3 * Private header for Direct Rendering Manager
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
10 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
11 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
12 * Copyright (c) 2009-2010, Code Aurora Forum.
13 * All rights reserved.
15 * Permission is hereby granted, free of charge, to any person obtaining a
16 * copy of this software and associated documentation files (the "Software"),
17 * to deal in the Software without restriction, including without limitation
18 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
19 * and/or sell copies of the Software, and to permit persons to whom the
20 * Software is furnished to do so, subject to the following conditions:
22 * The above copyright notice and this permission notice (including the next
23 * paragraph) shall be included in all copies or substantial portions of the
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
29 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
30 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
31 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
32 * OTHER DEALINGS IN THE SOFTWARE.
40 /* add include of current.h so that "current" is defined
41 * before static inline funcs in wait.h. Doing this so we
42 * can build the DRM (part of PI DRI). 4/21/2000 S + B */
43 #include <asm/current.h>
44 #endif /* __alpha__ */
45 #include <linux/kernel.h>
46 #include <linux/miscdevice.h>
48 #include <linux/proc_fs.h>
49 #include <linux/init.h>
50 #include <linux/file.h>
51 #include <linux/platform_device.h>
52 #include <linux/pci.h>
53 #include <linux/jiffies.h>
54 #include <linux/dma-mapping.h>
56 #include <linux/cdev.h>
57 #include <linux/mutex.h>
59 #include <linux/slab.h>
60 #if defined(__alpha__) || defined(__powerpc__)
61 #include <asm/pgtable.h> /* For pte_wrprotect */
64 #include <asm/uaccess.h>
65 #include <linux/types.h>
66 #include <linux/agp_backend.h>
67 #include <linux/workqueue.h>
68 #include <linux/poll.h>
69 #include <asm/pgalloc.h>
71 #include <drm/drm_sarea.h>
72 #include <drm/drm_vma_manager.h>
74 #include <linux/idr.h>
76 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
77 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
87 #include <drm/drm_os_linux.h>
88 #include <drm/drm_hashtab.h>
89 #include <drm/drm_mm.h>
91 #define DRM_UT_CORE 0x01
92 #define DRM_UT_DRIVER 0x02
93 #define DRM_UT_KMS 0x04
94 #define DRM_UT_PRIME 0x08
96 * Three debug levels are defined.
97 * drm_core, drm_driver, drm_kms
98 * drm_core level can be used in the generic drm code. For example:
99 * drm_ioctl, drm_mm, drm_memory
100 * The macro definition of DRM_DEBUG is used.
101 * DRM_DEBUG(fmt, args...)
102 * The debug info by using the DRM_DEBUG can be obtained by adding
103 * the boot option of "drm.debug=1".
105 * drm_driver level can be used in the specific drm driver. It is used
106 * to add the debug info related with the drm driver. For example:
107 * i915_drv, i915_dma, i915_gem, radeon_drv,
108 * The macro definition of DRM_DEBUG_DRIVER can be used.
109 * DRM_DEBUG_DRIVER(fmt, args...)
110 * The debug info by using the DRM_DEBUG_DRIVER can be obtained by
111 * adding the boot option of "drm.debug=0x02"
113 * drm_kms level can be used in the KMS code related with specific drm driver.
114 * It is used to add the debug info related with KMS mode. For example:
115 * the connector/crtc ,
116 * The macro definition of DRM_DEBUG_KMS can be used.
117 * DRM_DEBUG_KMS(fmt, args...)
118 * The debug info by using the DRM_DEBUG_KMS can be obtained by
119 * adding the boot option of "drm.debug=0x04"
121 * If we add the boot option of "drm.debug=0x06", we can get the debug info by
122 * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
123 * If we add the boot option of "drm.debug=0x05", we can get the debug info by
124 * using the DRM_DEBUG_KMS and DRM_DEBUG.
127 extern __printf(4, 5)
128 void drm_ut_debug_printk(unsigned int request_level,
130 const char *function_name,
131 const char *format, ...);
132 extern __printf(2, 3)
133 int drm_err(const char *func, const char *format, ...);
135 /***********************************************************************/
136 /** \name DRM template customization defaults */
139 /* driver capabilities and requirements mask */
140 #define DRIVER_USE_AGP 0x1
141 #define DRIVER_REQUIRE_AGP 0x2
142 #define DRIVER_USE_MTRR 0x4
143 #define DRIVER_PCI_DMA 0x8
144 #define DRIVER_SG 0x10
145 #define DRIVER_HAVE_DMA 0x20
146 #define DRIVER_HAVE_IRQ 0x40
147 #define DRIVER_IRQ_SHARED 0x80
148 #define DRIVER_IRQ_VBL 0x100
149 #define DRIVER_DMA_QUEUE 0x200
150 #define DRIVER_FB_DMA 0x400
151 #define DRIVER_IRQ_VBL2 0x800
152 #define DRIVER_GEM 0x1000
153 #define DRIVER_MODESET 0x2000
154 #define DRIVER_PRIME 0x4000
156 #define DRIVER_BUS_PCI 0x1
157 #define DRIVER_BUS_PLATFORM 0x2
158 #define DRIVER_BUS_USB 0x3
160 /***********************************************************************/
161 /** \name Begin the DRM... */
164 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
165 also include looping detection. */
167 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
168 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
169 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
170 #define DRM_LOOPING_LIMIT 5000000
171 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
172 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
174 #define DRM_FLAG_DEBUG 0x01
176 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
177 #define DRM_MAP_HASH_OFFSET 0x10000000
181 /***********************************************************************/
182 /** \name Macros to make printk easier */
188 * \param fmt printf() like format string.
189 * \param arg arguments
191 #define DRM_ERROR(fmt, ...) \
192 drm_err(__func__, fmt, ##__VA_ARGS__)
194 #define DRM_INFO(fmt, ...) \
195 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
200 * \param fmt printf() like format string.
