (*lastclose
) (struct drm_device
*);
757 int (*unload
) (struct drm_device
*);
758 int (*suspend
) (struct drm_device
*, pm_message_t state
);
759 int (*resume
) (struct drm_device
*);
760 int (*dma_ioctl
) (struct drm_device
*dev
, void *data
, struct drm_file
*file_priv
);
761 int (*dma_quiescent
) (struct drm_device
*);
762 int (*context_dtor
) (struct drm_device
*dev
, int context
);
765 * get_vblank_counter - get raw hardware vblank counter
767 * @crtc: counter to fetch
769 * Driver callback for fetching a raw hardware vblank counter for @crtc.
770 * If a device doesn't have a hardware counter, the driver can simply
771 * return the value of drm_vblank_count. The DRM core will account for
772 * missed vblank events while interrupts where disabled based on system
775 * Wraparound handling and loss of events due to modesetting is dealt
776 * with in the DRM core code.
779 * Raw vblank counter value.
781 u32 (*get_vblank_counter
) (struct drm_device
*dev
, int crtc
);
784 * enable_vblank - enable vblank interrupt events
786 * @crtc: which irq to enable
788 * Enable vblank interrupts for @crtc. If the device doesn't have
789 * a hardware vblank counter, this routine should be a no-op, since
790 * interrupts will have to stay on to keep the count accurate.
793 * Zero on success, appropriate errno if the given @crtc's vblank
794 * interrupt cannot be enabled.
796 int (*enable_vblank
) (struct drm_device
*dev
, int crtc
);
799 * disable_vblank - disable vblank interrupt events
801 * @crtc: which irq to enable
803 * Disable vblank interrupts for @crtc. If the device doesn't have
804 * a hardware vblank counter, this routine should be a no-op, since
805 * interrupts will have to stay on to keep the count accurate.
807 void (*disable_vblank
) (struct drm_device
*dev
, int crtc
);
810 * Called by \c drm_device_is_agp. Typically used to determine if a
811 * card is really attached to AGP or not.
813 * \param dev DRM device handle
816 * One of three values is returned depending on whether or not the
817 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
818 * (return of 1), or may or may not be AGP (return of 2).
820 int (*device_is_agp
) (struct drm_device
*dev
);
823 * Called by vblank timestamping code.
825 * Return the current display scanout position from a crtc.
827 * \param dev DRM device.
828 * \param crtc Id of the crtc to query.
829 * \param *vpos Target location for current vertical scanout position.
830 * \param *hpos Target location for current horizontal scanout position.
832 * Returns vpos as a positive number while in active scanout area.
833 * Returns vpos as a negative number inside vblank, counting the number
834 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
835 * until start of active scanout / end of vblank."
837 * \return Flags, or'ed together as follows:
839 * DRM_SCANOUTPOS_VALID = Query successful.
840 * DRM_SCANOUTPOS_INVBL = Inside vblank.
841 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
842 * this flag means that returned position may be offset by a constant
843 * but unknown small number of scanlines wrt. real scanout position.
846 int (*get_scanout_position
) (struct drm_device
*dev
, int crtc
,
847 int *vpos
, int *hpos
);
850 * Called by \c drm_get_last_vbltimestamp. Should return a precise
851 * timestamp when the most recent VBLANK interval ended or will end.
853 * Specifically, the timestamp in @vblank_time should correspond as
854 * closely as possible to the time when the first video scanline of
855 * the video frame after the end of VBLANK will start scanning out,
856 * the time immediately after end of the VBLANK interval. If the
857 * @crtc is currently inside VBLANK, this will be a time in the future.
858 * If the @crtc is currently scanning out a frame, this will be the
859 * past start time of the current scanout. This is meant to adhere
860 * to the OpenML OML_sync_control extension specification.
862 * \param dev dev DRM device handle.
863 * \param crtc crtc for which timestamp should be returned.
864 * \param *max_error Maximum allowable timestamp error in nanoseconds.
865 * Implementation should strive to provide timestamp
866 * with an error of at most *max_error nanoseconds.
867 * Returns true upper bound on error for timestamp.
868 * \param *vblank_time Target location for returned vblank timestamp.
869 * \param flags 0 = Defaults, no special treatment needed.
870 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
871 * irq handler. Some drivers need to apply some workarounds
872 * for gpu-specific vblank irq quirks if flag is set.
875 * Zero if timestamping isn't supported in current display mode or a
876 * negative number on failure. A positive status code on success,
877 * which describes how the vblank_time timestamp was computed.
879 int (*get_vblank_timestamp
) (struct drm_device
*dev
, int crtc
,
881 struct timeval
*vblank_time
,
884 /* these have to be filled in */
886 irqreturn_t(*irq_handler
) (DRM_IRQ_ARGS
);
887 void (*irq_preinstall
) (struct drm_device
*dev
);
888 int (*irq_postinstall
) (struct drm_device
*dev
);
889 void (*irq_uninstall
) (struct drm_device
*dev
);
890 void (*set_version
) (struct drm_device
*dev
,
891 struct drm_set_version
*sv
);
893 /* Master routines */
894 int (*master_create
)(struct drm_device
*dev
, struct drm_master
*master
);
895 void (*master_destroy
)(struct drm_device
*dev
, struct drm_master
*master
);
897 * master_set is called whenever the minor master is set.
898 * master_drop is called whenever the minor master is dropped.
