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))
90 #include <drm/drm_os_linux.h>
91 #include <drm/drm_hashtab.h>
92 #include <drm/drm_mm.h>
94 #define DRM_UT_CORE 0x01
95 #define DRM_UT_DRIVER 0x02
96 #define DRM_UT_KMS 0x04
97 #define DRM_UT_PRIME 0x08
99 * Three debug levels are defined.
100 * drm_core, drm_driver, drm_kms
101 * drm_core level can be used in the generic drm code. For example:
102 * drm_ioctl, drm_mm, drm_memory
103 * The macro definition of DRM_DEBUG is used.
104 * DRM_DEBUG(fmt, args...)
105 * The debug info by using the DRM_DEBUG can be obtained by adding
106 * the boot option of "drm.debug=1".
108 * drm_driver level can be used in the specific drm driver. It is used
109 * to add the debug info related with the drm driver. For example:
110 * i915_drv, i915_dma, i915_gem, radeon_drv,
111 * The macro definition of DRM_DEBUG_DRIVER can be used.
112 * DRM_DEBUG_DRIVER(fmt, args...)
113 * The debug info by using the DRM_DEBUG_DRIVER can be obtained by
114 * adding the boot option of "drm.debug=0x02"
116 * drm_kms level can be used in the KMS code related with specific drm driver.
117 * It is used to add the debug info related with KMS mode. For example:
118 * the connector/crtc ,
119 * The macro definition of DRM_DEBUG_KMS can be used.
120 * DRM_DEBUG_KMS(fmt, args...)
121 * The debug info by using the DRM_DEBUG_KMS can be obtained by
122 * adding the boot option of "drm.debug=0x04"
124 * If we add the boot option of "drm.debug=0x06", we can get the debug info by
125 * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
126 * If we add the boot option of "drm.debug=0x05", we can get the debug info by
127 * using the DRM_DEBUG_KMS and DRM_DEBUG.
130 extern __printf(4, 5)
131 void drm_ut_debug_printk(unsigned int request_level,
133 const char *function_name,
134 const char *format, ...);
135 extern __printf(2, 3)
136 int drm_err(const char *func, const char *format, ...);
138 /***********************************************************************/
139 /** \name DRM template customization defaults */
142 /* driver capabilities and requirements mask */
143 #define DRIVER_USE_AGP 0x1
144 #define DRIVER_REQUIRE_AGP 0x2
145 #define DRIVER_USE_MTRR 0x4
146 #define DRIVER_PCI_DMA 0x8
147 #define DRIVER_SG 0x10
148 #define DRIVER_HAVE_DMA 0x20
149 #define DRIVER_HAVE_IRQ 0x40
150 #define DRIVER_IRQ_SHARED 0x80
151 #define DRIVER_IRQ_VBL 0x100
152 #define DRIVER_DMA_QUEUE 0x200
153 #define DRIVER_FB_DMA 0x400
154 #define DRIVER_IRQ_VBL2 0x800
155 #define DRIVER_GEM 0x1000
156 #define DRIVER_MODESET 0x2000
157 #define DRIVER_PRIME 0x4000
159 #define DRIVER_BUS_PCI 0x1
160 #define DRIVER_BUS_PLATFORM 0x2
161 #define DRIVER_BUS_USB 0x3
163 /***********************************************************************/
164 /** \name Begin the DRM... */
167 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
168 also include looping detection. */
170 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
171 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
172 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
173 #define DRM_LOOPING_LIMIT 5000000
174 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
175 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
177 #define DRM_FLAG_DEBUG 0x01
179 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
180 #define DRM_MAP_HASH_OFFSET 0x10000000
184 /***********************************************************************/
185 /** \name Macros to make printk easier */
191 * \param fmt printf() like format string.
192 * \param arg arguments
194 #define DRM_ERROR(fmt, ...) \
195 drm_err(__func__, fmt, ##__VA_ARGS__)
197 #define DRM_INFO(fmt, ...) \
198 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
203 * \param fmt printf() like format string.
204 * \param arg arguments
207 #define DRM_DEBUG(fmt, args...) \
209 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
210 __func__, fmt, ##args); \
213 #define DRM_DEBUG_DRIVER(fmt, args...) \
215 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
216 __func__, fmt, ##args); \
218 #define DRM_DEBUG_KMS(fmt, args...) \
220 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
221 __func__, fmt, ##args); \
223 #define DRM_DEBUG_PRIME(fmt, args...) \
225 drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME, \
226 __func__, fmt, ##args); \
228 #define DRM_LOG(fmt, args...) \
230 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
231 NULL, fmt, ##args); \
233 #define DRM_LOG_KMS(fmt, args...) \
235 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
236 NULL, fmt, ##args); \
238 #define DRM_LOG_MODE(fmt, args...) \
240 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
241 NULL, fmt, ##args); \
243 #define DRM_LOG_DRIVER(fmt, args...) \
245 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
246 NULL, fmt, ##args); \
249 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
250 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
251 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
252 #define DRM_DEBUG(fmt, arg...) do { } while (0)
253 #define DRM_LOG(fmt, arg...) do { } while (0)
254 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
255 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
256 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
262 /***********************************************************************/
263 /** \name Internal types and structures */
266 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
268 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
269 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
271 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
274 * Test that the hardware lock is held by the caller, returning otherwise.
276 * \param dev DRM device.
277 * \param filp file pointer of the caller.
279 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
281 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
282 _file_priv->master->lock.file_priv != _file_priv) { \
283 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
284 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
285 _file_priv->master->lock.file_priv, _file_priv); \
291 * Ioctl function type.
293 * \param inode device inode.
294 * \param file_priv DRM file private pointer.
295 * \param cmd command.
296 * \param arg argument.