201 * \param arg arguments
204 #define DRM_DEBUG(fmt, args...) \
206 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
207 __func__, fmt, ##args); \
210 #define DRM_DEBUG_DRIVER(fmt, args...) \
212 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
213 __func__, fmt, ##args); \
215 #define DRM_DEBUG_KMS(fmt, args...) \
217 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
218 __func__, fmt, ##args); \
220 #define DRM_DEBUG_PRIME(fmt, args...) \
222 drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME, \
223 __func__, fmt, ##args); \
225 #define DRM_LOG(fmt, args...) \
227 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
228 NULL, fmt, ##args); \
230 #define DRM_LOG_KMS(fmt, args...) \
232 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
233 NULL, fmt, ##args); \
235 #define DRM_LOG_MODE(fmt, args...) \
237 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
238 NULL, fmt, ##args); \
240 #define DRM_LOG_DRIVER(fmt, args...) \
242 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
243 NULL, fmt, ##args); \
246 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
247 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
248 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
249 #define DRM_DEBUG(fmt, arg...) do { } while (0)
250 #define DRM_LOG(fmt, arg...) do { } while (0)
251 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
252 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
253 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
259 /***********************************************************************/
260 /** \name Internal types and structures */
263 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
265 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
266 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
268 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
271 * Test that the hardware lock is held by the caller, returning otherwise.
273 * \param dev DRM device.
274 * \param filp file pointer of the caller.
276 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
278 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
279 _file_priv->master->lock.file_priv != _file_priv) { \
280 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
281 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
282 _file_priv->master->lock.file_priv, _file_priv); \
288 * Ioctl function type.
290 * \param inode device inode.
291 * \param file_priv DRM file private pointer.
292 * \param cmd command.
293 * \param arg argument.
295 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
296 struct drm_file *file_priv);
298 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
301 #define DRM_IOCTL_NR(n) _IOC_NR(n)
302 #define DRM_MAJOR 226
305 #define DRM_MASTER 0x2
306 #define DRM_ROOT_ONLY 0x4
307 #define DRM_CONTROL_ALLOW 0x8
308 #define DRM_UNLOCKED 0x10
310 struct drm_ioctl_desc {
314 unsigned int cmd_drv;
319 * Creates a driver or general drm_ioctl_desc array entry for the given
320 * ioctl, for use by drm_ioctl().
323 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
324 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
326 struct drm_magic_entry {
327 struct list_head head;
328 struct drm_hash_item hash_item;
329 struct drm_file *priv;
332 struct drm_vma_entry {
333 struct list_head head;
334 struct vm_area_struct *vma;
342 int idx; /**< Index into master buflist */
343 int total; /**< Buffer size */
344 int order; /**< log-base-2(total) */
345 int used; /**< Amount of buffer in use (for DMA) */
346 unsigned long offset; /**< Byte offset (used internally) */
347 void *address; /**< Address of buffer */
348 unsigned long bus_address; /**< Bus address of buffer */
349 struct drm_buf *next; /**< Kernel-only: used for free list */
350 __volatile__ int waiting; /**< On kernel DMA queue */
351 __volatile__ int pending; /**< On hardware DMA queue */
352 struct drm_file *file_priv; /**< Private of holding file descr */
353 int context; /**< Kernel queue for this buffer */
354 int while_locked; /**< Dispatch this buffer while locked */
362 } list; /**< Which list we're on */
364 int dev_priv_size; /**< Size of buffer private storage */
365 void *dev_private; /**< Per-buffer private storage */
368 /** bufs is one longer than it has to be */
369 struct drm_waitlist {
370 int count; /**< Number of possible buffers */
371 struct drm_buf **bufs; /**< List of pointers to buffers */
372 struct drm_buf **rp; /**< Read pointer */
373 struct drm_buf **wp; /**< Write pointer */
374 struct drm_buf **end; /**< End pointer */
375 spinlock_t read_lock;
376 spinlock_t write_lock;
379 struct drm_freelist {
380 int initialized; /**< Freelist in use */
381 atomic_t count; /**< Number of free buffers */
382 struct drm_buf *next; /**< End pointer */
384 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
385 int low_mark; /**< Low water mark */
386 int high_mark; /**< High water mark */
387 atomic_t wfh; /**< If waiting for high mark */
391 typedef struct drm_dma_handle {
398 * Buffer entry. There is one of this for each buffer size order.
400 struct drm_buf_entry {
401 int buf_size; /**< size */
402 int buf_count; /**< number of buffers */
403 struct drm_buf *buflist; /**< buffer list */
406 struct drm_dma_handle **seglist;
408 struct drm_freelist freelist;
411 /* Event queued up for userspace to read */
412 struct drm_pending_event {
413 struct drm_event *event;
414 struct list_head link;
415 struct drm_file *file_priv;
416 pid_t pid; /* pid of requester, no guarantee it's valid by the time
417 we deliver the event, for tracing only */
418 void (*destroy)(struct drm_pending_event *event);
421 /* initial implementaton using a linked list - todo hashtab */
422 struct drm_prime_file_private {
423 struct list_head head;
427 /** File private data */
433 unsigned long ioctl_count;
434 struct list_head lhead;
435 struct drm_minor *minor;
436 unsigned long lock_count;
438 /** Mapping of mm object handles to object pointers. */
439 struct idr object_idr;
440 /** Lock for synchronization of access to object_idr. */
441 spinlock_t table_lock;
446 int is_master; /* this file private is a master for a minor */
447 struct drm_master *master; /* master this node is currently associated with
448 N.B. not always minor->master */
451 * fbs - List of framebuffers associated with this file.
453 * Protected by fbs_lock. Note that the fbs list holds a reference on
454 * the fb object to prevent it from untimely disappearing.
