3 * Private header for Direct Rendering Manager
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
10 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
11 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
12 * Copyright (c) 2009-2010, Code Aurora Forum.
13 * All rights reserved.
15 * Permission is hereby granted, free of charge, to any person obtaining a
16 * copy of this software and associated documentation files (the "Software"),
17 * to deal in the Software without restriction, including without limitation
18 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
19 * and/or sell copies of the Software, and to permit persons to whom the
20 * Software is furnished to do so, subject to the following conditions:
22 * The above copyright notice and this permission notice (including the next
23 * paragraph) shall be included in all copies or substantial portions of the
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
29 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
30 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
31 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
32 * OTHER DEALINGS IN THE SOFTWARE.
40 /* add include of current.h so that "current" is defined
41 * before static inline funcs in wait.h. Doing this so we
42 * can build the DRM (part of PI DRI). 4/21/2000 S + B */
43 #include <asm/current.h>
44 #endif /* __alpha__ */
45 #include <linux/kernel.h>
46 #include <linux/miscdevice.h>
48 #include <linux/proc_fs.h>
49 #include <linux/init.h>
50 #include <linux/file.h>
51 #include <linux/platform_device.h>
52 #include <linux/pci.h>
53 #include <linux/jiffies.h>
54 #include <linux/dma-mapping.h>
56 #include <linux/cdev.h>
57 #include <linux/mutex.h>
59 #include <linux/slab.h>
60 #if defined(__alpha__) || defined(__powerpc__)
61 #include <asm/pgtable.h> /* For pte_wrprotect */
64 #include <asm/uaccess.h>
65 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
66 #include <linux/types.h>
67 #include <linux/agp_backend.h>
69 #include <linux/workqueue.h>
70 #include <linux/poll.h>
71 #include <asm/pgalloc.h>
73 #include <drm/drm_sarea.h>
74 #include <drm/drm_vma_manager.h>
76 #include <linux/idr.h>
78 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
79 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
89 #include <drm/drm_os_linux.h>
90 #include <drm/drm_hashtab.h>
91 #include <drm/drm_mm.h>
93 #define DRM_UT_CORE 0x01
94 #define DRM_UT_DRIVER 0x02
95 #define DRM_UT_KMS 0x04
96 #define DRM_UT_PRIME 0x08
98 * Three debug levels are defined.
99 * drm_core, drm_driver, drm_kms
100 * drm_core level can be used in the generic drm code. For example:
101 * drm_ioctl, drm_mm, drm_memory
102 * The macro definition of DRM_DEBUG is used.
103 * DRM_DEBUG(fmt, args...)
104 * The debug info by using the DRM_DEBUG can be obtained by adding
105 * the boot option of "drm.debug=1".
107 * drm_driver level can be used in the specific drm driver. It is used
108 * to add the debug info related with the drm driver. For example:
109 * i915_drv, i915_dma, i915_gem, radeon_drv,
110 * The macro definition of DRM_DEBUG_DRIVER can be used.
111 * DRM_DEBUG_DRIVER(fmt, args...)
112 * The debug info by using the DRM_DEBUG_DRIVER can be obtained by
113 * adding the boot option of "drm.debug=0x02"
115 * drm_kms level can be used in the KMS code related with specific drm driver.
116 * It is used to add the debug info related with KMS mode. For example:
117 * the connector/crtc ,
118 * The macro definition of DRM_DEBUG_KMS can be used.
119 * DRM_DEBUG_KMS(fmt, args...)
120 * The debug info by using the DRM_DEBUG_KMS can be obtained by
121 * adding the boot option of "drm.debug=0x04"
123 * If we add the boot option of "drm.debug=0x06", we can get the debug info by
124 * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
125 * If we add the boot option of "drm.debug=0x05", we can get the debug info by
126 * using the DRM_DEBUG_KMS and DRM_DEBUG.
129 extern __printf(4, 5)
130 void drm_ut_debug_printk(unsigned int request_level,
132 const char *function_name,
133 const char *format, ...);
134 extern __printf(2, 3)
135 int drm_err(const char *func, const char *format, ...);
137 /***********************************************************************/
138 /** \name DRM template customization defaults */
141 /* driver capabilities and requirements mask */
142 #define DRIVER_USE_AGP 0x1
143 #define DRIVER_REQUIRE_AGP 0x2
144 #define DRIVER_USE_MTRR 0x4
145 #define DRIVER_PCI_DMA 0x8
146 #define DRIVER_SG 0x10
147 #define DRIVER_HAVE_DMA 0x20
148 #define DRIVER_HAVE_IRQ 0x40
149 #define DRIVER_IRQ_SHARED 0x80
150 #define DRIVER_IRQ_VBL 0x100
151 #define DRIVER_DMA_QUEUE 0x200
152 #define DRIVER_FB_DMA 0x400
153 #define DRIVER_IRQ_VBL2 0x800
154 #define DRIVER_GEM 0x1000
155 #define DRIVER_MODESET 0x2000
156 #define DRIVER_PRIME 0x4000
158 #define DRIVER_BUS_PCI 0x1
159 #define DRIVER_BUS_PLATFORM 0x2
160 #define DRIVER_BUS_USB 0x3
162 /***********************************************************************/
163 /** \name Begin the DRM... */
166 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
167 also include looping detection. */
169 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
170 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
171 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
172 #define DRM_LOOPING_LIMIT 5000000
173 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
174 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
176 #define DRM_FLAG_DEBUG 0x01
178 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
179 #define DRM_MAP_HASH_OFFSET 0x10000000
183 /***********************************************************************/
184 /** \name Macros to make printk easier */
190 * \param fmt printf() like format string.