298 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
299 struct drm_file *file_priv);
301 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
304 #define DRM_IOCTL_NR(n) _IOC_NR(n)
305 #define DRM_MAJOR 226
308 #define DRM_MASTER 0x2
309 #define DRM_ROOT_ONLY 0x4
310 #define DRM_CONTROL_ALLOW 0x8
311 #define DRM_UNLOCKED 0x10
313 struct drm_ioctl_desc {
317 unsigned int cmd_drv;
321 * Creates a driver or general drm_ioctl_desc array entry for the given
322 * ioctl, for use by drm_ioctl().
325 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
326 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl}
328 struct drm_magic_entry {
329 struct list_head head;
330 struct drm_hash_item hash_item;
331 struct drm_file *priv;
334 struct drm_vma_entry {
335 struct list_head head;
336 struct vm_area_struct *vma;
344 int idx; /**< Index into master buflist */
345 int total; /**< Buffer size */
346 int order; /**< log-base-2(total) */
347 int used; /**< Amount of buffer in use (for DMA) */
348 unsigned long offset; /**< Byte offset (used internally) */
349 void *address; /**< Address of buffer */
350 unsigned long bus_address; /**< Bus address of buffer */
351 struct drm_buf *next; /**< Kernel-only: used for free list */
352 __volatile__ int waiting; /**< On kernel DMA queue */
353 __volatile__ int pending; /**< On hardware DMA queue */
354 struct drm_file *file_priv; /**< Private of holding file descr */
355 int context; /**< Kernel queue for this buffer */
356 int while_locked; /**< Dispatch this buffer while locked */
364 } list; /**< Which list we're on */
366 int dev_priv_size; /**< Size of buffer private storage */
367 void *dev_private; /**< Per-buffer private storage */
370 /** bufs is one longer than it has to be */
371 struct drm_waitlist {
372 int count; /**< Number of possible buffers */
373 struct drm_buf **bufs; /**< List of pointers to buffers */
374 struct drm_buf **rp; /**< Read pointer */
375 struct drm_buf **wp; /**< Write pointer */
376 struct drm_buf **end; /**< End pointer */
377 spinlock_t read_lock;
378 spinlock_t write_lock;
381 struct drm_freelist {
382 int initialized; /**< Freelist in use */
383 atomic_t count; /**< Number of free buffers */
384 struct drm_buf *next; /**< End pointer */
386 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
387 int low_mark; /**< Low water mark */
388 int high_mark; /**< High water mark */
389 atomic_t wfh; /**< If waiting for high mark */
393 typedef struct drm_dma_handle {
400 * Buffer entry. There is one of this for each buffer size order.
402 struct drm_buf_entry {
403 int buf_size; /**< size */
404 int buf_count; /**< number of buffers */
405 struct drm_buf *buflist; /**< buffer list */
408 struct drm_dma_handle **seglist;
410 struct drm_freelist freelist;
413 /* Event queued up for userspace to read */
414 struct drm_pending_event {
415 struct drm_event *event;
416 struct list_head link;
417 struct drm_file *file_priv;
418 pid_t pid; /* pid of requester, no guarantee it's valid by the time
419 we deliver the event, for tracing only */
420 void (*destroy)(struct drm_pending_event *event);
423 /* initial implementaton using a linked list - todo hashtab */
424 struct drm_prime_file_private {
425 struct list_head head;
429 /** File private data */
435 unsigned long ioctl_count;
436 struct list_head lhead;
437 struct drm_minor *minor;
438 unsigned long lock_count;
440 /** Mapping of mm object handles to object pointers. */
441 struct idr object_idr;
442 /** Lock for synchronization of access to object_idr. */
443 spinlock_t table_lock;
448 int is_master; /* this file private is a master for a minor */
449 struct drm_master *master; /* master this node is currently associated with
450 N.B. not always minor->master */
451 struct list_head fbs;
453 wait_queue_head_t event_wait;
454 struct list_head event_list;
457 struct drm_prime_file_private prime;
462 atomic_t use_count; /**< Outstanding uses (+1) */
463 atomic_t finalization; /**< Finalization in progress */
464 atomic_t block_count; /**< Count of processes waiting */
465 atomic_t block_read; /**< Queue blocked for reads */
466 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
467 atomic_t block_write; /**< Queue blocked for writes */
468 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
469 atomic_t total_queued; /**< Total queued statistic */
470 atomic_t total_flushed; /**< Total flushes statistic */
471 atomic_t total_locks; /**< Total locks statistics */
472 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
473 struct drm_waitlist waitlist; /**< Pending buffers */
474 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
480 struct drm_lock_data {
481 struct drm_hw_lock *hw_lock; /**< Hardware lock */
482 /** Private of lock holder's file (NULL=kernel) */
483 struct drm_file *file_priv;
484 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
485 unsigned long lock_time; /**< Time of last lock in jiffies */
487 uint32_t kernel_waiters;
488 uint32_t user_waiters;
495 struct drm_device_dma {
497 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
498 int buf_count; /**< total number of buffers */
499 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
501 int page_count; /**< number of pages */
502 unsigned long *pagelist; /**< page list */
503 unsigned long byte_count;
505 _DRM_DMA_USE_AGP = 0x01,
506 _DRM_DMA_USE_SG = 0x02,
507 _DRM_DMA_USE_FB = 0x04,
508 _DRM_DMA_USE_PCI_RO = 0x08
514 * AGP memory entry. Stored as a doubly linked list.
517 unsigned long handle; /**< handle */
519 unsigned long bound; /**< address */
521 struct list_head head;
527 * \sa drm_agp_init() and drm_device::agp.
529 struct drm_agp_head {
530 DRM_AGP_KERN agp_info; /**< AGP device information */
531 struct list_head memory;
532 unsigned long mode; /**< AGP mode */
533 struct agp_bridge_data *bridge;
534 int enabled; /**< whether the AGP bus as been enabled */
535 int acquired; /**< whether the AGP device has been acquired */
538 int cant_use_aperture;
539 unsigned long page_mask;
543 * Scatter-gather memory.