456 struct list_head fbs;
457 struct mutex fbs_lock;
459 wait_queue_head_t event_wait;
460 struct list_head event_list;
463 struct drm_prime_file_private prime;
468 atomic_t use_count; /**< Outstanding uses (+1) */
469 atomic_t finalization; /**< Finalization in progress */
470 atomic_t block_count; /**< Count of processes waiting */
471 atomic_t block_read; /**< Queue blocked for reads */
472 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
473 atomic_t block_write; /**< Queue blocked for writes */
474 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
475 atomic_t total_queued; /**< Total queued statistic */
476 atomic_t total_flushed; /**< Total flushes statistic */
477 atomic_t total_locks; /**< Total locks statistics */
478 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
479 struct drm_waitlist waitlist; /**< Pending buffers */
480 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
486 struct drm_lock_data {
487 struct drm_hw_lock *hw_lock; /**< Hardware lock */
488 /** Private of lock holder's file (NULL=kernel) */
489 struct drm_file *file_priv;
490 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
491 unsigned long lock_time; /**< Time of last lock in jiffies */
493 uint32_t kernel_waiters;
494 uint32_t user_waiters;
501 struct drm_device_dma {
503 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
504 int buf_count; /**< total number of buffers */
505 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
507 int page_count; /**< number of pages */
508 unsigned long *pagelist; /**< page list */
509 unsigned long byte_count;
511 _DRM_DMA_USE_AGP = 0x01,
512 _DRM_DMA_USE_SG = 0x02,
513 _DRM_DMA_USE_FB = 0x04,
514 _DRM_DMA_USE_PCI_RO = 0x08
520 * AGP memory entry. Stored as a doubly linked list.
523 unsigned long handle; /**< handle */
525 unsigned long bound; /**< address */
527 struct list_head head;
533 * \sa drm_agp_init() and drm_device::agp.
535 struct drm_agp_head {
536 DRM_AGP_KERN agp_info; /**< AGP device information */
537 struct list_head memory;
538 unsigned long mode; /**< AGP mode */
539 struct agp_bridge_data *bridge;
540 int enabled; /**< whether the AGP bus as been enabled */
541 int acquired; /**< whether the AGP device has been acquired */
544 int cant_use_aperture;
545 unsigned long page_mask;
549 * Scatter-gather memory.
552 unsigned long handle;
555 struct page **pagelist;
561 struct drm_hw_lock *lock;
566 * Kernel side of a mapping
568 struct drm_local_map {
569 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
570 unsigned long size; /**< Requested physical size (bytes) */
571 enum drm_map_type type; /**< Type of memory to map */
572 enum drm_map_flags flags; /**< Flags */
573 void *handle; /**< User-space: "Handle" to pass to mmap() */
574 /**< Kernel-space: kernel-virtual address */
575 int mtrr; /**< MTRR slot used */
578 typedef struct drm_local_map drm_local_map_t;
583 struct drm_map_list {
584 struct list_head head; /**< list head */
585 struct drm_hash_item hash;
586 struct drm_local_map *map; /**< mapping */
588 struct drm_master *master;
592 * Context handle list
594 struct drm_ctx_list {
595 struct list_head head; /**< list head */
596 drm_context_t handle; /**< context handle */
597 struct drm_file *tag; /**< associated fd private data */
600 /* location of GART table */
601 #define DRM_ATI_GART_MAIN 1
602 #define DRM_ATI_GART_FB 2
604 #define DRM_ATI_GART_PCI 1
605 #define DRM_ATI_GART_PCIE 2
606 #define DRM_ATI_GART_IGP 3
608 struct drm_ati_pcigart_info {
609 int gart_table_location;
613 dma_addr_t table_mask;
614 struct drm_dma_handle *table_handle;
615 struct drm_local_map mapping;
620 * GEM specific mm private for tracking GEM objects
623 struct drm_vma_offset_manager vma_manager;
627 * This structure defines the drm_mm memory object, which will be used by the
628 * DRM for its buffer objects.
630 struct drm_gem_object {
631 /** Reference count of this object */
632 struct kref refcount;
634 /** Handle count of this object. Each handle also holds a reference */
635 atomic_t handle_count; /* number of handles on this object */
637 /** Related drm device */
638 struct drm_device *dev;
640 /** File representing the shmem storage */
643 /* Mapping info for this object */
644 struct drm_vma_offset_node vma_node;
647 * Size of the object, in bytes. Immutable over the object's
653 * Global name for this object, starts at 1. 0 means unnamed.
654 * Access is covered by the object_name_lock in the related drm_device
659 * Memory domains. These monitor which caches contain read/write data
660 * related to the object. When transitioning from one set of domains
661 * to another, the driver is called to ensure that caches are suitably
662 * flushed and invalidated
664 uint32_t read_domains;
665 uint32_t write_domain;
668 * While validating an exec operation, the
669 * new read/write domain values are computed here.
670 * They will be transferred to the above values
671 * at the point that any cache flushing occurs
673 uint32_t pending_read_domains;
674 uint32_t pending_write_domain;
676 void *driver_private;
678 /* dma buf exported from this GEM object */
679 struct dma_buf *export_dma_buf;
681 /* dma buf attachment backing this object */
682 struct dma_buf_attachment *import_attach;
685 #include <drm/drm_crtc.h>
687 /* per-master structure */
690 struct kref refcount; /* refcount for this master */
692 struct list_head head; /**< each minor contains a list of masters */
693 struct drm_minor *minor; /**< link back to minor we are a master for */
695 char *unique; /**< Unique identifier: e.g., busid */
696 int unique_len; /**< Length of unique field */
697 int unique_size; /**< amount allocated */
699 int blocked; /**< Blocked due to VC switch? */
701 /** \name Authentication */
703 struct drm_open_hash magiclist;
704 struct list_head magicfree;
707 struct drm_lock_data lock; /**< Information on hardware lock */
709 void *driver_priv; /**< Private structure for driver to use */
712 /* Size of ringbuffer for vblank timestamps. Just double-buffer
713 * in initial implementation.