191 * \param arg arguments
193 #define DRM_ERROR(fmt, ...) \
194 drm_err(__func__, fmt, ##__VA_ARGS__)
196 #define DRM_INFO(fmt, ...) \
197 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
202 * \param fmt printf() like format string.
203 * \param arg arguments
206 #define DRM_DEBUG(fmt, args...) \
208 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
209 __func__, fmt, ##args); \
212 #define DRM_DEBUG_DRIVER(fmt, args...) \
214 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
215 __func__, fmt, ##args); \
217 #define DRM_DEBUG_KMS(fmt, args...) \
219 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
220 __func__, fmt, ##args); \
222 #define DRM_DEBUG_PRIME(fmt, args...) \
224 drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME, \
225 __func__, fmt, ##args); \
227 #define DRM_LOG(fmt, args...) \
229 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
230 NULL, fmt, ##args); \
232 #define DRM_LOG_KMS(fmt, args...) \
234 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
235 NULL, fmt, ##args); \
237 #define DRM_LOG_MODE(fmt, args...) \
239 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
240 NULL, fmt, ##args); \
242 #define DRM_LOG_DRIVER(fmt, args...) \
244 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
245 NULL, fmt, ##args); \
248 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
249 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
250 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
251 #define DRM_DEBUG(fmt, arg...) do { } while (0)
252 #define DRM_LOG(fmt, arg...) do { } while (0)
253 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
254 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
255 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
261 /***********************************************************************/
262 /** \name Internal types and structures */
265 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
267 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
268 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
270 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
273 * Test that the hardware lock is held by the caller, returning otherwise.
275 * \param dev DRM device.
276 * \param filp file pointer of the caller.
278 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
280 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
281 _file_priv->master->lock.file_priv != _file_priv) { \
282 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
283 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
284 _file_priv->master->lock.file_priv, _file_priv); \
290 * Ioctl function type.
292 * \param inode device inode.
293 * \param file_priv DRM file private pointer.
294 * \param cmd command.
295 * \param arg argument.
297 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
298 struct drm_file *file_priv);
300 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
303 #define DRM_IOCTL_NR(n) _IOC_NR(n)
304 #define DRM_MAJOR 226
307 #define DRM_MASTER 0x2
308 #define DRM_ROOT_ONLY 0x4
309 #define DRM_CONTROL_ALLOW 0x8
310 #define DRM_UNLOCKED 0x10
312 struct drm_ioctl_desc {
316 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, .name = #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 */
453 * fbs - List of framebuffers associated with this file.
455 * Protected by fbs_lock. Note that the fbs list holds a reference on
456 * the fb object to prevent it from untimely disappearing.
458 struct list_head fbs;
459 struct mutex fbs_lock;
461 wait_queue_head_t event_wait;
462 struct list_head event_list;
465 struct drm_prime_file_private prime;
470 atomic_t use_count; /**< Outstanding uses (+1) */
471 atomic_t finalization; /**< Finalization in progress */
472 atomic_t block_count; /**< Count of processes waiting */
473 atomic_t block_read; /**< Queue blocked for reads */
474 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
475 atomic_t block_write; /**< Queue blocked for writes */
476 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
477 atomic_t total_queued; /**< Total queued statistic */
478 atomic_t total_flushed; /**< Total flushes statistic */
479 atomic_t total_locks; /**< Total locks statistics */
480 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
481 struct drm_waitlist waitlist; /**< Pending buffers */
482 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
488 struct drm_lock_data {
489 struct drm_hw_lock *hw_lock; /**< Hardware lock */
490 /** Private of lock holder's file (NULL=kernel) */
491 struct drm_file *file_priv;
492 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
493 unsigned long lock_time; /**< Time of last lock in jiffies */
495 uint32_t kernel_waiters;
496 uint32_t user_waiters;
503 struct drm_device_dma {
505 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
506 int buf_count; /**< total number of buffers */
507 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
509 int page_count; /**< number of pages */
510 unsigned long *pagelist; /**< page list */
511 unsigned long byte_count;
513 _DRM_DMA_USE_AGP = 0x01,
514 _DRM_DMA_USE_SG = 0x02,
515 _DRM_DMA_USE_FB = 0x04,
516 _DRM_DMA_USE_PCI_RO = 0x08
522 * AGP memory entry. Stored as a doubly linked list.
525 unsigned long handle; /**< handle */
527 unsigned long bound; /**< address */
529 struct list_head head;
535 * \sa drm_agp_init() and drm_device::agp.