901 int (*master_set
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
903 void (*master_drop
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
906 int (*debugfs_init
)(struct drm_minor
*minor
);
907 void (*debugfs_cleanup
)(struct drm_minor
*minor
);
910 * Driver-specific constructor for drm_gem_objects, to set up
911 * obj->driver_private.
913 * Returns 0 on success.
915 int (*gem_init_object
) (struct drm_gem_object
*obj
);
916 void (*gem_free_object
) (struct drm_gem_object
*obj
);
917 int (*gem_open_object
) (struct drm_gem_object
*, struct drm_file
*);
918 void (*gem_close_object
) (struct drm_gem_object
*, struct drm_file
*);
921 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
922 int (*prime_handle_to_fd
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
923 uint32_t handle
, uint32_t flags
, int *prime_fd
);
924 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
925 int (*prime_fd_to_handle
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
926 int prime_fd
, uint32_t *handle
);
927 /* export GEM -> dmabuf */
928 struct dma_buf
* (*gem_prime_export
)(struct drm_device
*dev
,
929 struct drm_gem_object
*obj
, int flags
);
930 /* import dmabuf -> GEM */
931 struct drm_gem_object
* (*gem_prime_import
)(struct drm_device
*dev
,
932 struct dma_buf
*dma_buf
);
933 /* low-level interface used by drm_gem_prime_{import,export} */
934 int (*gem_prime_pin
)(struct drm_gem_object
*obj
);
935 struct sg_table
*(*gem_prime_get_sg_table
)(struct drm_gem_object
*obj
);
936 struct drm_gem_object
*(*gem_prime_import_sg_table
)(
937 struct drm_device
*dev
, size_t size
,
938 struct sg_table
*sgt
);
939 void *(*gem_prime_vmap
)(struct drm_gem_object
*obj
);
940 void (*gem_prime_vunmap
)(struct drm_gem_object
*obj
, void *vaddr
);
942 /* vga arb irq handler */
943 void (*vgaarb_irq
)(struct drm_device
*dev
, bool state
);
945 /* dumb alloc support */
946 int (*dumb_create
)(struct drm_file
*file_priv
,
947 struct drm_device
*dev
,
948 struct drm_mode_create_dumb
*args
);
949 int (*dumb_map_offset
)(struct drm_file
*file_priv
,
950 struct drm_device
*dev
, uint32_t handle
,
952 int (*dumb_destroy
)(struct drm_file
*file_priv
,
953 struct drm_device
*dev
,
956 /* Driver private ops for this object */
957 const struct vm_operations_struct
*gem_vm_ops
;
968 struct drm_ioctl_desc
*ioctls
;
970 const struct file_operations
*fops
;
972 struct pci_driver
*pci
;
973 struct platform_device
*platform_device
;
974 struct usb_driver
*usb
;
978 /* List of devices hanging off this driver */
979 struct list_head device_list
;
982 #define DRM_MINOR_UNASSIGNED 0
983 #define DRM_MINOR_LEGACY 1
984 #define DRM_MINOR_CONTROL 2
985 #define DRM_MINOR_RENDER 3
989 * debugfs node list. This structure represents a debugfs file to
990 * be created by the drm core
992 struct drm_debugfs_list
{
993 const char *name
; /** file name */
994 int (*show
)(struct seq_file
*, void*); /** show callback */
995 u32 driver_features
; /**< Required driver features for this entry */
999 * debugfs node structure. This structure represents a debugfs file.
1001 struct drm_debugfs_node
{
1002 struct list_head list
;
1003 struct drm_minor
*minor
;
1004 struct drm_debugfs_list
*debugfs_ent
;
1005 struct dentry
*dent
;
1009 * Info file list entry. This structure represents a debugfs or proc file to
1010 * be created by the drm core
1012 struct drm_info_list
{
1013 const char *name
; /** file name */
1014 int (*show
)(struct seq_file
*, void*); /** show callback */
1015 u32 driver_features
; /**< Required driver features for this entry */
1020 * debugfs node structure. This structure represents a debugfs file.
1022 struct drm_info_node
{
1023 struct list_head list
;
1024 struct drm_minor
*minor
;
1025 const struct drm_info_list
*info_ent
;
1026 struct dentry
*dent
;
1030 * DRM minor structure. This structure represents a drm minor number.
1033 int index
; /**< Minor device number */
1034 int type
; /**< Control or render */
1035 dev_t device
; /**< Device number for mknod */
1036 struct device kdev
; /**< Linux device */
1037 struct drm_device
*dev
;
1039 struct proc_dir_entry
*proc_root
; /**< proc directory entry */
1040 struct drm_info_node proc_nodes
;
1041 struct dentry
*debugfs_root
;
1043 struct list_head debugfs_list
;
1044 struct mutex debugfs_lock
; /* Protects debugfs_list. */
1046 struct drm_master
*master
; /* currently active master for this node */
1047 struct list_head master_list
;
1048 struct drm_mode_group mode_group
;
1051 /* mode specified on the command line */
1052 struct drm_cmdline_mode
{
1054 bool refresh_specified
;
1063 enum drm_connector_force force
;
1067 struct drm_pending_vblank_event
{
1068 struct drm_pending_event base
;
1070 struct drm_event_vblank event
;
1074 * DRM device structure. This structure represent a complete card that
1075 * may contain multiple heads.