715 #define DRM_VBLANKTIME_RBSIZE 2
717 /* Flags and return codes for get_vblank_timestamp() driver function. */
718 #define DRM_CALLED_FROM_VBLIRQ 1
719 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
720 #define DRM_VBLANKTIME_INVBL (1 << 1)
722 /* get_scanout_position() return flags */
723 #define DRM_SCANOUTPOS_VALID (1 << 0)
724 #define DRM_SCANOUTPOS_INVBL (1 << 1)
725 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
729 int (*get_irq)(struct drm_device *dev);
730 const char *(*get_name)(struct drm_device *dev);
731 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
732 int (*set_unique)(struct drm_device *dev, struct drm_master *master,
733 struct drm_unique *unique);
734 int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
735 /* hooks that are for PCI */
736 int (*agp_init)(struct drm_device *dev);
737 void (*agp_destroy)(struct drm_device *dev);
742 * DRM driver structure. This structure represent the common code for
743 * a family of cards. There will one drm_device for each card present
747 int (*load) (struct drm_device *, unsigned long flags);
748 int (*firstopen) (struct drm_device *);
749 int (*open) (struct drm_device *, struct drm_file *);
750 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
751 void (*postclose) (struct drm_device *, struct drm_file *);
752 void (*lastclose) (struct drm_device *);
753 int (*unload) (struct drm_device *);
754 int (*suspend) (struct drm_device *, pm_message_t state);
755 int (*resume) (struct drm_device *);
756 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
757 int (*dma_quiescent) (struct drm_device *);
758 int (*context_dtor) (struct drm_device *dev, int context);
761 * get_vblank_counter - get raw hardware vblank counter
763 * @crtc: counter to fetch
765 * Driver callback for fetching a raw hardware vblank counter for @crtc.
766 * If a device doesn't have a hardware counter, the driver can simply
767 * return the value of drm_vblank_count. The DRM core will account for
768 * missed vblank events while interrupts where disabled based on system
771 * Wraparound handling and loss of events due to modesetting is dealt
772 * with in the DRM core code.
775 * Raw vblank counter value.
777 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
780 * enable_vblank - enable vblank interrupt events
782 * @crtc: which irq to enable
784 * Enable vblank interrupts for @crtc. If the device doesn't have
785 * a hardware vblank counter, this routine should be a no-op, since
786 * interrupts will have to stay on to keep the count accurate.
789 * Zero on success, appropriate errno if the given @crtc's vblank
790 * interrupt cannot be enabled.
792 int (*enable_vblank) (struct drm_device *dev, int crtc);
795 * disable_vblank - disable vblank interrupt events
797 * @crtc: which irq to enable
799 * Disable vblank interrupts for @crtc. If the device doesn't have
800 * a hardware vblank counter, this routine should be a no-op, since
801 * interrupts will have to stay on to keep the count accurate.
803 void (*disable_vblank) (struct drm_device *dev, int crtc);
806 * Called by \c drm_device_is_agp. Typically used to determine if a
807 * card is really attached to AGP or not.
809 * \param dev DRM device handle
812 * One of three values is returned depending on whether or not the
813 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
814 * (return of 1), or may or may not be AGP (return of 2).
816 int (*device_is_agp) (struct drm_device *dev);
819 * Called by vblank timestamping code.
821 * Return the current display scanout position from a crtc.
823 * \param dev DRM device.
824 * \param crtc Id of the crtc to query.
825 * \param *vpos Target location for current vertical scanout position.
826 * \param *hpos Target location for current horizontal scanout position.
828 * Returns vpos as a positive number while in active scanout area.
829 * Returns vpos as a negative number inside vblank, counting the number
830 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
831 * until start of active scanout / end of vblank."
833 * \return Flags, or'ed together as follows:
835 * DRM_SCANOUTPOS_VALID = Query successful.
836 * DRM_SCANOUTPOS_INVBL = Inside vblank.
837 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
838 * this flag means that returned position may be offset by a constant
839 * but unknown small number of scanlines wrt. real scanout position.
842 int (*get_scanout_position) (struct drm_device *dev, int crtc,
843 int *vpos, int *hpos);
846 * Called by \c drm_get_last_vbltimestamp. Should return a precise
847 * timestamp when the most recent VBLANK interval ended or will end.
849 * Specifically, the timestamp in @vblank_time should correspond as
850 * closely as possible to the time when the first video scanline of
851 * the video frame after the end of VBLANK will start scanning out,
852 * the time immediately after end of the VBLANK interval. If the
853 * @crtc is currently inside VBLANK, this will be a time in the future.
854 * If the @crtc is currently scanning out a frame, this will be the
855 * past start time of the current scanout. This is meant to adhere
856 * to the OpenML OML_sync_control extension specification.
858 * \param dev dev DRM device handle.
859 * \param crtc crtc for which timestamp should be returned.
860 * \param *max_error Maximum allowable timestamp error in nanoseconds.
861 * Implementation should strive to provide timestamp
862 * with an error of at most *max_error nanoseconds.
863 * Returns true upper bound on error for timestamp.
864 * \param *vblank_time Target location for returned vblank timestamp.
865 * \param flags 0 = Defaults, no special treatment needed.
866 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
867 * irq handler. Some drivers need to apply some workarounds
868 * for gpu-specific vblank irq quirks if flag is set.
871 * Zero if timestamping isn't supported in current display mode or a
872 * negative number on failure. A positive status code on success,
873 * which describes how the vblank_time timestamp was computed.
875 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
877 struct timeval *vblank_time,
880 /* these have to be filled in */
882 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
883 void (*irq_preinstall) (struct drm_device *dev);
884 int (*irq_postinstall) (struct drm_device *dev);
885 void (*irq_uninstall) (struct drm_device *dev);
887 /* Master routines */
888 int (*master_create)(struct drm_device *dev, struct drm_master *master);
889 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
891 * master_set is called whenever the minor master is set.