546 unsigned long handle;
549 struct page **pagelist;
555 struct drm_hw_lock *lock;
560 * Kernel side of a mapping
562 struct drm_local_map {
563 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
564 unsigned long size; /**< Requested physical size (bytes) */
565 enum drm_map_type type; /**< Type of memory to map */
566 enum drm_map_flags flags; /**< Flags */
567 void *handle; /**< User-space: "Handle" to pass to mmap() */
568 /**< Kernel-space: kernel-virtual address */
569 int mtrr; /**< MTRR slot used */
572 typedef struct drm_local_map drm_local_map_t;
577 struct drm_map_list {
578 struct list_head head; /**< list head */
579 struct drm_hash_item hash;
580 struct drm_local_map *map; /**< mapping */
582 struct drm_master *master;
583 struct drm_mm_node *file_offset_node; /**< fake offset */
587 * Context handle list
589 struct drm_ctx_list {
590 struct list_head head; /**< list head */
591 drm_context_t handle; /**< context handle */
592 struct drm_file *tag; /**< associated fd private data */
595 /* location of GART table */
596 #define DRM_ATI_GART_MAIN 1
597 #define DRM_ATI_GART_FB 2
599 #define DRM_ATI_GART_PCI 1
600 #define DRM_ATI_GART_PCIE 2
601 #define DRM_ATI_GART_IGP 3
603 struct drm_ati_pcigart_info {
604 int gart_table_location;
608 dma_addr_t table_mask;
609 struct drm_dma_handle *table_handle;
610 struct drm_local_map mapping;
615 * GEM specific mm private for tracking GEM objects
618 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */
619 struct drm_open_hash offset_hash; /**< User token hash table for maps */
623 * This structure defines the drm_mm memory object, which will be used by the
624 * DRM for its buffer objects.
626 struct drm_gem_object {
627 /** Reference count of this object */
628 struct kref refcount;
630 /** Handle count of this object. Each handle also holds a reference */
631 atomic_t handle_count; /* number of handles on this object */
633 /** Related drm device */
634 struct drm_device *dev;
636 /** File representing the shmem storage */
639 /* Mapping info for this object */
640 struct drm_map_list map_list;
643 * Size of the object, in bytes. Immutable over the object's
649 * Global name for this object, starts at 1. 0 means unnamed.
650 * Access is covered by the object_name_lock in the related drm_device
655 * Memory domains. These monitor which caches contain read/write data
656 * related to the object. When transitioning from one set of domains
657 * to another, the driver is called to ensure that caches are suitably
658 * flushed and invalidated
660 uint32_t read_domains;
661 uint32_t write_domain;
664 * While validating an exec operation, the
665 * new read/write domain values are computed here.
666 * They will be transferred to the above values
667 * at the point that any cache flushing occurs
669 uint32_t pending_read_domains;
670 uint32_t pending_write_domain;
672 void *driver_private;
674 /* dma buf exported from this GEM object */
675 struct dma_buf *export_dma_buf;
677 /* dma buf attachment backing this object */
678 struct dma_buf_attachment *import_attach;
681 #include <drm/drm_crtc.h>
683 /* per-master structure */
686 struct kref refcount; /* refcount for this master */
688 struct list_head head; /**< each minor contains a list of masters */
689 struct drm_minor *minor; /**< link back to minor we are a master for */
691 char *unique; /**< Unique identifier: e.g., busid */
692 int unique_len; /**< Length of unique field */
693 int unique_size; /**< amount allocated */
695 int blocked; /**< Blocked due to VC switch? */
697 /** \name Authentication */
699 struct drm_open_hash magiclist;
700 struct list_head magicfree;
703 struct drm_lock_data lock; /**< Information on hardware lock */
705 void *driver_priv; /**< Private structure for driver to use */
708 /* Size of ringbuffer for vblank timestamps. Just double-buffer
709 * in initial implementation.
711 #define DRM_VBLANKTIME_RBSIZE 2
713 /* Flags and return codes for get_vblank_timestamp() driver function. */
714 #define DRM_CALLED_FROM_VBLIRQ 1
715 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
716 #define DRM_VBLANKTIME_INVBL (1 << 1)
718 /* get_scanout_position() return flags */
719 #define DRM_SCANOUTPOS_VALID (1 << 0)
720 #define DRM_SCANOUTPOS_INVBL (1 << 1)
721 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
725 int (*get_irq)(struct drm_device *dev);
726 const char *(*get_name)(struct drm_device *dev);
727 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
728 int (*set_unique)(struct drm_device *dev, struct drm_master *master,
729 struct drm_unique *unique);
730 int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
731 /* hooks that are for PCI */
732 int (*agp_init)(struct drm_device *dev);
737 * DRM driver structure. This structure represent the common code for
738 * a family of cards. There will one drm_device for each card present
742 int (*load) (struct drm_device *, unsigned long flags);
743 int (*firstopen) (struct drm_device *);
744 int (*open) (struct drm_device *, struct drm_file *);
745 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
746 void (*postclose) (struct drm_device *, struct drm_file *);
747 void (*lastclose) (struct drm_device *);
748 int (*unload) (struct drm_device *);
749 int (*suspend) (struct drm_device *, pm_message_t state);
750 int (*resume) (struct drm_device *);
751 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
752 int (*dma_quiescent) (struct drm_device *);
753 int (*context_dtor) (struct drm_device *dev, int context);
756 * get_vblank_counter - get raw hardware vblank counter
758 * @crtc: counter to fetch
760 * Driver callback for fetching a raw hardware vblank counter for @crtc.
761 * If a device doesn't have a hardware counter, the driver can simply
762 * return the value of drm_vblank_count. The DRM core will account for
763 * missed vblank events while interrupts where disabled based on system
766 * Wraparound handling and loss of events due to modesetting is dealt
767 * with in the DRM core code.