1078 struct list_head driver_item
; /**< list of devices per driver */
1079 char *devname
; /**< For /proc/interrupts */
1080 int if_version
; /**< Highest interface version set */
1084 spinlock_t count_lock
; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1085 struct mutex struct_mutex
; /**< For others */
1088 /** \name Usage Counters */
1090 int open_count
; /**< Outstanding files open */
1091 atomic_t ioctl_count
; /**< Outstanding IOCTLs pending */
1092 atomic_t vma_count
; /**< Outstanding vma areas open */
1093 int buf_use
; /**< Buffers in use -- cannot alloc */
1094 atomic_t buf_alloc
; /**< Buffer allocation in progress */
1097 /** \name Performance counters */
1099 unsigned long counters
;
1100 enum drm_stat_type types
[15];
1101 atomic_t counts
[15];
1104 struct list_head filelist
;
1106 /** \name Memory management */
1108 struct list_head maplist
; /**< Linked list of regions */
1109 int map_count
; /**< Number of mappable regions */
1110 struct drm_open_hash map_hash
; /**< User token hash table for maps */
1112 /** \name Context handle management */
1114 struct list_head ctxlist
; /**< Linked list of context handles */
1115 int ctx_count
; /**< Number of context handles */
1116 struct mutex ctxlist_mutex
; /**< For ctxlist */
1120 struct list_head vmalist
; /**< List of vmas (for debugging) */
1124 /** \name DMA support */
1126 struct drm_device_dma
*dma
; /**< Optional pointer for DMA support */
1129 /** \name Context support */
1131 int irq_enabled
; /**< True if irq handler is enabled */
1132 __volatile__
long context_flag
; /**< Context swapping flag */
1133 __volatile__
long interrupt_flag
; /**< Interruption handler flag */
1134 __volatile__
long dma_flag
; /**< DMA dispatch flag */
1135 wait_queue_head_t context_wait
; /**< Processes waiting on ctx switch */
1136 int last_checked
; /**< Last context checked for DMA */
1137 int last_context
; /**< Last current context */
1138 unsigned long last_switch
; /**< jiffies at last context switch */
1141 struct work_struct work
;
1142 /** \name VBLANK IRQ support */
1146 * At load time, disabling the vblank interrupt won't be allowed since
1147 * old clients may not call the modeset ioctl and therefore misbehave.
1148 * Once the modeset ioctl *has* been called though, we can safely
1149 * disable them when unused.
1151 int vblank_disable_allowed
;
1153 wait_queue_head_t
*vbl_queue
; /**< VBLANK wait queue */
1154 atomic_t
*_vblank_count
; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1155 struct timeval
*_vblank_time
; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1156 spinlock_t vblank_time_lock
; /**< Protects vblank count and time updates during vblank enable/disable */
1157 spinlock_t vbl_lock
;
1158 atomic_t
*vblank_refcount
; /* number of users of vblank interruptsper crtc */
1159 u32
*last_vblank
; /* protected by dev->vbl_lock, used */
1160 /* for wraparound handling */
1161 int *vblank_enabled
; /* so we don't call enable more than
1163 int *vblank_inmodeset
; /* Display driver is setting mode */
1164 u32
*last_vblank_wait
; /* Last vblank seqno waited per CRTC */
1165 struct timer_list vblank_disable_timer
;
1167 u32 max_vblank_count
; /**< size of vblank counter register */
1172 struct list_head vblank_event_list
;
1173 spinlock_t event_lock
;
1179 struct fasync_struct
*buf_async
;/**< Processes waiting for SIGIO */
1180 wait_queue_head_t buf_readers
; /**< Processes waiting to read */
1181 wait_queue_head_t buf_writers
; /**< Processes waiting to ctx switch */
1183 struct drm_agp_head
*agp
; /**< AGP data */
1185 struct device
*dev
; /**< Device structure */
1186 struct pci_dev
*pdev
; /**< PCI device structure */
1187 int pci_vendor
; /**< PCI vendor id */
1188 int pci_device
; /**< PCI device id */
1190 struct pci_controller
*hose
;
1193 struct platform_device
*platformdev
; /**< Platform device struture */
1194 struct usb_device
*usbdev
;
1196 struct drm_sg_mem
*sg
; /**< Scatter gather memory */
1197 unsigned int num_crtcs
; /**< Number of CRTCs on this device */
1198 void *dev_private
; /**< device private data */
1200 struct address_space
*dev_mapping
;
1201 struct drm_sigdata sigdata
; /**< For block_all_signals */
1204 struct drm_driver
*driver
;
1205 struct drm_local_map
*agp_buffer_map
;
1206 unsigned int agp_buffer_token
;
1207 struct drm_minor
*control
; /**< Control node for card */
1208 struct drm_minor
*primary
; /**< render type primary screen head */
1210 struct drm_mode_config mode_config
; /**< Current mode config */
1212 /** \name GEM information */
1214 spinlock_t object_name_lock
;
1215 struct idr object_name_idr
;