537 struct drm_agp_head {
538 DRM_AGP_KERN agp_info; /**< AGP device information */
539 struct list_head memory;
540 unsigned long mode; /**< AGP mode */
541 struct agp_bridge_data *bridge;
542 int enabled; /**< whether the AGP bus as been enabled */
543 int acquired; /**< whether the AGP device has been acquired */
546 int cant_use_aperture;
547 unsigned long page_mask;
551 * Scatter-gather memory.
554 unsigned long handle;
557 struct page **pagelist;
563 struct drm_hw_lock *lock;
568 * Kernel side of a mapping
570 struct drm_local_map {
571 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
572 unsigned long size; /**< Requested physical size (bytes) */
573 enum drm_map_type type; /**< Type of memory to map */
574 enum drm_map_flags flags; /**< Flags */
575 void *handle; /**< User-space: "Handle" to pass to mmap() */
576 /**< Kernel-space: kernel-virtual address */
577 int mtrr; /**< MTRR slot used */
580 typedef struct drm_local_map drm_local_map_t;
585 struct drm_map_list {
586 struct list_head head; /**< list head */
587 struct drm_hash_item hash;
588 struct drm_local_map *map; /**< mapping */
590 struct drm_master *master;
594 * Context handle list
596 struct drm_ctx_list {
597 struct list_head head; /**< list head */
598 drm_context_t handle; /**< context handle */
599 struct drm_file *tag; /**< associated fd private data */
602 /* location of GART table */
603 #define DRM_ATI_GART_MAIN 1
604 #define DRM_ATI_GART_FB 2
606 #define DRM_ATI_GART_PCI 1
607 #define DRM_ATI_GART_PCIE 2
608 #define DRM_ATI_GART_IGP 3
610 struct drm_ati_pcigart_info {
611 int gart_table_location;
615 dma_addr_t table_mask;
616 struct drm_dma_handle *table_handle;
617 struct drm_local_map mapping;
622 * GEM specific mm private for tracking GEM objects
625 struct drm_vma_offset_manager vma_manager;
629 * This structure defines the drm_mm memory object, which will be used by the
630 * DRM for its buffer objects.
632 struct drm_gem_object {
633 /** Reference count of this object */
634 struct kref refcount;
636 /** Handle count of this object. Each handle also holds a reference */
637 atomic_t handle_count; /* number of handles on this object */
639 /** Related drm device */
640 struct drm_device *dev;
642 /** File representing the shmem storage */
645 /* Mapping info for this object */
646 struct drm_vma_offset_node vma_node;
649 * Size of the object, in bytes. Immutable over the object's
655 * Global name for this object, starts at 1. 0 means unnamed.
656 * Access is covered by the object_name_lock in the related drm_device
661 * Memory domains. These monitor which caches contain read/write data
662 * related to the object. When transitioning from one set of domains
663 * to another, the driver is called to ensure that caches are suitably
664 * flushed and invalidated
666 uint32_t read_domains;
667 uint32_t write_domain;
670 * While validating an exec operation, the
671 * new read/write domain values are computed here.
672 * They will be transferred to the above values
673 * at the point that any cache flushing occurs
675 uint32_t pending_read_domains;
676 uint32_t pending_write_domain;
678 void *driver_private;
680 /* dma buf exported from this GEM object */
681 struct dma_buf *export_dma_buf;
683 /* dma buf attachment backing this object */
684 struct dma_buf_attachment *import_attach;
687 #include <drm/drm_crtc.h>
689 /* per-master structure */
692 struct kref refcount; /* refcount for this master */
694 struct list_head head; /**< each minor contains a list of masters */
695 struct drm_minor *minor; /**< link back to minor we are a master for */
697 char *unique; /**< Unique identifier: e.g., busid */
698 int unique_len; /**< Length of unique field */
699 int unique_size; /**< amount allocated */
701 int blocked; /**< Blocked due to VC switch? */
703 /** \name Authentication */
705 struct drm_open_hash magiclist;
706 struct list_head magicfree;
709 struct drm_lock_data lock; /**< Information on hardware lock */
711 void *driver_priv; /**< Private structure for driver to use */
714 /* Size of ringbuffer for vblank timestamps. Just double-buffer
715 * in initial implementation.
717 #define DRM_VBLANKTIME_RBSIZE 2
719 /* Flags and return codes for get_vblank_timestamp() driver function. */
720 #define DRM_CALLED_FROM_VBLIRQ 1
721 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
722 #define DRM_VBLANKTIME_INVBL (1 << 1)
724 /* get_scanout_position() return flags */
725 #define DRM_SCANOUTPOS_VALID (1 << 0)
726 #define DRM_SCANOUTPOS_INVBL (1 << 1)
727 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
731 int (*get_irq)(struct drm_device *dev);
732 const char *(*get_name)(struct drm_device *dev);
733 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
734 int (*set_unique)(struct drm_device *dev, struct drm_master *master,
735 struct drm_unique *unique);
736 int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
737 /* hooks that are for PCI */
738 int (*agp_init)(struct drm_device *dev);
743 * DRM driver structure. This structure represent the common code for
744 * a family of cards. There will one drm_device for each card present
748 int (*load) (struct drm_device *, unsigned long flags);
749 int (*firstopen) (struct drm_device *);
750 int (*open) (struct drm_device *, struct drm_file *);
751 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
752 void (*postclose) (struct drm_device *, struct drm_file *);
753 void (*lastclose) (struct drm_device *);
754 int (*unload) (struct drm_device *);
755 int (*suspend) (struct drm_device *, pm_message_t state);
756 int (*resume) (struct drm_device *);
757 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
758 int (*dma_quiescent) (struct drm_device *);
759 int (*context_dtor) (struct drm_device *dev, int context);
762 * get_vblank_counter - get raw hardware vblank counter
764 * @crtc: counter to fetch
766 * Driver callback for fetching a raw hardware vblank counter for @crtc.