770 * Raw vblank counter value.
772 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
775 * enable_vblank - enable vblank interrupt events
777 * @crtc: which irq to enable
779 * Enable vblank interrupts for @crtc. If the device doesn't have
780 * a hardware vblank counter, this routine should be a no-op, since
781 * interrupts will have to stay on to keep the count accurate.
784 * Zero on success, appropriate errno if the given @crtc's vblank
785 * interrupt cannot be enabled.
787 int (*enable_vblank) (struct drm_device *dev, int crtc);
790 * disable_vblank - disable vblank interrupt events
792 * @crtc: which irq to enable
794 * Disable vblank interrupts for @crtc. If the device doesn't have
795 * a hardware vblank counter, this routine should be a no-op, since
796 * interrupts will have to stay on to keep the count accurate.
798 void (*disable_vblank) (struct drm_device *dev, int crtc);
801 * Called by \c drm_device_is_agp. Typically used to determine if a
802 * card is really attached to AGP or not.
804 * \param dev DRM device handle
807 * One of three values is returned depending on whether or not the
808 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
809 * (return of 1), or may or may not be AGP (return of 2).
811 int (*device_is_agp) (struct drm_device *dev);
814 * Called by vblank timestamping code.
816 * Return the current display scanout position from a crtc.
818 * \param dev DRM device.
819 * \param crtc Id of the crtc to query.
820 * \param *vpos Target location for current vertical scanout position.
821 * \param *hpos Target location for current horizontal scanout position.
823 * Returns vpos as a positive number while in active scanout area.
824 * Returns vpos as a negative number inside vblank, counting the number
825 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
826 * until start of active scanout / end of vblank."
828 * \return Flags, or'ed together as follows:
830 * DRM_SCANOUTPOS_VALID = Query successful.
831 * DRM_SCANOUTPOS_INVBL = Inside vblank.
832 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
833 * this flag means that returned position may be offset by a constant
834 * but unknown small number of scanlines wrt. real scanout position.
837 int (*get_scanout_position) (struct drm_device *dev, int crtc,
838 int *vpos, int *hpos);
841 * Called by \c drm_get_last_vbltimestamp. Should return a precise
842 * timestamp when the most recent VBLANK interval ended or will end.
844 * Specifically, the timestamp in @vblank_time should correspond as
845 * closely as possible to the time when the first video scanline of
846 * the video frame after the end of VBLANK will start scanning out,
847 * the time immediately after end of the VBLANK interval. If the
848 * @crtc is currently inside VBLANK, this will be a time in the future.
849 * If the @crtc is currently scanning out a frame, this will be the
850 * past start time of the current scanout. This is meant to adhere
851 * to the OpenML OML_sync_control extension specification.
853 * \param dev dev DRM device handle.
854 * \param crtc crtc for which timestamp should be returned.
855 * \param *max_error Maximum allowable timestamp error in nanoseconds.
856 * Implementation should strive to provide timestamp
857 * with an error of at most *max_error nanoseconds.
858 * Returns true upper bound on error for timestamp.
859 * \param *vblank_time Target location for returned vblank timestamp.
860 * \param flags 0 = Defaults, no special treatment needed.
861 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
862 * irq handler. Some drivers need to apply some workarounds
863 * for gpu-specific vblank irq quirks if flag is set.
866 * Zero if timestamping isn't supported in current display mode or a
867 * negative number on failure. A positive status code on success,
868 * which describes how the vblank_time timestamp was computed.
870 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
872 struct timeval *vblank_time,
875 /* these have to be filled in */
877 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
878 void (*irq_preinstall) (struct drm_device *dev);
879 int (*irq_postinstall) (struct drm_device *dev);
880 void (*irq_uninstall) (struct drm_device *dev);
881 void (*set_version) (struct drm_device *dev,
882 struct drm_set_version *sv);
884 /* Master routines */
885 int (*master_create)(struct drm_device *dev, struct drm_master *master);
886 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
888 * master_set is called whenever the minor master is set.
889 * master_drop is called whenever the minor master is dropped.
892 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
894 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
897 int (*debugfs_init)(struct drm_minor *minor);
898 void (*debugfs_cleanup)(struct drm_minor *minor);
901 * Driver-specific constructor for drm_gem_objects, to set up
902 * obj->driver_private.
904 * Returns 0 on success.
906 int (*gem_init_object) (struct drm_gem_object *obj);
907 void (*gem_free_object) (struct drm_gem_object *obj);
908 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
909 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
912 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
913 int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
914 uint32_t handle, uint32_t flags, int *prime_fd);
915 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
916 int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
917 int prime_fd, uint32_t *handle);
918 /* export GEM -> dmabuf */
919 struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
920 struct drm_gem_object *obj, int flags);
921 /* import dmabuf -> GEM */
922 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
923 struct dma_buf *dma_buf);
925 /* vga arb irq handler */
926 void (*vgaarb_irq)(struct drm_device *dev, bool state);
928 /* dumb alloc support */
929 int (*dumb_create)(struct drm_file *file_priv,
930 struct drm_device *dev,
931 struct drm_mode_create_dumb *args);
932 int (*dumb_map_offset)(struct drm_file *file_priv,
933 struct drm_device *dev, uint32_t handle,
935 int (*dumb_destroy)(struct drm_file *file_priv,
936 struct drm_device *dev,
939 /* Driver private ops for this object */
940 const struct vm_operations_struct *gem_vm_ops;
951 struct drm_ioctl_desc *ioctls;
953 const struct file_operations *fops;
955 struct pci_driver *pci;
956 struct platform_device *platform_device;
957 struct usb_driver *usb;
961 /* List of devices hanging off this driver */
962 struct list_head device_list;
965 #define DRM_MINOR_UNASSIGNED 0
966 #define DRM_MINOR_LEGACY 1
967 #define DRM_MINOR_CONTROL 2
968 #define DRM_MINOR_RENDER 3
972 * debugfs node list. This structure represents a debugfs file to
973 * be created by the drm core
975 struct drm_debugfs_list {
976 const char *name; /** file name */
977 int (*show)(struct seq_file*, void*); /** show callback */
978 u32 driver_features; /**< Required driver features for this entry */
982 * debugfs node structure. This structure represents a debugfs file.