1217 int switch_power_state
;
1219 atomic_t unplugged
; /* device has been unplugged or gone away */
1222 #define DRM_SWITCH_POWER_ON 0
1223 #define DRM_SWITCH_POWER_OFF 1
1224 #define DRM_SWITCH_POWER_CHANGING 2
1226 static __inline__
int drm_core_check_feature(struct drm_device
*dev
,
1229 return ((dev
->driver
->driver_features
& feature
) ? 1 : 0);
1232 static inline int drm_dev_to_irq(struct drm_device
*dev
)
1234 return dev
->driver
->bus
->get_irq(dev
);
1239 static inline int drm_core_has_AGP(struct drm_device
*dev
)
1241 return drm_core_check_feature(dev
, DRIVER_USE_AGP
);
1244 #define drm_core_has_AGP(dev) (0)
1248 static inline int drm_core_has_MTRR(struct drm_device
*dev
)
1250 return drm_core_check_feature(dev
, DRIVER_USE_MTRR
);
1253 #define DRM_MTRR_WC MTRR_TYPE_WRCOMB
1255 static inline int drm_mtrr_add(unsigned long offset
, unsigned long size
,
1258 return mtrr_add(offset
, size
, flags
, 1);
1261 static inline int drm_mtrr_del(int handle
, unsigned long offset
,
1262 unsigned long size
, unsigned int flags
)
1264 return mtrr_del(handle
, offset
, size
);
1268 #define drm_core_has_MTRR(dev) (0)
1270 #define DRM_MTRR_WC 0
1272 static inline int drm_mtrr_add(unsigned long offset
, unsigned long size
,
1278 static inline int drm_mtrr_del(int handle
, unsigned long offset
,
1279 unsigned long size
, unsigned int flags
)
1285 static inline void drm_device_set_unplugged(struct drm_device
*dev
)
1288 atomic_set(&dev
->unplugged
, 1);
1291 static inline int drm_device_is_unplugged(struct drm_device
*dev
)
1293 int ret
= atomic_read(&dev
->unplugged
);
1298 static inline bool drm_modeset_is_locked(struct drm_device
*dev
)
1300 return mutex_is_locked(&dev
->mode_config
.mutex
);
1303 /******************************************************************/
1304 /** \name Internal function definitions */
1307 /* Driver support (drm_drv.h) */
1308 extern long drm_ioctl(struct file
*filp
,
1309 unsigned int cmd
, unsigned long arg
);
1310 extern long drm_compat_ioctl(struct file
*filp
,
1311 unsigned int cmd
, unsigned long arg
);
1312 extern int drm_lastclose(struct drm_device
*dev
);
1314 /* Device support (drm_fops.h) */
1315 extern struct mutex drm_global_mutex
;
1316 extern int drm_open(struct inode
*inode
, struct file
*filp
);
1317 extern int drm_stub_open(struct inode
*inode
, struct file
*filp
);
1318 extern int drm_fasync(int fd
, struct file
*filp
, int on
);
1319 extern ssize_t
drm_read(struct file
*filp
, char __user
*buffer
,
1320 size_t count
, loff_t
*offset
);
1321 extern int drm_release(struct inode
*inode
, struct file
*filp
);
1323 /* Mapping support (drm_vm.h) */
1324 extern int drm_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1325 extern int drm_mmap_locked(struct file
*filp
, struct vm_area_struct
*vma
);
1326 extern void drm_vm_open_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1327 extern void drm_vm_close_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1328 extern unsigned int drm_poll(struct file
*filp
, struct poll_table_struct
*wait
);
1330 /* Memory management support (drm_memory.h) */
1331 #include <drm/drm_memory.h>
1332 extern void drm_free_agp(DRM_AGP_MEM
* handle
, int pages
);
1333 extern int drm_bind_agp(DRM_AGP_MEM
* handle
, unsigned int start
);
1334 extern DRM_AGP_MEM
*drm_agp_bind_pages(struct drm_device
*dev
,
1335 struct page
**pages
,
1336 unsigned long num_pages
,
1337 uint32_t gtt_offset
,
1339 extern int drm_unbind_agp(DRM_AGP_MEM
* handle
);
1341 /* Misc. IOCTL support (drm_ioctl.h) */
1342 extern int drm_irq_by_busid(struct drm_device
*dev
, void *data
,
1343 struct drm_file
*file_priv
);
1344 extern int drm_getunique(struct drm_device
*dev
, void *data
,
1345 struct drm_file
*file_priv
);
1346 extern int drm_setunique(struct drm_device
*dev
, void *data
,
1347 struct drm_file
*file_priv
);
1348 extern int drm_getmap(struct drm_device
*dev
, void *data
,
1349 struct drm_file
*file_priv
);
1350 extern int drm_getclient(struct drm_device
*dev
, void *data
,
1351 struct drm_file
*file_priv
);
1352 extern int drm_getstats(struct drm_device
*dev
, void *data
,
1353 struct drm_file
*file_priv
);
1354 extern int drm_getcap(struct drm_device
*dev
, void *data
,
1355 struct drm_file
*file_priv
);
1356 extern int drm_setversion(struct drm_device
*dev
, void *data
,
1357 struct drm_file
*file_priv
);
1358 extern int drm_noop(struct drm_device
*dev
, void *data
,
1359 struct drm_file
*file_priv
);
1361 /* Context IOCTL support (drm_context.h) */
1362 extern int drm_resctx(struct drm_device
*dev
, void *data
,
1363 struct drm_file
*file_priv
);
1364 extern int drm_addctx(struct drm_device