892 * master_drop is called whenever the minor master is dropped.
895 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
897 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
900 int (*debugfs_init)(struct drm_minor *minor);
901 void (*debugfs_cleanup)(struct drm_minor *minor);
904 * Driver-specific constructor for drm_gem_objects, to set up
905 * obj->driver_private.
907 * Returns 0 on success.
909 int (*gem_init_object) (struct drm_gem_object *obj);
910 void (*gem_free_object) (struct drm_gem_object *obj);
911 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
912 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
915 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
916 int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
917 uint32_t handle, uint32_t flags, int *prime_fd);
918 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
919 int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
920 int prime_fd, uint32_t *handle);
921 /* export GEM -> dmabuf */
922 struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
923 struct drm_gem_object *obj, int flags);
924 /* import dmabuf -> GEM */
925 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
926 struct dma_buf *dma_buf);
927 /* low-level interface used by drm_gem_prime_{import,export} */
928 int (*gem_prime_pin)(struct drm_gem_object *obj);
929 void (*gem_prime_unpin)(struct drm_gem_object *obj);
930 struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj);
931 struct drm_gem_object *(*gem_prime_import_sg_table)(
932 struct drm_device *dev, size_t size,
933 struct sg_table *sgt);
934 void *(*gem_prime_vmap)(struct drm_gem_object *obj);
935 void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr);
936 int (*gem_prime_mmap)(struct drm_gem_object *obj,
937 struct vm_area_struct *vma);
939 /* vga arb irq handler */
940 void (*vgaarb_irq)(struct drm_device *dev, bool state);
942 /* dumb alloc support */
943 int (*dumb_create)(struct drm_file *file_priv,
944 struct drm_device *dev,
945 struct drm_mode_create_dumb *args);
946 int (*dumb_map_offset)(struct drm_file *file_priv,
947 struct drm_device *dev, uint32_t handle,
949 int (*dumb_destroy)(struct drm_file *file_priv,
950 struct drm_device *dev,
953 /* Driver private ops for this object */
954 const struct vm_operations_struct *gem_vm_ops;
965 const struct drm_ioctl_desc *ioctls;
967 const struct file_operations *fops;
969 struct pci_driver *pci;
970 struct platform_device *platform_device;
971 struct usb_driver *usb;
975 /* List of devices hanging off this driver */
976 struct list_head device_list;
979 #define DRM_MINOR_UNASSIGNED 0
980 #define DRM_MINOR_LEGACY 1
981 #define DRM_MINOR_CONTROL 2
982 #define DRM_MINOR_RENDER 3
986 * debugfs node list. This structure represents a debugfs file to
987 * be created by the drm core
989 struct drm_debugfs_list {
990 const char *name; /** file name */
991 int (*show)(struct seq_file*, void*); /** show callback */
992 u32 driver_features; /**< Required driver features for this entry */
996 * debugfs node structure. This structure represents a debugfs file.
998 struct drm_debugfs_node {
999 struct list_head list;
1000 struct drm_minor *minor;
1001 struct drm_debugfs_list *debugfs_ent;
1002 struct dentry *dent;
1006 * Info file list entry. This structure represents a debugfs or proc file to
1007 * be created by the drm core
1009 struct drm_info_list {
1010 const char *name; /** file name */
1011 int (*show)(struct seq_file*, void*); /** show callback */
1012 u32 driver_features; /**< Required driver features for this entry */
1017 * debugfs node structure. This structure represents a debugfs file.
1019 struct drm_info_node {
1020 struct list_head list;
1021 struct drm_minor *minor;
1022 const struct drm_info_list *info_ent;
1023 struct dentry *dent;
1027 * DRM minor structure. This structure represents a drm minor number.
1030 int index; /**< Minor device number */
1031 int type; /**< Control or render */
1032 dev_t device; /**< Device number for mknod */
1033 struct device kdev; /**< Linux device */
1034 struct drm_device *dev;
1036 struct proc_dir_entry *proc_root; /**< proc directory entry */
1037 struct drm_info_node proc_nodes;
1038 struct dentry *debugfs_root;
1040 struct list_head debugfs_list;
1041 struct mutex debugfs_lock; /* Protects debugfs_list. */
1043 struct drm_master *master; /* currently active master for this node */
1044 struct list_head master_list;
1045 struct drm_mode_group mode_group;
1048 /* mode specified on the command line */
1049 struct drm_cmdline_mode {
1051 bool refresh_specified;
1060 enum drm_connector_force force;
1064 struct drm_pending_vblank_event {
1065 struct drm_pending_event base;
1067 struct drm_event_vblank event;
1071 * DRM device structure. This structure represent a complete card that
1072 * may contain multiple heads.
1075 struct list_head driver_item; /**< list of devices per driver */
1076 char *devname; /**< For /proc/interrupts */
1077 int if_version; /**< Highest interface version set */
1081 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1082 struct mutex struct_mutex; /**< For others */
1085 /** \name Usage Counters */
1087 int open_count; /**< Outstanding files open */
1088 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
1089 atomic_t vma_count; /**< Outstanding vma areas open */
1090 int buf_use; /**< Buffers in use -- cannot alloc */
1091 atomic_t buf_alloc; /**< Buffer allocation in progress */
1094 /** \name Performance counters */
1096 unsigned long counters;
1097 enum drm_stat_type types[15];
1098 atomic_t counts[15];
1101 struct list_head filelist;
1103 /** \name Memory management */
1105 struct list_head maplist; /**< Linked list of regions */
1106 int map_count; /**< Number of mappable regions */
1107 struct drm_open_hash map_hash; /**< User token hash table for maps */
1109 /** \name Context handle management */
1111 struct list_head ctxlist; /**< Linked list of context handles */
1112 int ctx_count; /**< Number of context handles */
1113 struct mutex ctxlist_mutex; /**< For ctxlist */
1117 struct list_head vmalist; /**< List of vmas (for debugging) */
1121 /** \name DMA support */
1123 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1126 /** \name Context support */
1128 int irq_enabled; /**< True if irq handler is enabled */
1129 __volatile__ long context_flag; /**< Context swapping flag */
1130 int last_context; /**< Last current context */
1133 struct work_struct work;
1134 /** \name VBLANK IRQ support */
1138 * At load time, disabling the vblank interrupt won't be allowed since
1139 * old clients may not call the modeset ioctl and therefore misbehave.