767 * If a device doesn't have a hardware counter, the driver can simply
768 * return the value of drm_vblank_count. The DRM core will account for
769 * missed vblank events while interrupts where disabled based on system
772 * Wraparound handling and loss of events due to modesetting is dealt
773 * with in the DRM core code.
776 * Raw vblank counter value.
778 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
781 * enable_vblank - enable vblank interrupt events
783 * @crtc: which irq to enable
785 * Enable vblank interrupts for @crtc. If the device doesn't have
786 * a hardware vblank counter, this routine should be a no-op, since
787 * interrupts will have to stay on to keep the count accurate.
790 * Zero on success, appropriate errno if the given @crtc's vblank
791 * interrupt cannot be enabled.
793 int (*enable_vblank) (struct drm_device *dev, int crtc);
796 * disable_vblank - disable vblank interrupt events
798 * @crtc: which irq to enable
800 * Disable vblank interrupts for @crtc. If the device doesn't have
801 * a hardware vblank counter, this routine should be a no-op, since
802 * interrupts will have to stay on to keep the count accurate.
804 void (*disable_vblank) (struct drm_device *dev, int crtc);
807 * Called by \c drm_device_is_agp. Typically used to determine if a
808 * card is really attached to AGP or not.
810 * \param dev DRM device handle
813 * One of three values is returned depending on whether or not the
814 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
815 * (return of 1), or may or may not be AGP (return of 2).
817 int (*device_is_agp) (struct drm_device *dev);
820 * Called by vblank timestamping code.
822 * Return the current display scanout position from a crtc.
824 * \param dev DRM device.
825 * \param crtc Id of the crtc to query.
826 * \param *vpos Target location for current vertical scanout position.
827 * \param *hpos Target location for current horizontal scanout position.
829 * Returns vpos as a positive number while in active scanout area.
830 * Returns vpos as a negative number inside vblank, counting the number
831 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
832 * until start of active scanout / end of vblank."
834 * \return Flags, or'ed together as follows:
836 * DRM_SCANOUTPOS_VALID = Query successful.
837 * DRM_SCANOUTPOS_INVBL = Inside vblank.
838 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
839 * this flag means that returned position may be offset by a constant
840 * but unknown small number of scanlines wrt. real scanout position.
843 int (*get_scanout_position) (struct drm_device *dev, int crtc,
844 int *vpos, int *hpos);
847 * Called by \c drm_get_last_vbltimestamp. Should return a precise
848 * timestamp when the most recent VBLANK interval ended or will end.
850 * Specifically, the timestamp in @vblank_time should correspond as
851 * closely as possible to the time when the first video scanline of
852 * the video frame after the end of VBLANK will start scanning out,
853 * the time immediately after end of the VBLANK interval. If the
854 * @crtc is currently inside VBLANK, this will be a time in the future.
855 * If the @crtc is currently scanning out a frame, this will be the
856 * past start time of the current scanout. This is meant to adhere
857 * to the OpenML OML_sync_control extension specification.
859 * \param dev dev DRM device handle.
860 * \param crtc crtc for which timestamp should be returned.
861 * \param *max_error Maximum allowable timestamp error in nanoseconds.
862 * Implementation should strive to provide timestamp
863 * with an error of at most *max_error nanoseconds.
864 * Returns true upper bound on error for timestamp.
865 * \param *vblank_time Target location for returned vblank timestamp.
866 * \param flags 0 = Defaults, no special treatment needed.
867 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
868 * irq handler. Some drivers need to apply some workarounds
869 * for gpu-specific vblank irq quirks if flag is set.
872 * Zero if timestamping isn't supported in current display mode or a
873 * negative number on failure. A positive status code on success,
874 * which describes how the vblank_time timestamp was computed.
876 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
878 struct timeval *vblank_time,
881 /* these have to be filled in */
883 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
884 void (*irq_preinstall) (struct drm_device *dev);
885 int (*irq_postinstall) (struct drm_device *dev);
886 void (*irq_uninstall) (struct drm_device *dev);
887 void (*set_version) (struct drm_device *dev,
888 struct drm_set_version *sv);
890 /* Master routines */
891 int (*master_create)(struct drm_device *dev, struct drm_master *master);
892 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
894 * master_set is called whenever the minor master is set.