*dev
, void *data
,
1365 struct drm_file
*file_priv
);
1366 extern int drm_modctx(struct drm_device
*dev
, void *data
,
1367 struct drm_file
*file_priv
);
1368 extern int drm_getctx(struct drm_device
*dev
, void *data
,
1369 struct drm_file
*file_priv
);
1370 extern int drm_switchctx(struct drm_device
*dev
, void *data
,
1371 struct drm_file
*file_priv
);
1372 extern int drm_newctx(struct drm_device
*dev
, void *data
,
1373 struct drm_file
*file_priv
);
1374 extern int drm_rmctx(struct drm_device
*dev
, void *data
,
1375 struct drm_file
*file_priv
);
1377 extern int drm_ctxbitmap_init(struct drm_device
*dev
);
1378 extern void drm_ctxbitmap_cleanup(struct drm_device
*dev
);
1379 extern void drm_ctxbitmap_free(struct drm_device
*dev
, int ctx_handle
);
1381 extern int drm_setsareactx(struct drm_device
*dev
, void *data
,
1382 struct drm_file
*file_priv
);
1383 extern int drm_getsareactx(struct drm_device
*dev
, void *data
,
1384 struct drm_file
*file_priv
);
1386 /* Authentication IOCTL support (drm_auth.h) */
1387 extern int drm_getmagic(struct drm_device
*dev
, void *data
,
1388 struct drm_file
*file_priv
);
1389 extern int drm_authmagic(struct drm_device
*dev
, void *data
,
1390 struct drm_file
*file_priv
);
1391 extern int drm_remove_magic(struct drm_master
*master
, drm_magic_t magic
);
1393 /* Cache management (drm_cache.c) */
1394 void drm_clflush_pages(struct page
*pages
[], unsigned long num_pages
);
1395 void drm_clflush_sg(struct sg_table
*st
);
1396 void drm_clflush_virt_range(char *addr
, unsigned long length
);
1398 /* Locking IOCTL support (drm_lock.h) */
1399 extern int drm_lock(struct drm_device
*dev
, void *data
,
1400 struct drm_file
*file_priv
);
1401 extern int drm_unlock(struct drm_device
*dev
, void *data
,
1402 struct drm_file
*file_priv
);
1403 extern int drm_lock_free(struct drm_lock_data
*lock_data
, unsigned int context
);
1404 extern void drm_idlelock_take(struct drm_lock_data
*lock_data
);
1405 extern void drm_idlelock_release(struct drm_lock_data
*lock_data
);
1408 * These are exported to drivers so that they can implement fencing using
1409 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1412 extern int drm_i_have_hw_lock(struct drm_device
*dev
, struct drm_file
*file_priv
);
1414 /* Buffer management support (drm_bufs.h) */
1415 extern int drm_addbufs_agp(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1416 extern int drm_addbufs_pci(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1417 extern int drm_addmap(struct drm_device
*dev
, resource_size_t offset
,
1418 unsigned int size
, enum drm_map_type type
,
1419 enum drm_map_flags flags
, struct drm_local_map
**map_ptr
);
1420 extern int drm_addmap_ioctl(struct drm_device
*dev
, void *data
,
1421 struct drm_file
*file_priv
);
1422 extern int drm_rmmap(struct drm_device
*dev
, struct drm_local_map
*map
);
1423 extern int drm_rmmap_locked(struct drm_device
*dev
, struct drm_local_map
*map
);
1424 extern int drm_rmmap_ioctl(struct drm_device
*dev
, void *data
,
1425 struct drm_file
*file_priv
);
1426 extern int drm_addbufs(struct drm_device
*dev
, void *data
,
1427 struct drm_file
*file_priv
);
1428 extern int drm_infobufs(struct drm_device
*dev
, void *data
,
1429 struct drm_file
*file_priv
);
1430 extern int drm_markbufs(struct drm_device
*dev
, void *data
,
1431 struct drm_file
*file_priv
);
1432 extern int drm_freebufs(struct drm_device
*dev
, void *data
,
1433 struct drm_file
*file_priv
);
1434 extern int drm_mapbufs(struct drm_device
*dev
, void *data
,
1435 struct drm_file
*file_priv
);
1436 extern int drm_order(unsigned long size
);
1438 /* DMA support (drm_dma.h) */
1439 extern int drm_dma_setup(struct drm_device
*dev
);
1440 extern void drm_dma_takedown(struct drm_device
*dev
);
1441 extern void drm_free_buffer(struct drm_device
*dev
, struct drm_buf
* buf
);
1442 extern void drm_core_reclaim_buffers(struct drm_device
*dev
,
1443 struct drm_file
*filp
);
1445 /* IRQ support (drm_irq.h) */
1446 extern int drm_control(struct drm_device
*dev
, void *data
,
1447 struct drm_file
*file_priv
);
1448 extern int drm_irq_install(struct drm_device
*dev
);
1449 extern int drm_irq_uninstall(struct drm_device
*dev
);
1451 extern int drm_vblank_init(struct drm_device
*dev
, int num_crtcs
);
1452 extern int drm_wait_vblank(struct drm_device
*dev
, void *data
,
1453 struct drm_file
*filp
);
1454 extern int drm_vblank_wait(struct drm_device
*dev
, unsigned int *vbl_seq
);
1455 extern u32
drm_vblank_count(struct drm_device
*dev
, int crtc
);
1456 extern u32
drm_vblank_count_and_time(struct drm_device
*dev
, int crtc
,
1457 struct timeval