1140 * Once the modeset ioctl *has* been called though, we can safely
1141 * disable them when unused.
1143 int vblank_disable_allowed;
1145 wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */
1146 atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1147 struct timeval *_vblank_time; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1148 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1149 spinlock_t vbl_lock;
1150 atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */
1151 u32 *last_vblank; /* protected by dev->vbl_lock, used */
1152 /* for wraparound handling */
1153 int *vblank_enabled; /* so we don't call enable more than
1155 int *vblank_inmodeset; /* Display driver is setting mode */
1156 u32 *last_vblank_wait; /* Last vblank seqno waited per CRTC */
1157 struct timer_list vblank_disable_timer;
1159 u32 max_vblank_count; /**< size of vblank counter register */
1164 struct list_head vblank_event_list;
1165 spinlock_t event_lock;
1169 struct drm_agp_head *agp; /**< AGP data */
1171 struct device *dev; /**< Device structure */
1172 struct pci_dev *pdev; /**< PCI device structure */
1173 int pci_vendor; /**< PCI vendor id */
1174 int pci_device; /**< PCI device id */
1176 struct pci_controller *hose;
1179 struct platform_device *platformdev; /**< Platform device struture */
1180 struct usb_device *usbdev;
1182 struct drm_sg_mem *sg; /**< Scatter gather memory */
1183 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1184 void *dev_private; /**< device private data */
1186 struct address_space *dev_mapping;
1187 struct drm_sigdata sigdata; /**< For block_all_signals */
1190 struct drm_driver *driver;
1191 struct drm_local_map *agp_buffer_map;
1192 unsigned int agp_buffer_token;
1193 struct drm_minor *control; /**< Control node for card */
1194 struct drm_minor *primary; /**< render type primary screen head */
1196 struct drm_mode_config mode_config; /**< Current mode config */
1198 /** \name GEM information */
1200 spinlock_t object_name_lock;
1201 struct idr object_name_idr;
1203 int switch_power_state;
1205 atomic_t unplugged; /* device has been unplugged or gone away */
1208 #define DRM_SWITCH_POWER_ON 0
1209 #define DRM_SWITCH_POWER_OFF 1
1210 #define DRM_SWITCH_POWER_CHANGING 2
1212 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1215 return ((dev->driver->driver_features & feature) ? 1 : 0);
1218 static inline int drm_dev_to_irq(struct drm_device *dev)
1220 return dev->driver->bus->get_irq(dev);
1224 static inline int drm_core_has_MTRR(struct drm_device *dev)
1226 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1229 #define drm_core_has_MTRR(dev) (0)
1232 static inline void drm_device_set_unplugged(struct drm_device *dev)
1235 atomic_set(&dev->unplugged, 1);
1238 static inline int drm_device_is_unplugged(struct drm_device *dev)
1240 int ret = atomic_read(&dev->unplugged);
1245 static inline bool drm_modeset_is_locked(struct drm_device *dev)
1247 return mutex_is_locked(&dev->mode_config.mutex);
1250 /******************************************************************/
1251 /** \name Internal function definitions */
1254 /* Driver support (drm_drv.h) */
1255 extern long drm_ioctl(struct file *filp,
1256 unsigned int cmd, unsigned long arg);
1257 extern long drm_compat_ioctl(struct file *filp,
1258 unsigned int cmd, unsigned long arg);
1259 extern int drm_lastclose(struct drm_device *dev);
1261 /* Device support (drm_fops.h) */
1262 extern struct mutex drm_global_mutex;
1263 extern int drm_open(struct inode *inode, struct file *filp);
1264 extern int drm_stub_open(struct inode *inode, struct file *filp);
1265 extern ssize_t drm_read(struct file *filp, char __user *buffer,
1266 size_t count, loff_t *offset);
1267 extern int drm_release(struct inode *inode, struct file *filp);
1269 /* Mapping support (drm_vm.h) */
1270 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1271 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1272 extern void drm_vm_open_locked(struct drm_device *dev, struct vm_area_struct *vma);
1273 extern void drm_vm_close_locked(struct drm_device *dev, struct vm_area_struct *vma);
1274 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1276 /* Memory management support (drm_memory.h) */
1277 #include <drm/drm_memory.h>
1279 /* Misc. IOCTL support (drm_ioctl.h) */
1280 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1281 struct drm_file *file_priv);
1282 extern int drm_getunique(struct drm_device *dev, void *data,
1283 struct drm_file *file_priv);
1284 extern int drm_setunique(struct drm_device *dev, void *data,
1285 struct drm_file *file_priv);
1286 extern int drm_getmap(struct drm_device *dev, void *data,
1287 struct drm_file *file_priv);
1288 extern int drm_getclient(struct drm_device *dev, void *data,
1289 struct drm_file *file_priv);
1290 extern int drm_getstats(struct drm_device *dev, void *data,
1291 struct drm_file *file_priv);
1292 extern int drm_getcap(struct drm_device *dev, void *data,
1293 struct drm_file *file_priv);
1294 extern int drm_setversion(struct drm_device *dev, void *data,
1295 struct drm_file *file_priv);
1296 extern int drm_noop(struct drm_device *dev, void *data,
1297 struct drm_file *file_priv);
1299 /* Context IOCTL support (drm_context.h) */
1300 extern int drm_resctx(struct drm_device *dev, void *data,
1301 struct drm_file *file_priv);
1302 extern int drm_addctx(struct drm_device *dev, void *data,
1303 struct drm_file *file_priv);
1304 extern int drm_getctx(struct drm_device *dev, void *data,
1305 struct drm_file *file_priv);
1306 extern int drm_switchctx(struct drm_device *dev, void *data,
1307 struct drm_file *file_priv);
1308 extern int drm_newctx(struct drm_device *dev, void *data,
1309 struct drm_file *file_priv);
1310 extern int drm_rmctx(struct drm_device *dev, void *data,
1311 struct drm_file *file_priv);
1313 extern void drm_legacy_ctxbitmap_init(struct drm_device *dev);
1314 extern void drm_legacy_ctxbitmap_cleanup(struct drm_device *dev);
1315 extern void drm_legacy_ctxbitmap_release(struct drm_device *dev,
1316 struct drm_file *file_priv);
1318 extern int drm_setsareactx(struct drm_device *dev, void *data,
1319 struct drm_file *file_priv);
1320 extern int drm_getsareactx(struct drm_device *dev, void *data,
1321 struct drm_file *file_priv);
1323 /* Authentication IOCTL support (drm_auth.h) */
1324 extern int drm_getmagic(struct drm_device *dev, void *data,