895 * master_drop is called whenever the minor master is dropped.
898 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
900 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
903 int (*debugfs_init)(struct drm_minor *minor);
904 void (*debugfs_cleanup)(struct drm_minor *minor);
907 * Driver-specific constructor for drm_gem_objects, to set up
908 * obj->driver_private.
910 * Returns 0 on success.
912 int (*gem_init_object) (struct drm_gem_object *obj);
913 void (*gem_free_object) (struct drm_gem_object *obj);
914 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
915 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
918 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
919 int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
920 uint32_t handle, uint32_t flags, int *prime_fd);
921 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
922 int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
923 int prime_fd, uint32_t *handle);
924 /* export GEM -> dmabuf */
925 struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
926 struct drm_gem_object *obj, int flags);
927 /* import dmabuf -> GEM */
928 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
929 struct dma_buf *dma_buf);
930 /* low-level interface used by drm_gem_prime_{import,export} */
931 int (*gem_prime_pin)(struct drm_gem_object *obj);
932 void (*gem_prime_unpin)(struct drm_gem_object *obj);
933 struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj);
934 struct drm_gem_object *(*gem_prime_import_sg_table)(
935 struct drm_device *dev, size_t size,
936 struct sg_table *sgt);
937 void *(*gem_prime_vmap)(struct drm_gem_object *obj);
938 void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr);
939 int (*gem_prime_mmap)(struct drm_gem_object *obj,
940 struct vm_area_struct *vma);
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 int last_context; /**< Last current context */
1136 struct work_struct work;
1137 /** \name VBLANK IRQ support */
1141 * At load time, disabling the vblank interrupt won't be allowed since
1142 * old clients may not call the modeset ioctl and therefore misbehave.
1143 * Once the modeset ioctl *has* been called though, we can safely
1144 * disable them when unused.
1146 int vblank_disable_allowed;
1148 wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */
1149 atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1150 struct timeval *_vblank_time; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1151 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1152 spinlock_t vbl_lock;
1153 atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */
1154 u32 *last_vblank; /* protected by dev->vbl_lock, used */
1155 /* for wraparound handling */
1156 int *vblank_enabled; /* so we don't call enable more than
1158 int *vblank_inmodeset; /* Display driver is setting mode */
1159 u32 *last_vblank_wait; /* Last vblank seqno waited per CRTC */
1160 struct timer_list vblank_disable_timer;
1162 u32 max_vblank_count; /**< size of vblank counter register */
1167 struct list_head vblank_event_list;
1168 spinlock_t event_lock;
1172 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
1174 struct drm_agp_head *agp; /**< AGP data */
1176 struct device *dev; /**< Device structure */
1177 struct pci_dev *pdev; /**< PCI device structure */
1178 int pci_vendor; /**< PCI vendor id */
1179 int pci_device; /**< PCI device id */
1181 struct pci_controller *hose;
1184 struct platform_device *platformdev; /**< Platform device struture */
1185 struct usb_device *usbdev;
1187 struct drm_sg_mem *sg; /**< Scatter gather memory */
1188 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1189 void *dev_private; /**< device private data */
1191 struct address_space *dev_mapping;
1192 struct drm_sigdata sigdata; /**< For block_all_signals */
1195 struct drm_driver *driver;
1196 struct drm_local_map *agp_buffer_map;
1197 unsigned int agp_buffer_token;
1198 struct drm_minor *control; /**< Control node for card */
1199 struct drm_minor *primary; /**< render type primary screen head */
1201 struct drm_mode_config mode_config; /**< Current mode config */
1203 /** \name GEM information */
1205 spinlock_t object_name_lock;
1206 struct idr object_name_idr;
1208 int switch_power_state;
1210 atomic_t unplugged; /* device has been unplugged or gone away */
1213 #define DRM_SWITCH_POWER_ON 0
1214 #define DRM_SWITCH_POWER_OFF 1
1215 #define DRM_SWITCH_POWER_CHANGING 2
1217 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1220 return ((dev->driver->driver_features & feature) ? 1 : 0);
1223 static inline int drm_dev_to_irq(struct drm_device *dev)
1225 return dev->driver->bus->get_irq(dev);
1230 static inline int drm_core_has_AGP(struct drm_device *dev)
1232 return drm_core_check_feature(dev, DRIVER_USE_AGP);
1235 #define drm_core_has_AGP(dev) (0)
1239 static inline int drm_core_has_MTRR(struct drm_device *dev)
1241 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1244 #define drm_core_has_MTRR(dev) (0)
1247 static inline void drm_device_set_unplugged(struct drm_device *dev)
1250 atomic_set(&dev->unplugged, 1);
1253 static inline int drm_device_is_unplugged(struct drm_device *dev)
1255 int ret = atomic_read(&dev->unplugged);
1260 static inline bool drm_modeset_is_locked(struct drm_device *dev)
1262 return mutex_is_locked(&dev->mode_config.mutex);
1265 /******************************************************************/
1266 /** \name Internal function definitions */
1269 /* Driver support (drm_drv.h) */
1270 extern long drm_ioctl(struct file *filp,
1271 unsigned int cmd, unsigned long arg);
1272 extern long drm_compat_ioctl(struct file *filp,
1273 unsigned int cmd, unsigned long arg);
1274 extern int drm_lastclose(struct drm_device *dev);
1276 /* Device support (drm_fops.h) */
1277 extern struct mutex drm_global_mutex;
1278 extern int drm_open(struct inode *inode, struct file *filp);
1279 extern int drm_stub_open(struct inode *inode, struct file *filp);
1280 extern int drm_fasync(int fd, struct file *filp, int on);