*vblanktime
);
1458 extern void drm_send_vblank_event(struct drm_device
*dev
, int crtc
,
1459 struct drm_pending_vblank_event
*e
);
1460 extern bool drm_handle_vblank(struct drm_device
*dev
, int crtc
);
1461 extern int drm_vblank_get(struct drm_device
*dev
, int crtc
);
1462 extern void drm_vblank_put(struct drm_device
*dev
, int crtc
);
1463 extern void drm_vblank_off(struct drm_device
*dev
, int crtc
);
1464 extern void drm_vblank_cleanup(struct drm_device
*dev
);
1465 extern u32
drm_get_last_vbltimestamp(struct drm_device
*dev
, int crtc
,
1466 struct timeval
*tvblank
, unsigned flags
);
1467 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device
*dev
,
1468 int crtc
, int *max_error
,
1469 struct timeval
*vblank_time
,
1471 struct drm_crtc
*refcrtc
);
1472 extern void drm_calc_timestamping_constants(struct drm_crtc
*crtc
);
1475 drm_mode_parse_command_line_for_connector(const char *mode_option
,
1476 struct drm_connector
*connector
,
1477 struct drm_cmdline_mode
*mode
);
1479 extern struct drm_display_mode
*
1480 drm_mode_create_from_cmdline_mode(struct drm_device
*dev
,
1481 struct drm_cmdline_mode
*cmd
);
1483 extern int drm_display_mode_from_videomode(const struct videomode
*vm
,
1484 struct drm_display_mode
*dmode
);
1485 extern int of_get_drm_display_mode(struct device_node
*np
,
1486 struct drm_display_mode
*dmode
,
1489 /* Modesetting support */
1490 extern void drm_vblank_pre_modeset(struct drm_device
*dev
, int crtc
);
1491 extern void drm_vblank_post_modeset(struct drm_device
*dev
, int crtc
);
1492 extern int drm_modeset_ctl(struct drm_device
*dev
, void *data
,
1493 struct drm_file
*file_priv
);
1495 /* AGP/GART support (drm_agpsupport.h) */
1496 extern struct drm_agp_head
*drm_agp_init(struct drm_device
*dev
);
1497 extern int drm_agp_acquire(struct drm_device
*dev
);
1498 extern int drm_agp_acquire_ioctl(struct drm_device
*dev
, void *data
,
1499 struct drm_file
*file_priv
);
1500 extern int drm_agp_release(struct drm_device
*dev
);
1501 extern int drm_agp_release_ioctl(struct drm_device
*dev
, void *data
,
1502 struct drm_file
*file_priv
);
1503 extern int drm_agp_enable(struct drm_device
*dev
, struct drm_agp_mode mode
);
1504 extern int drm_agp_enable_ioctl(struct drm_device
*dev
, void *data
,
1505 struct drm_file
*file_priv
);
1506 extern int drm_agp_info(struct drm_device
*dev
, struct drm_agp_info
*info
);
1507 extern int drm_agp_info_ioctl(struct drm_device
*dev
, void *data
,
1508 struct drm_file
*file_priv
);
1509 extern int drm_agp_alloc(struct drm_device
*dev
, struct drm_agp_buffer
*request
);
1510 extern int drm_agp_alloc_ioctl(struct drm_device
*dev
, void *data
,
1511 struct drm_file
*file_priv
);
1512 extern int drm_agp_free(struct drm_device
*dev
, struct drm_agp_buffer
*request
);
1513 extern int drm_agp_free_ioctl(struct drm_device
*dev
, void *data
,
1514 struct drm_file
*file_priv
);
1515 extern int drm_agp_unbind(struct drm_device
*dev
, struct drm_agp_binding
*request
);
1516 extern int drm_agp_unbind_ioctl(struct drm_device
*dev
, void *data
,
1517 struct drm_file
*file_priv
);
1518 extern int drm_agp_bind(struct drm_device
*dev
, struct drm_agp_binding
*request
);
1519 extern int drm_agp_bind_ioctl(struct drm_device
*dev
, void *data
,
1520 struct drm_file
*file_priv
);
1522 /* Stub support (drm_stub.h) */
1523 extern int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
1524 struct drm_file
*file_priv
);
1525 extern int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
1526 struct drm_file
*file_priv
);
1527 struct drm_master
*drm_master_create(struct drm_minor
*minor
);
1528 extern struct drm_master
*drm_master_get(struct drm_master
*master
);
1529 extern void drm_master_put(struct drm_master
**master
);
1531 extern void drm_put_dev(struct drm_device
*dev
);
1532 extern int drm_put_minor(struct drm_minor
**minor
);
1533 extern void drm_unplug_dev(struct drm_device
*dev
);
1534 extern unsigned int drm_debug
;
1536 extern unsigned int drm_vblank_offdelay
;
1537 extern unsigned int drm_timestamp_precision
;
1538 extern unsigned int drm_timestamp_monotonic
;
1540 extern struct class *drm_class
;
1541 extern struct proc_dir_entry
*drm_proc_root
;
1542 extern struct dentry
*drm_debugfs_root
;
1544 extern struct idr drm_minors_idr
;
1546 extern struct drm_local_map
*drm_getsarea(struct drm_device
*dev
);
1548 /* Proc support (drm_proc.h) */
1549 extern int drm_proc_init(struct drm_minor
*minor
, struct proc_dir_entry
*root
);
1550 extern int drm_proc_cleanup(struct drm_minor
*minor
, struct proc_dir_entry
*root
);
1552 /* Debugfs support */
1553 #if defined(CONFIG_DEBUG_FS)