1325 struct drm_file *file_priv);
1326 extern int drm_authmagic(struct drm_device *dev, void *data,
1327 struct drm_file *file_priv);
1328 extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic);
1330 /* Cache management (drm_cache.c) */
1331 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1332 void drm_clflush_sg(struct sg_table *st);
1333 void drm_clflush_virt_range(char *addr, unsigned long length);
1335 /* Locking IOCTL support (drm_lock.h) */
1336 extern int drm_lock(struct drm_device *dev, void *data,
1337 struct drm_file *file_priv);
1338 extern int drm_unlock(struct drm_device *dev, void *data,
1339 struct drm_file *file_priv);
1340 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1341 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1342 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1345 * These are exported to drivers so that they can implement fencing using
1346 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1349 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1351 /* Buffer management support (drm_bufs.h) */
1352 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1353 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1354 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1355 unsigned int size, enum drm_map_type type,
1356 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1357 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1358 struct drm_file *file_priv);
1359 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1360 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1361 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1362 struct drm_file *file_priv);
1363 extern int drm_addbufs(struct drm_device *dev, void *data,
1364 struct drm_file *file_priv);
1365 extern int drm_infobufs(struct drm_device *dev, void *data,
1366 struct drm_file *file_priv);
1367 extern int drm_markbufs(struct drm_device *dev, void *data,
1368 struct drm_file *file_priv);
1369 extern int drm_freebufs(struct drm_device *dev, void *data,
1370 struct drm_file *file_priv);
1371 extern int drm_mapbufs(struct drm_device *dev, void *data,
1372 struct drm_file *file_priv);
1374 /* DMA support (drm_dma.h) */
1375 extern int drm_legacy_dma_setup(struct drm_device *dev);
1376 extern void drm_legacy_dma_takedown(struct drm_device *dev);
1377 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1378 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1379 struct drm_file *filp);
1381 /* IRQ support (drm_irq.h) */
1382 extern int drm_control(struct drm_device *dev, void *data,
1383 struct drm_file *file_priv);
1384 extern int drm_irq_install(struct drm_device *dev);
1385 extern int drm_irq_uninstall(struct drm_device *dev);
1387 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1388 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1389 struct drm_file *filp);
1390 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1391 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1392 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1393 struct timeval *vblanktime);
1394 extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
1395 struct drm_pending_vblank_event *e);
1396 extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1397 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1398 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1399 extern void drm_vblank_off(struct drm_device *dev, int crtc);
1400 extern void drm_vblank_cleanup(struct drm_device *dev);
1401 extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1402 struct timeval *tvblank, unsigned flags);
1403 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1404 int crtc, int *max_error,
1405 struct timeval *vblank_time,
1407 struct drm_crtc *refcrtc);
1408 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
1411 drm_mode_parse_command_line_for_connector(const char *mode_option,
1412 struct drm_connector *connector,
1413 struct drm_cmdline_mode *mode);
1415 extern struct drm_display_mode *
1416 drm_mode_create_from_cmdline_mode(struct drm_device *dev,
1417 struct drm_cmdline_mode *cmd);
1419 extern int drm_display_mode_from_videomode(const struct videomode *vm,
1420 struct drm_display_mode *dmode);
1421 extern int of_get_drm_display_mode(struct device_node *np,
1422 struct drm_display_mode *dmode,
1425 /* Modesetting support */
1426 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1427 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1428 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1429 struct drm_file *file_priv);
1431 /* AGP/GART support (drm_agpsupport.h) */
1433 #include <drm/drm_agpsupport.h>
1435 /* Stub support (drm_stub.h) */
1436 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1437 struct drm_file *file_priv);
1438 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1439 struct drm_file *file_priv);
1440 struct drm_master *drm_master_create(struct drm_minor *minor);
1441 extern struct drm_master *drm_master_get(struct drm_master *master);
1442 extern void drm_master_put(struct drm_master **master);
1444 extern void drm_put_dev(struct drm_device *dev);
1445 extern int drm_put_minor(struct drm_minor **minor);
1446 extern void drm_unplug_dev(struct drm_device *dev);
1447 extern unsigned int drm_debug;
1449 extern unsigned int drm_vblank_offdelay;
1450 extern unsigned int drm_timestamp_precision;
1451 extern unsigned int drm_timestamp_monotonic;
1453 extern struct class *drm_class;
1454 extern struct proc_dir_entry *drm_proc_root;
1455 extern struct dentry *drm_debugfs_root;
1457 extern struct idr drm_minors_idr;
1459 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1461 /* Proc support (drm_proc.h) */
1462 extern int drm_proc_init(struct drm_minor *minor, struct proc_dir_entry *root);
1463 extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1465 /* Debugfs support */
1466 #if defined(CONFIG_DEBUG_FS)
1467 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1468 struct dentry *root);
1469 extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1470 struct dentry *root, struct drm_minor *minor);
1471 extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1472 struct drm_minor *minor);
1473 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1476 /* Info file support */
1477 extern int drm_name_info(struct seq_file *m, void *data);