1281 extern ssize_t drm_read(struct file *filp, char __user *buffer,
1282 size_t count, loff_t *offset);
1283 extern int drm_release(struct inode *inode, struct file *filp);
1285 /* Mapping support (drm_vm.h) */
1286 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1287 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1288 extern void drm_vm_open_locked(struct drm_device *dev, struct vm_area_struct *vma);
1289 extern void drm_vm_close_locked(struct drm_device *dev, struct vm_area_struct *vma);
1290 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1292 /* Memory management support (drm_memory.h) */
1293 #include <drm/drm_memory.h>
1294 extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
1295 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
1296 extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
1297 struct page **pages,
1298 unsigned long num_pages,
1299 uint32_t gtt_offset,
1301 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
1303 /* Misc. IOCTL support (drm_ioctl.h) */
1304 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1305 struct drm_file *file_priv);
1306 extern int drm_getunique(struct drm_device *dev, void *data,
1307 struct drm_file *file_priv);
1308 extern int drm_setunique(struct drm_device *dev, void *data,
1309 struct drm_file *file_priv);
1310 extern int drm_getmap(struct drm_device *dev, void *data,
1311 struct drm_file *file_priv);
1312 extern int drm_getclient(struct drm_device *dev, void *data,
1313 struct drm_file *file_priv);
1314 extern int drm_getstats(struct drm_device *dev, void *data,
1315 struct drm_file *file_priv);
1316 extern int drm_getcap(struct drm_device *dev, void *data,
1317 struct drm_file *file_priv);
1318 extern int drm_setversion(struct drm_device *dev, void *data,
1319 struct drm_file *file_priv);
1320 extern int drm_noop(struct drm_device *dev, void *data,
1321 struct drm_file *file_priv);
1323 /* Context IOCTL support (drm_context.h) */
1324 extern int drm_resctx(struct drm_device *dev, void *data,
1325 struct drm_file *file_priv);
1326 extern int drm_addctx(struct drm_device *dev, void *data,
1327 struct drm_file *file_priv);
1328 extern int drm_getctx(struct drm_device *dev, void *data,
1329 struct drm_file *file_priv);
1330 extern int drm_switchctx(struct drm_device *dev, void *data,
1331 struct drm_file *file_priv);
1332 extern int drm_newctx(struct drm_device *dev, void *data,
1333 struct drm_file *file_priv);
1334 extern int drm_rmctx(struct drm_device *dev, void *data,
1335 struct drm_file *file_priv);
1337 extern int drm_ctxbitmap_init(struct drm_device *dev);
1338 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1339 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1341 extern int drm_setsareactx(struct drm_device *dev, void *data,
1342 struct drm_file *file_priv);
1343 extern int drm_getsareactx(struct drm_device *dev, void *data,
1344 struct drm_file *file_priv);
1346 /* Authentication IOCTL support (drm_auth.h) */
1347 extern int drm_getmagic(struct drm_device *dev, void *data,
1348 struct drm_file *file_priv);
1349 extern int drm_authmagic(struct drm_device *dev, void *data,
1350 struct drm_file *file_priv);
1351 extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic);
1353 /* Cache management (drm_cache.c) */
1354 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1355 void drm_clflush_sg(struct sg_table *st);
1356 void drm_clflush_virt_range(char *addr, unsigned long length);
1358 /* Locking IOCTL support (drm_lock.h) */
1359 extern int drm_lock(struct drm_device *dev, void *data,
1360 struct drm_file *file_priv);
1361 extern int drm_unlock(struct drm_device *dev, void *data,
1362 struct drm_file *file_priv);
1363 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1364 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1365 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1368 * These are exported to drivers so that they can implement fencing using
1369 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1372 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1374 /* Buffer management support (drm_bufs.h) */
1375 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1376 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1377 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1378 unsigned int size, enum drm_map_type type,
1379 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1380 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1381 struct drm_file *file_priv);
1382 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1383 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1384 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1385 struct drm_file *file_priv);
1386 extern int drm_addbufs(struct drm_device *dev, void *data,
1387 struct drm_file *file_priv);
1388 extern int drm_infobufs(struct drm_device *dev, void *data,
1389 struct drm_file *file_priv);
1390 extern int drm_markbufs(struct drm_device *dev, void *data,
1391 struct drm_file *file_priv);
1392 extern int drm_freebufs(struct drm_device *dev, void *data,
1393 struct drm_file *file_priv);
1394 extern int drm_mapbufs(struct drm_device *dev, void *data,
1395 struct drm_file *file_priv);
1397 /* DMA support (drm_dma.h) */
1398 extern int drm_dma_setup(struct drm_device *dev);
1399 extern void drm_dma_takedown(struct drm_device *dev);
1400 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1401 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1402 struct drm_file *filp);
1404 /* IRQ support (drm_irq.h) */
1405 extern int drm_control(struct drm_device *dev, void *data,
1406 struct drm_file *file_priv);
1407 extern int drm_irq_install(struct drm_device *dev);
1408 extern int drm_irq_uninstall(struct drm_device *dev);
1410 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1411 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1412 struct drm_file *filp);