984 struct drm_debugfs_node {
985 struct list_head list;
986 struct drm_minor *minor;
987 struct drm_debugfs_list *debugfs_ent;
992 * Info file list entry. This structure represents a debugfs or proc file to
993 * be created by the drm core
995 struct drm_info_list {
996 const char *name; /** file name */
997 int (*show)(struct seq_file*, void*); /** show callback */
998 u32 driver_features; /**< Required driver features for this entry */
1003 * debugfs node structure. This structure represents a debugfs file.
1005 struct drm_info_node {
1006 struct list_head list;
1007 struct drm_minor *minor;
1008 struct drm_info_list *info_ent;
1009 struct dentry *dent;
1013 * DRM minor structure. This structure represents a drm minor number.
1016 int index; /**< Minor device number */
1017 int type; /**< Control or render */
1018 dev_t device; /**< Device number for mknod */
1019 struct device kdev; /**< Linux device */
1020 struct drm_device *dev;
1022 struct proc_dir_entry *proc_root; /**< proc directory entry */
1023 struct drm_info_node proc_nodes;
1024 struct dentry *debugfs_root;
1026 struct list_head debugfs_list;
1027 struct mutex debugfs_lock; /* Protects debugfs_list. */
1029 struct drm_master *master; /* currently active master for this node */
1030 struct list_head master_list;
1031 struct drm_mode_group mode_group;
1034 /* mode specified on the command line */
1035 struct drm_cmdline_mode {
1037 bool refresh_specified;
1046 enum drm_connector_force force;
1050 struct drm_pending_vblank_event {
1051 struct drm_pending_event base;
1053 struct drm_event_vblank event;
1057 * DRM device structure. This structure represent a complete card that
1058 * may contain multiple heads.
1061 struct list_head driver_item; /**< list of devices per driver */
1062 char *devname; /**< For /proc/interrupts */
1063 int if_version; /**< Highest interface version set */
1067 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1068 struct mutex struct_mutex; /**< For others */
1071 /** \name Usage Counters */
1073 int open_count; /**< Outstanding files open */
1074 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
1075 atomic_t vma_count; /**< Outstanding vma areas open */
1076 int buf_use; /**< Buffers in use -- cannot alloc */
1077 atomic_t buf_alloc; /**< Buffer allocation in progress */
1080 /** \name Performance counters */
1082 unsigned long counters;
1083 enum drm_stat_type types[15];
1084 atomic_t counts[15];
1087 struct list_head filelist;
1089 /** \name Memory management */
1091 struct list_head maplist; /**< Linked list of regions */
1092 int map_count; /**< Number of mappable regions */
1093 struct drm_open_hash map_hash; /**< User token hash table for maps */
1095 /** \name Context handle management */
1097 struct list_head ctxlist; /**< Linked list of context handles */
1098 int ctx_count; /**< Number of context handles */
1099 struct mutex ctxlist_mutex; /**< For ctxlist */
1103 struct list_head vmalist; /**< List of vmas (for debugging) */
1107 /** \name DMA support */
1109 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1112 /** \name Context support */
1114 int irq_enabled; /**< True if irq handler is enabled */
1115 __volatile__ long context_flag; /**< Context swapping flag */
1116 __volatile__ long interrupt_flag; /**< Interruption handler flag */
1117 __volatile__ long dma_flag; /**< DMA dispatch flag */
1118 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
1119 int last_checked; /**< Last context checked for DMA */
1120 int last_context; /**< Last current context */
1121 unsigned long last_switch; /**< jiffies at last context switch */
1124 struct work_struct work;
1125 /** \name VBLANK IRQ support */
1129 * At load time, disabling the vblank interrupt won't be allowed since
1130 * old clients may not call the modeset ioctl and therefore misbehave.
1131 * Once the modeset ioctl *has* been called though, we can safely
1132 * disable them when unused.