1554 extern int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1555 struct dentry
*root
);
1556 extern int drm_debugfs_create_files(struct drm_info_list
*files
, int count
,
1557 struct dentry
*root
, struct drm_minor
*minor
);
1558 extern int drm_debugfs_remove_files(struct drm_info_list
*files
, int count
,
1559 struct drm_minor
*minor
);
1560 extern int drm_debugfs_cleanup(struct drm_minor
*minor
);
1563 /* Info file support */
1564 extern int drm_name_info(struct seq_file
*m
, void *data
);
1565 extern int drm_vm_info(struct seq_file
*m
, void *data
);
1566 extern int drm_bufs_info(struct seq_file
*m
, void *data
);
1567 extern int drm_vblank_info(struct seq_file
*m
, void *data
);
1568 extern int drm_clients_info(struct seq_file
*m
, void* data
);
1569 extern int drm_gem_name_info(struct seq_file
*m
, void *data
);
1572 extern struct dma_buf
*drm_gem_prime_export(struct drm_device
*dev
,
1573 struct drm_gem_object
*obj
, int flags
);
1574 extern int drm_gem_prime_handle_to_fd(struct drm_device
*dev
,
1575 struct drm_file
*file_priv
, uint32_t handle
, uint32_t flags
,
1577 extern struct drm_gem_object
*drm_gem_prime_import(struct drm_device
*dev
,
1578 struct dma_buf
*dma_buf
);
1579 extern int drm_gem_prime_fd_to_handle(struct drm_device
*dev
,
1580 struct drm_file
*file_priv
, int prime_fd
, uint32_t *handle
);
1582 extern int drm_prime_handle_to_fd_ioctl(struct drm_device
*dev
, void *data
,
1583 struct drm_file
*file_priv
);
1584 extern int drm_prime_fd_to_handle_ioctl(struct drm_device
*dev
, void *data
,
1585 struct drm_file
*file_priv
);
1587 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table
*sgt
, struct page
**pages
,
1588 dma_addr_t
*addrs
, int max_pages
);
1589 extern struct sg_table
*drm_prime_pages_to_sg(struct page
**pages
, int nr_pages
);
1590 extern void drm_prime_gem_destroy(struct drm_gem_object
*obj
, struct sg_table
*sg
);
1593 void drm_prime_init_file_private(struct drm_prime_file_private
*prime_fpriv
);
1594 void drm_prime_destroy_file_private(struct drm_prime_file_private
*prime_fpriv
);
1595 int drm_prime_lookup_buf_handle(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
, uint32_t *handle
);
1596 void drm_prime_remove_buf_handle(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
);
1598 int drm_prime_add_dma_buf(struct drm_device
*dev
, struct drm_gem_object
*obj
);
1599 int drm_prime_lookup_obj(struct drm_device
*dev
, struct dma_buf
*buf
,
1600 struct drm_gem_object
**obj
);
1603 extern int drm_vma_info(struct seq_file
*m
, void *data
);
1606 /* Scatter Gather Support (drm_scatter.h) */
1607 extern void drm_sg_cleanup(struct drm_sg_mem
* entry
);
1608 extern int drm_sg_alloc_ioctl(struct drm_device
*dev
, void *data
,
1609 struct drm_file
*file_priv
);
1610 extern int drm_sg_alloc(struct drm_device
*dev
, struct drm_scatter_gather
* request
);
1611 extern int drm_sg_free(struct drm_device
*dev
, void *data
,
1612 struct drm_file
*file_priv
);
1614 /* ATI PCIGART support (ati_pcigart.h) */
1615 extern int drm_ati_pcigart_init(struct drm_device
*dev
,
1616 struct drm_ati_pcigart_info
* gart_info
);
1617 extern int drm_ati_pcigart_cleanup(struct drm_device
*dev
,
1618 struct drm_ati_pcigart_info
* gart_info
);
1620 extern drm_dma_handle_t
*drm_pci_alloc(struct drm_device
*dev
, size_t size
,
1622 extern void __drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1623 extern void drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1625 /* sysfs support (drm_sysfs.c) */
1626 struct drm_sysfs_class
;
1627 extern struct class *drm_sysfs_create(struct module
*owner
, char *name
);
1628 extern void drm_sysfs_destroy(void);
1629 extern int drm_sysfs_device_add(struct drm_minor
*minor
);
1630 extern void drm_sysfs_hotplug_event(struct drm_device
*dev
);
1631 extern void drm_sysfs_device_remove(struct drm_minor
*minor
);
1632 extern char *drm_get_connector_status_name(enum drm_connector_status status
);
1633 extern int drm_sysfs_connector_add(struct drm_connector
*connector
);
1634 extern void drm_sysfs_connector_remove(struct drm_connector
*connector
);
1636 /* Graphics Execution Manager library functions (drm_gem.c) */
1637 int drm_gem_init(struct drm_device
*dev
);
1638 void drm_gem_destroy(struct drm_device
*dev
);
1639 void drm_gem_object_release(struct drm_gem_object
*obj
);
1640 void drm_gem_object_free(struct kref
*kref
);
1641 struct drm_gem_object
*drm_gem_object_alloc(struct drm_device
*dev
,
1643 int drm_gem_object_init(struct drm_device
*dev
,
1644 struct drm_gem_object
*obj
, size_t size
);
1645 int drm_gem_private_object_init(struct drm_device
*dev
,
1646 struct drm_gem_object