1413 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1414 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1415 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1416 struct timeval *vblanktime);
1417 extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
1418 struct drm_pending_vblank_event *e);
1419 extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1420 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1421 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1422 extern void drm_vblank_off(struct drm_device *dev, int crtc);
1423 extern void drm_vblank_cleanup(struct drm_device *dev);
1424 extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1425 struct timeval *tvblank, unsigned flags);
1426 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1427 int crtc, int *max_error,
1428 struct timeval *vblank_time,
1430 struct drm_crtc *refcrtc);
1431 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
1434 drm_mode_parse_command_line_for_connector(const char *mode_option,
1435 struct drm_connector *connector,
1436 struct drm_cmdline_mode *mode);
1438 extern struct drm_display_mode *
1439 drm_mode_create_from_cmdline_mode(struct drm_device *dev,
1440 struct drm_cmdline_mode *cmd);
1442 extern int drm_display_mode_from_videomode(const struct videomode *vm,
1443 struct drm_display_mode *dmode);
1444 extern int of_get_drm_display_mode(struct device_node *np,
1445 struct drm_display_mode *dmode,
1448 /* Modesetting support */
1449 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1450 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1451 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1452 struct drm_file *file_priv);
1454 /* AGP/GART support (drm_agpsupport.h) */
1455 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1456 extern int drm_agp_acquire(struct drm_device *dev);
1457 extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1458 struct drm_file *file_priv);
1459 extern int drm_agp_release(struct drm_device *dev);
1460 extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1461 struct drm_file *file_priv);
1462 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1463 extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1464 struct drm_file *file_priv);
1465 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1466 extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1467 struct drm_file *file_priv);
1468 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1469 extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1470 struct drm_file *file_priv);
1471 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1472 extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1473 struct drm_file *file_priv);
1474 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1475 extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1476 struct drm_file *file_priv);
1477 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1478 extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1479 struct drm_file *file_priv);
1481 /* Stub support (drm_stub.h) */
1482 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1483 struct drm_file *file_priv);
1484 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1485 struct drm_file *file_priv);
1486 struct drm_master *drm_master_create(struct drm_minor *minor);
1487 extern struct drm_master *drm_master_get(struct drm_master *master);
1488 extern void drm_master_put(struct drm_master **master);
1490 extern void drm_put_dev(struct drm_device *dev);
1491 extern int drm_put_minor(struct drm_minor **minor);
1492 extern void drm_unplug_dev(struct drm_device *dev);
1493 extern unsigned int drm_debug;
1495 extern unsigned int drm_vblank_offdelay;
1496 extern unsigned int drm_timestamp_precision;
1497 extern unsigned int drm_timestamp_monotonic;
1499 extern struct class *drm_class;
1500 extern struct proc_dir_entry *drm_proc_root;
1501 extern struct dentry *drm_debugfs_root;
1503 extern struct idr drm_minors_idr;
1505 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1507 /* Proc support (drm_proc.h) */
1508 extern int drm_proc_init(struct drm_minor *minor, struct proc_dir_entry *root);
1509 extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1511 /* Debugfs support */
1512 #if defined(CONFIG_DEBUG_FS)
1513 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1514 struct dentry *root);
1515 extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1516 struct dentry *root, struct drm_minor *minor);
1517 extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1518 struct drm_minor *minor);
1519 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1522 /* Info file support */
1523 extern int drm_name_info(struct seq_file *m, void *data);
1524 extern int drm_vm_info(struct seq_file *m, void *data);
1525 extern int drm_bufs_info(struct seq_file *m, void *data);
1526 extern int drm_vblank_info(struct seq_file *m, void *data);
1527 extern int drm_clients_info(struct seq_file *m, void* data);
1528 extern int drm_gem_name_info(struct seq_file *m, void *data);
1531 extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
1532 struct drm_gem_object *obj, int flags);
1533 extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
1534 struct drm_file *file_priv, uint32_t handle, uint32_t flags,
1536 extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
1537 struct dma_buf *dma_buf);
1538 extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
1539 struct drm_file *file_priv, int prime_fd, uint32_t *handle);
1541 extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
1542 struct drm_file *file_priv);
1543 extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data,
1544 struct drm_file *file_priv);
1546 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
1547 dma_addr_t *addrs, int max_pages);
1548 extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages);
1549 extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
1552 void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv);
1553 void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv);