1134 int vblank_disable_allowed;
1136 wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */
1137 atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1138 struct timeval *_vblank_time; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1139 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1140 spinlock_t vbl_lock;
1141 atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */
1142 u32 *last_vblank; /* protected by dev->vbl_lock, used */
1143 /* for wraparound handling */
1144 int *vblank_enabled; /* so we don't call enable more than
1146 int *vblank_inmodeset; /* Display driver is setting mode */
1147 u32 *last_vblank_wait; /* Last vblank seqno waited per CRTC */
1148 struct timer_list vblank_disable_timer;
1150 u32 max_vblank_count; /**< size of vblank counter register */
1155 struct list_head vblank_event_list;
1156 spinlock_t event_lock;
1162 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
1163 wait_queue_head_t buf_readers; /**< Processes waiting to read */
1164 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
1166 struct drm_agp_head *agp; /**< AGP data */
1168 struct device *dev; /**< Device structure */
1169 struct pci_dev *pdev; /**< PCI device structure */
1170 int pci_vendor; /**< PCI vendor id */
1171 int pci_device; /**< PCI device id */
1173 struct pci_controller *hose;
1176 struct platform_device *platformdev; /**< Platform device struture */
1177 struct usb_device *usbdev;
1179 struct drm_sg_mem *sg; /**< Scatter gather memory */
1180 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1181 void *dev_private; /**< device private data */
1183 struct address_space *dev_mapping;
1184 struct drm_sigdata sigdata; /**< For block_all_signals */
1187 struct drm_driver *driver;
1188 struct drm_local_map *agp_buffer_map;
1189 unsigned int agp_buffer_token;
1190 struct drm_minor *control; /**< Control node for card */
1191 struct drm_minor *primary; /**< render type primary screen head */
1193 struct drm_mode_config mode_config; /**< Current mode config */
1195 /** \name GEM information */
1197 spinlock_t object_name_lock;
1198 struct idr object_name_idr;
1200 int switch_power_state;
1202 atomic_t unplugged; /* device has been unplugged or gone away */
1205 #define DRM_SWITCH_POWER_ON 0
1206 #define DRM_SWITCH_POWER_OFF 1
1207 #define DRM_SWITCH_POWER_CHANGING 2
1209 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1212 return ((dev->driver->driver_features & feature) ? 1 : 0);
1215 static inline int drm_dev_to_irq(struct drm_device *dev)
1217 return dev->driver->bus->get_irq(dev);
1222 static inline int drm_core_has_AGP(struct drm_device *dev)
1224 return drm_core_check_feature(dev, DRIVER_USE_AGP);
1227 #define drm_core_has_AGP(dev) (0)
1231 static inline int drm_core_has_MTRR(struct drm_device *dev)
1233 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1236 #define DRM_MTRR_WC MTRR_TYPE_WRCOMB
1238 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1241 return mtrr_add(offset, size, flags, 1);
1244 static inline int drm_mtrr_del(int handle, unsigned long offset,
1245 unsigned long size, unsigned int flags)
1247 return mtrr_del(handle, offset, size);
1251 #define drm_core_has_MTRR(dev) (0)
1253 #define DRM_MTRR_WC 0
1255 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1261 static inline int drm_mtrr_del(int handle, unsigned long offset,
1262 unsigned long size, unsigned int flags)
1268 static inline void drm_device_set_unplugged(struct drm_device *dev)
1271 atomic_set(&dev->unplugged, 1);
1274 static inline int drm_device_is_unplugged(struct drm_device *dev)
1276 int ret = atomic_read(&dev->unplugged);
1281 /******************************************************************/
1282 /** \name Internal function definitions */
1285 /* Driver support (drm_drv.h) */
1286 extern long drm_ioctl(struct file *filp,
1287 unsigned int cmd, unsigned long arg);
1288 extern long drm_compat_ioctl(struct file *filp,
1289 unsigned int cmd, unsigned long arg);
1290 extern int drm_lastclose(struct drm_device *dev);
1292 /* Device support (drm_fops.h) */
1293 extern struct mutex drm_global_mutex;
1294 extern int drm_open(struct inode *inode, struct file *filp);
1295 extern int drm_stub_open(struct inode *inode, struct file *filp);
1296 extern int drm_fasync(int fd, struct file *filp, int on);
1297 extern ssize_t drm_read(struct file *filp, char __user *buffer,
1298 size_t count, loff_t *offset);
1299 extern int drm_release(struct inode *inode, struct file *filp);
1301 /* Mapping support (drm_vm.h) */
1302 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1303 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1304 extern void drm_vm_open_locked(struct drm_device *dev, struct vm_area_struct *vma);
1305 extern void drm_vm_close_locked(struct drm_device *dev, struct vm_area_struct *vma);
1306 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1308 /* Memory management support (drm_memory.h) */
1309 #include <drm/drm_memory.h>
1310 extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
1311 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
1312 extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
1313 struct page **pages,
1314 unsigned long num_pages,
1315 uint32_t gtt_offset,
1317 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
1319 /* Misc. IOCTL support (drm_ioctl.h) */
1320 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1321 struct drm_file *file_priv);
1322 extern int drm_getunique(struct drm_device *dev, void *data,
1323 struct drm_file *file_priv);
1324 extern int drm_setunique(struct drm_device *dev, void *data,
1325 struct drm_file *file_priv);
1326 extern int drm_getmap(struct drm_device *dev, void *data,
1327 struct drm_file *file_priv);
1328 extern int drm_getclient(struct drm_device *dev, void *data,
1329 struct drm_file *file_priv);
1330 extern int drm_getstats(struct drm_device *dev, void *data,
1331 struct drm_file *file_priv);
1332 extern int drm_getcap(struct drm_device *dev, void *data,
1333 struct drm_file *file_priv);
1334 extern int drm_setversion(struct drm_device *dev, void *data,
1335 struct drm_file *file_priv);
1336 extern int drm_noop(struct drm_device *dev, void *data,
1337 struct drm_file *file_priv);
1339 /* Context IOCTL support (drm_context.h) */
1340 extern int drm_resctx(struct drm_device *dev, void *data,
1341 struct drm_file *file_priv);
1342 extern int drm_addctx(struct drm_device *dev, void *data,
1343 struct drm_file *file_priv);
1344 extern int drm_modctx(struct drm_device *dev, void *data,
1345 struct drm_file *file_priv);
1346 extern int drm_getctx(struct drm_device *dev, void *data,
1347 struct drm_file *file_priv);
1348 extern int drm_switchctx(struct drm_device *dev, void *data,
1349 struct drm_file *file_priv);
1350 extern int drm_newctx(struct drm_device *dev, void *data,
1351 struct drm_file *file_priv);
1352 extern int drm_rmctx(struct drm_device *dev, void *data,
1353 struct drm_file *file_priv);
1355 extern int drm_ctxbitmap_init(struct drm_device *dev);
1356 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1357 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1359 extern int drm_setsareactx(struct drm_device *dev, void *data,
1360 struct drm_file *file_priv);
1361 extern int drm_getsareactx(struct drm_device *dev, void *data,
1362 struct drm_file *file_priv);
1364 /* Authentication IOCTL support (drm_auth.h) */
1365 extern int drm_getmagic(struct drm_device *dev, void *data,
1366 struct drm_file *file_priv);
1367 extern int drm_authmagic(struct drm_device *dev, void *data,