*obj
, size_t size
);
1647 void drm_gem_object_handle_free(struct drm_gem_object
*obj
);
1648 void drm_gem_vm_open(struct vm_area_struct
*vma
);
1649 void drm_gem_vm_close(struct vm_area_struct
*vma
);
1650 int drm_gem_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1652 #include <drm/drm_global.h>
1655 drm_gem_object_reference(struct drm_gem_object
*obj
)
1657 kref_get(&obj
->refcount
);
1661 drm_gem_object_unreference(struct drm_gem_object
*obj
)
1664 kref_put(&obj
->refcount
, drm_gem_object_free
);
1668 drm_gem_object_unreference_unlocked(struct drm_gem_object
*obj
)
1671 struct drm_device
*dev
= obj
->dev
;
1672 mutex_lock(&dev
->struct_mutex
);
1673 kref_put(&obj
->refcount
, drm_gem_object_free
);
1674 mutex_unlock(&dev
->struct_mutex
);
1678 int drm_gem_handle_create(struct drm_file
*file_priv
,
1679 struct drm_gem_object
*obj
,
1681 int drm_gem_handle_delete(struct drm_file
*filp
, u32 handle
);
1684 drm_gem_object_handle_reference(struct drm_gem_object
*obj
)
1686 drm_gem_object_reference(obj
);
1687 atomic_inc(&obj
->handle_count
);
1691 drm_gem_object_handle_unreference(struct drm_gem_object
*obj
)
1696 if (atomic_read(&obj
->handle_count
) == 0)
1699 * Must bump handle count first as this may be the last
1700 * ref, in which case the object would disappear before we
1701 * checked for a name
1703 if (atomic_dec_and_test(&obj
->handle_count
))
1704 drm_gem_object_handle_free(obj
);
1705 drm_gem_object_unreference(obj
);
1709 drm_gem_object_handle_unreference_unlocked(struct drm_gem_object
*obj
)
1714 if (atomic_read(&obj
->handle_count
) == 0)
1718 * Must bump handle count first as this may be the last
1719 * ref, in which case the object would disappear before we
1720 * checked for a name
1723 if (atomic_dec_and_test(&obj
->handle_count
))
1724 drm_gem_object_handle_free(obj
);
1725 drm_gem_object_unreference_unlocked(obj
);
1728 void drm_gem_free_mmap_offset(struct drm_gem_object
*obj
);
1729 int drm_gem_create_mmap_offset(struct drm_gem_object
*obj
);
1731 struct drm_gem_object
*drm_gem_object_lookup(struct drm_device
*dev
,
1732 struct drm_file
*filp
,
1734 int drm_gem_close_ioctl(struct drm_device
*dev
, void *data
,
1735 struct drm_file
*file_priv
);
1736 int drm_gem_flink_ioctl(struct drm_device
*dev
, void *data
,
1737 struct drm_file
*file_priv
);
1738 int drm_gem_open_ioctl(struct drm_device
*dev
, void *data
,
1739 struct drm_file
*file_priv
);
1740 void drm_gem_open(struct drm_device
*dev
, struct drm_file
*file_private
);
1741 void drm_gem_release(struct drm_device
*dev
, struct drm_file
*file_private
);
1743 extern void drm_core_ioremap(struct drm_local_map
*map
, struct drm_device
*dev
);
1744 extern void drm_core_ioremap_wc(struct drm_local_map
*map
, struct drm_device
*dev
);
1745 extern void drm_core_ioremapfree(struct drm_local_map
*map
, struct drm_device
*dev
);
1747 static __inline__
struct drm_local_map
*drm_core_findmap(struct drm_device
*dev
,
1750 struct drm_map_list
*_entry
;
1751 list_for_each_entry(_entry
, &dev
->maplist
, head
)
1752 if (_entry
->user_token
== token
)
1757 static __inline__
void drm_core_dropmap(struct drm_local_map
*map
)
1761 #include <drm/drm_mem_util.h>
1763 extern int drm_fill_in_dev(struct drm_device
*dev
,
1764 const struct pci_device_id
*ent
,
1765 struct drm_driver
*driver
);
1766 int drm_get_minor(struct drm_device
*dev
, struct drm_minor
**minor
, int type
);
1770 static __inline__
int drm_pci_device_is_agp(struct drm_device
*dev
)
1772 if (dev
->driver
->device_is_agp
!= NULL
) {
1773 int err
= (*dev
->driver
->device_is_agp
) (dev
);
1780 return pci_find_capability(dev
->pdev
, PCI_CAP_ID_AGP
);
1783 extern int drm_pci_init(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1784 extern void drm_pci_exit(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1785 extern int drm_get_pci_dev(struct pci_dev
*pdev
,
1786 const struct pci_device_id
*ent
,
1787 struct drm_driver
*driver
);
1789 #define DRM_PCIE_SPEED_25 1
1790 #define DRM_PCIE_SPEED_50 2
1791 #define DRM_PCIE_SPEED_80 4
1793 extern int drm_pcie_get_speed_cap_mask(struct drm_device
*dev
, u32
*speed_mask
);
1795 /* platform section */
1796 extern int drm_platform_init(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1797 extern void drm_platform_exit(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1799 extern int drm_get_platform_dev(struct platform_device
*pdev
,
1800 struct drm_driver
*driver
);
1802 /* returns true if currently okay to sleep */
1803 static __inline__
bool drm_can_sleep(void)
1805 if (in_atomic() || in_dbg_master() || irqs_disabled())
1810 #endif /* __KERNEL__ */