1554 int drm_prime_lookup_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t *handle);
1555 void drm_prime_remove_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf);
1557 int drm_prime_add_dma_buf(struct drm_device *dev, struct drm_gem_object *obj);
1558 int drm_prime_lookup_obj(struct drm_device *dev, struct dma_buf *buf,
1559 struct drm_gem_object **obj);
1562 extern int drm_vma_info(struct seq_file *m, void *data);
1565 /* Scatter Gather Support (drm_scatter.h) */
1566 extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1567 extern int drm_sg_alloc(struct drm_device *dev, void *data,
1568 struct drm_file *file_priv);
1569 extern int drm_sg_free(struct drm_device *dev, void *data,
1570 struct drm_file *file_priv);
1572 /* ATI PCIGART support (ati_pcigart.h) */
1573 extern int drm_ati_pcigart_init(struct drm_device *dev,
1574 struct drm_ati_pcigart_info * gart_info);
1575 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1576 struct drm_ati_pcigart_info * gart_info);
1578 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1580 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1581 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1583 /* sysfs support (drm_sysfs.c) */
1584 struct drm_sysfs_class;
1585 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1586 extern void drm_sysfs_destroy(void);
1587 extern int drm_sysfs_device_add(struct drm_minor *minor);
1588 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1589 extern void drm_sysfs_device_remove(struct drm_minor *minor);
1590 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1591 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1593 /* Graphics Execution Manager library functions (drm_gem.c) */
1594 int drm_gem_init(struct drm_device *dev);
1595 void drm_gem_destroy(struct drm_device *dev);
1596 void drm_gem_object_release(struct drm_gem_object *obj);
1597 void drm_gem_object_free(struct kref *kref);
1598 struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1600 int drm_gem_object_init(struct drm_device *dev,
1601 struct drm_gem_object *obj, size_t size);
1602 void drm_gem_private_object_init(struct drm_device *dev,
1603 struct drm_gem_object *obj, size_t size);
1604 void drm_gem_object_handle_free(struct drm_gem_object *obj);
1605 void drm_gem_vm_open(struct vm_area_struct *vma);
1606 void drm_gem_vm_close(struct vm_area_struct *vma);
1607 int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,
1608 struct vm_area_struct *vma);
1609 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1611 #include <drm/drm_global.h>
1614 drm_gem_object_reference(struct drm_gem_object *obj)
1616 kref_get(&obj->refcount);
1620 drm_gem_object_unreference(struct drm_gem_object *obj)
1623 kref_put(&obj->refcount, drm_gem_object_free);
1627 drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1630 struct drm_device *dev = obj->dev;
1631 mutex_lock(&dev->struct_mutex);
1632 kref_put(&obj->refcount, drm_gem_object_free);
1633 mutex_unlock(&dev->struct_mutex);
1637 int drm_gem_handle_create(struct drm_file *file_priv,
1638 struct drm_gem_object *obj,
1640 int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
1643 drm_gem_object_handle_reference(struct drm_gem_object *obj)
1645 drm_gem_object_reference(obj);
1646 atomic_inc(&obj->handle_count);
1650 drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj)
1655 if (atomic_read(&obj->handle_count) == 0)
1659 * Must bump handle count first as this may be the last
1660 * ref, in which case the object would disappear before we
1661 * checked for a name
1664 if (atomic_dec_and_test(&obj->handle_count))
1665 drm_gem_object_handle_free(obj);
1666 drm_gem_object_unreference_unlocked(obj);
1669 void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
1670 int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
1672 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1673 struct drm_file *filp,
1675 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1676 struct drm_file *file_priv);
1677 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1678 struct drm_file *file_priv);
1679 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1680 struct drm_file *file_priv);
1681 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1682 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1684 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1685 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1686 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1688 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1691 struct drm_map_list *_entry;
1692 list_for_each_entry(_entry, &dev->maplist, head)
1693 if (_entry->user_token == token)
1698 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1702 #include <drm/drm_mem_util.h>
1704 extern int drm_fill_in_dev(struct drm_device *dev,
1705 const struct pci_device_id *ent,
1706 struct drm_driver *driver);
1707 int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
1711 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1713 if (dev->driver->device_is_agp != NULL) {
1714 int err = (*dev->driver->device_is_agp) (dev);
1721 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1724 extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1725 extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1726 extern int drm_get_pci_dev(struct pci_dev *pdev,
1727 const struct pci_device_id *ent,
1728 struct drm_driver *driver);
1730 #define DRM_PCIE_SPEED_25 1
1731 #define DRM_PCIE_SPEED_50 2
1732 #define DRM_PCIE_SPEED_80 4
1734 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
1736 /* platform section */
1737 extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1738 extern void drm_platform_exit(struct drm_driver *driver, struct platform_device *platform_device);
1740 extern int drm_get_platform_dev(struct platform_device *pdev,
1741 struct drm_driver *driver);
1743 /* returns true if currently okay to sleep */
1744 static __inline__ bool drm_can_sleep(void)
1746 if (in_atomic() || in_dbg_master() || irqs_disabled())
1751 #endif /* __KERNEL__ */