1368 struct drm_file *file_priv);
1369 extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic);
1371 /* Cache management (drm_cache.c) */
1372 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1373 void drm_clflush_sg(struct sg_table *st);
1374 void drm_clflush_virt_range(char *addr, unsigned long length);
1376 /* Locking IOCTL support (drm_lock.h) */
1377 extern int drm_lock(struct drm_device *dev, void *data,
1378 struct drm_file *file_priv);
1379 extern int drm_unlock(struct drm_device *dev, void *data,
1380 struct drm_file *file_priv);
1381 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1382 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1383 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1386 * These are exported to drivers so that they can implement fencing using
1387 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1390 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1392 /* Buffer management support (drm_bufs.h) */
1393 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1394 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1395 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1396 unsigned int size, enum drm_map_type type,
1397 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1398 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1399 struct drm_file *file_priv);
1400 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1401 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1402 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1403 struct drm_file *file_priv);
1404 extern int drm_addbufs(struct drm_device *dev, void *data,
1405 struct drm_file *file_priv);
1406 extern int drm_infobufs(struct drm_device *dev, void *data,
1407 struct drm_file *file_priv);
1408 extern int drm_markbufs(struct drm_device *dev, void *data,
1409 struct drm_file *file_priv);
1410 extern int drm_freebufs(struct drm_device *dev, void *data,
1411 struct drm_file *file_priv);
1412 extern int drm_mapbufs(struct drm_device *dev, void *data,
1413 struct drm_file *file_priv);
1414 extern int drm_order(unsigned long size);
1416 /* DMA support (drm_dma.h) */
1417 extern int drm_dma_setup(struct drm_device *dev);
1418 extern void drm_dma_takedown(struct drm_device *dev);
1419 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1420 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1421 struct drm_file *filp);
1423 /* IRQ support (drm_irq.h) */
1424 extern int drm_control(struct drm_device *dev, void *data,
1425 struct drm_file *file_priv);
1426 extern int drm_irq_install(struct drm_device *dev);
1427 extern int drm_irq_uninstall(struct drm_device *dev);
1429 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1430 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1431 struct drm_file *filp);
1432 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1433 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1434 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1435 struct timeval *vblanktime);
1436 extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
1437 struct drm_pending_vblank_event *e);
1438 extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1439 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1440 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1441 extern void drm_vblank_off(struct drm_device *dev, int crtc);
1442 extern void drm_vblank_cleanup(struct drm_device *dev);
1443 extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1444 struct timeval *tvblank, unsigned flags);
1445 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1446 int crtc, int *max_error,
1447 struct timeval *vblank_time,
1449 struct drm_crtc *refcrtc);
1450 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
1453 drm_mode_parse_command_line_for_connector(const char *mode_option,
1454 struct drm_connector *connector,
1455 struct drm_cmdline_mode *mode);
1457 extern struct drm_display_mode *
1458 drm_mode_create_from_cmdline_mode(struct drm_device *dev,
1459 struct drm_cmdline_mode *cmd);
1461 extern int drm_display_mode_from_videomode(const struct videomode *vm,
1462 struct drm_display_mode *dmode);
1464 /* Modesetting support */
1465 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1466 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1467 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1468 struct drm_file *file_priv);
1470 /* AGP/GART support (drm_agpsupport.h) */
1471 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1472 extern int drm_agp_acquire(struct drm_device *dev);
1473 extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1474 struct drm_file *file_priv);
1475 extern int drm_agp_release(struct drm_device *dev);
1476 extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1477 struct drm_file *file_priv);
1478 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1479 extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1480 struct drm_file *file_priv);
1481 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1482 extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1483 struct drm_file *file_priv);
1484 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1485 extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1486 struct drm_file *file_priv);
1487 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1488 extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1489 struct drm_file *file_priv);
1490 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1491 extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1492 struct drm_file *file_priv);
1493 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1494 extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1495 struct drm_file *file_priv);
1497 /* Stub support (drm_stub.h) */
1498 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1499 struct drm_file *file_priv);
1500 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1501 struct drm_file *file_priv);
1502 struct drm_master *drm_master_create(struct drm_minor *minor);
1503 extern struct drm_master *drm_master_get(struct drm_master *master);
1504 extern void drm_master_put(struct drm_master **master);
1506 extern void drm_put_dev(struct drm_device *dev);
1507 extern int drm_put_minor(struct drm_minor **minor);
1508 extern void drm_unplug_dev(struct drm_device *dev);
1509 extern unsigned int drm_debug;
1511 extern unsigned int drm_vblank_offdelay;
1512 extern unsigned int drm_timestamp_precision;
1513 extern unsigned int drm_timestamp_monotonic;
1515 extern struct class *drm_class;
1516 extern struct proc_dir_entry *drm_proc_root;
1517 extern struct dentry *drm_debugfs_root;
1519 extern struct idr drm_minors_idr;
1521 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1523 /* Proc support (drm_proc.h) */
1524 extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1525 struct proc_dir_entry *root);
1526 extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1528 /* Debugfs support */
1529 #if defined(CONFIG_DEBUG_FS)
1530 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1531 struct dentry *root);
1532 extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1533 struct dentry *root, struct drm_minor *minor);
1534 extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1535 struct drm_minor *minor);
1536 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1539 /* Info file support */
1540 extern int drm_name_info(struct seq_file *m, void *data);
1541 extern int drm_vm_info(struct seq_file *m, void *data);
1542 extern int drm_bufs_info(struct seq_file *m, void *data);
1543 extern int drm_vblank_info(struct seq_file *m, void *data);
1544 extern int drm_clients_info(struct seq_file *m, void* data);
1545 extern int drm_gem_name_info(struct seq_file *m, void *data);
1548 extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
1549 struct drm_file *file_priv, uint32_t handle, uint32_t flags,
1551 extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
1552 struct drm_file *file_priv, int prime_fd, uint32_t *handle);
1554 extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
1555 struct drm_file *file_priv);
1556 extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data,
1557 struct drm_file *file_priv);
1559 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
1560 dma_addr_t *addrs, int max_pages);
1561 extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages);
1562 extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
1565 void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv);
1566 void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv);
1567 int drm_prime_add_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t handle);
1568 int drm_prime_lookup_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t *handle);
1569 void drm_prime_remove_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf);
1571 int drm_prime_add_dma_buf(struct drm_device *dev, struct drm_gem_object *obj);
1572 int drm_prime_lookup_obj(struct drm_device *dev, struct dma_buf *buf,
1573 struct drm_gem_object **obj);
1576 extern int drm_vma_info(struct seq_file *m, void *data);
1579 /* Scatter Gather Support (drm_scatter.h) */
1580 extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1581 extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1582 struct drm_file *file_priv);
1583 extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1584 extern int drm_sg_free(struct drm_device *dev, void *data,
1585 struct drm_file *file_priv);
1587 /* ATI PCIGART support (ati_pcigart.h) */
1588 extern int drm_ati_pcigart_init(struct drm_device *dev,
1589 struct drm_ati_pcigart_info * gart_info);
1590 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1591 struct drm_ati_pcigart_info * gart_info);
1593 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1595 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1596 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1598 /* sysfs support (drm_sysfs.c) */
1599 struct drm_sysfs_class;
1600 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1601 extern void drm_sysfs_destroy(void);
1602 extern int drm_sysfs_device_add(struct drm_minor *minor);
1603 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1604 extern void drm_sysfs_device_remove(struct drm_minor *minor);
1605 extern char *drm_get_connector_status_name(enum drm_connector_status status);
1606 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1607 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1609 /* Graphics Execution Manager library functions (drm_gem.c) */
1610 int drm_gem_init(struct drm_device *dev);
1611 void drm_gem_destroy(struct drm_device *dev);
1612 void drm_gem_object_release(struct drm_gem_object *obj);
1613 void drm_gem_object_free(struct kref *kref);
1614 struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1616 int drm_gem_object_init(struct drm_device *dev,
1617 struct drm_gem_object *obj, size_t size);
1618 int drm_gem_private_object_init(struct drm_device *dev,
1619 struct drm_gem_object *obj, size_t size);
1620 void drm_gem_object_handle_free(struct drm_gem_object *obj);
1621 void drm_gem_vm_open(struct vm_area_struct *vma);
1622 void drm_gem_vm_close(struct vm_area_struct *vma);
1623 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1625 #include <drm/drm_global.h>
1628 drm_gem_object_reference(struct drm_gem_object *obj)
1630 kref_get(&obj->refcount);
1634 drm_gem_object_unreference(struct drm_gem_object *obj)
1637 kref_put(&obj->refcount, drm_gem_object_free);
1641 drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1644 struct drm_device *dev = obj->dev;
1645 mutex_lock(&dev->struct_mutex);
1646 kref_put(&obj->refcount, drm_gem_object_free);
1647 mutex_unlock(&dev->struct_mutex);
1651 int drm_gem_handle_create(struct drm_file *file_priv,
1652 struct drm_gem_object *obj,
1654 int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
1657 drm_gem_object_handle_reference(struct drm_gem_object *obj)
1659 drm_gem_object_reference(obj);
1660 atomic_inc(&obj->handle_count);
1664 drm_gem_object_handle_unreference(struct drm_gem_object *obj)
1669 if (atomic_read(&obj->handle_count) == 0)
1672 * Must bump handle count first as this may be the last
1673 * ref, in which case the object would disappear before we
1674 * checked for a name
1676 if (atomic_dec_and_test(&obj->handle_count))
1677 drm_gem_object_handle_free(obj);
1678 drm_gem_object_unreference(obj);
1682 drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj)
1687 if (atomic_read(&obj->handle_count) == 0)
1691 * Must bump handle count first as this may be the last
1692 * ref, in which case the object would disappear before we
1693 * checked for a name
1696 if (atomic_dec_and_test(&obj->handle_count))
1697 drm_gem_object_handle_free(obj);
1698 drm_gem_object_unreference_unlocked(obj);
1701 void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
1702 int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
1704 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1705 struct drm_file *filp,
1707 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1708 struct drm_file *file_priv);
1709 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1710 struct drm_file *file_priv);
1711 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1712 struct drm_file *file_priv);
1713 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1714 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1716 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1717 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1718 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1720 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1723 struct drm_map_list *_entry;
1724 list_for_each_entry(_entry, &dev->maplist, head)
1725 if (_entry->user_token == token)
1730 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1734 #include <drm/drm_mem_util.h>
1736 extern int drm_fill_in_dev(struct drm_device *dev,
1737 const struct pci_device_id *ent,
1738 struct drm_driver *driver);
1739 int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
1743 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1745 if (dev->driver->device_is_agp != NULL) {
1746 int err = (*dev->driver->device_is_agp) (dev);
1753 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1756 extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1757 extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1758 extern int drm_get_pci_dev(struct pci_dev *pdev,
1759 const struct pci_device_id *ent,
1760 struct drm_driver *driver);
1762 #define DRM_PCIE_SPEED_25 1
1763 #define DRM_PCIE_SPEED_50 2
1764 #define DRM_PCIE_SPEED_80 4
1766 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
1768 /* platform section */
1769 extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1770 extern void drm_platform_exit(struct drm_driver *driver, struct platform_device *platform_device);
1772 extern int drm_get_platform_dev(struct platform_device *pdev,
1773 struct drm_driver *driver);
1775 /* returns true if currently okay to sleep */
1776 static __inline__ bool drm_can_sleep(void)
1778 if (in_atomic() || in_dbg_master() || irqs_disabled())
1783 #endif /* __KERNEL__ */