1478 extern int drm_vm_info(struct seq_file *m, void *data);
1479 extern int drm_bufs_info(struct seq_file *m, void *data);
1480 extern int drm_vblank_info(struct seq_file *m, void *data);
1481 extern int drm_clients_info(struct seq_file *m, void* data);
1482 extern int drm_gem_name_info(struct seq_file *m, void *data);
1485 extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
1486 struct drm_gem_object *obj, int flags);
1487 extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
1488 struct drm_file *file_priv, uint32_t handle, uint32_t flags,
1490 extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
1491 struct dma_buf *dma_buf);
1492 extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
1493 struct drm_file *file_priv, int prime_fd, uint32_t *handle);
1495 extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
1496 struct drm_file *file_priv);
1497 extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data,
1498 struct drm_file *file_priv);
1500 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
1501 dma_addr_t *addrs, int max_pages);
1502 extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages);
1503 extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
1505 int drm_gem_dumb_destroy(struct drm_file *file,
1506 struct drm_device *dev,
1509 void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv);
1510 void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv);
1511 int drm_prime_lookup_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t *handle);
1512 void drm_prime_remove_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf);
1514 int drm_prime_add_dma_buf(struct drm_device *dev, struct drm_gem_object *obj);
1515 int drm_prime_lookup_obj(struct drm_device *dev, struct dma_buf *buf,
1516 struct drm_gem_object **obj);
1519 extern int drm_vma_info(struct seq_file *m, void *data);
1522 /* Scatter Gather Support (drm_scatter.h) */
1523 extern void drm_legacy_sg_cleanup(struct drm_device *dev);
1524 extern int drm_sg_alloc(struct drm_device *dev, void *data,
1525 struct drm_file *file_priv);
1526 extern int drm_sg_free(struct drm_device *dev, void *data,
1527 struct drm_file *file_priv);
1529 /* ATI PCIGART support (ati_pcigart.h) */
1530 extern int drm_ati_pcigart_init(struct drm_device *dev,
1531 struct drm_ati_pcigart_info * gart_info);
1532 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1533 struct drm_ati_pcigart_info * gart_info);
1535 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1537 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1538 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1540 /* sysfs support (drm_sysfs.c) */
1541 struct drm_sysfs_class;
1542 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1543 extern void drm_sysfs_destroy(void);
1544 extern int drm_sysfs_device_add(struct drm_minor *minor);
1545 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1546 extern void drm_sysfs_device_remove(struct drm_minor *minor);
1547 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1548 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1550 /* Graphics Execution Manager library functions (drm_gem.c) */
1551 int drm_gem_init(struct drm_device *dev);
1552 void drm_gem_destroy(struct drm_device *dev);
1553 void drm_gem_object_release(struct drm_gem_object *obj);
1554 void drm_gem_object_free(struct kref *kref);
1555 struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1557 int drm_gem_object_init(struct drm_device *dev,
1558 struct drm_gem_object *obj, size_t size);
1559 void drm_gem_private_object_init(struct drm_device *dev,
1560 struct drm_gem_object *obj, size_t size);
1561 void drm_gem_object_handle_free(struct drm_gem_object *obj);
1562 void drm_gem_vm_open(struct vm_area_struct *vma);
1563 void drm_gem_vm_close(struct vm_area_struct *vma);
1564 int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,
1565 struct vm_area_struct *vma);
1566 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1568 #include <drm/drm_global.h>
1571 drm_gem_object_reference(struct drm_gem_object *obj)
1573 kref_get(&obj->refcount);
1577 drm_gem_object_unreference(struct drm_gem_object *obj)
1580 kref_put(&obj->refcount, drm_gem_object_free);
1584 drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1586 if (obj && !atomic_add_unless(&obj->refcount.refcount, -1, 1)) {
1587 struct drm_device *dev = obj->dev;
1589 mutex_lock(&dev->struct_mutex);
1590 if (likely(atomic_dec_and_test(&obj->refcount.refcount)))
1591 drm_gem_object_free(&obj->refcount);
1592 mutex_unlock(&dev->struct_mutex);
1596 int drm_gem_handle_create(struct drm_file *file_priv,
1597 struct drm_gem_object *obj,
1599 int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
1602 drm_gem_object_handle_reference(struct drm_gem_object *obj)
1604 drm_gem_object_reference(obj);
1605 atomic_inc(&obj->handle_count);
1609 drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj)
1614 if (atomic_read(&obj->handle_count) == 0)
1618 * Must bump handle count first as this may be the last
1619 * ref, in which case the object would disappear before we
1620 * checked for a name
1623 if (atomic_dec_and_test(&obj->handle_count))
1624 drm_gem_object_handle_free(obj);
1625 drm_gem_object_unreference_unlocked(obj);
1628 void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
1629 int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
1631 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1632 struct drm_file *filp,
1634 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1635 struct drm_file *file_priv);
1636 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1637 struct drm_file *file_priv);
1638 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1639 struct drm_file *file_priv);
1640 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1641 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1643 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1644 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1645 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1647 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1650 struct drm_map_list *_entry;
1651 list_for_each_entry(_entry, &dev->maplist, head)
1652 if (_entry->user_token == token)
1657 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1661 #include <drm/drm_mem_util.h>
1663 extern int drm_fill_in_dev(struct drm_device *dev,
1664 const struct pci_device_id *ent,
1665 struct drm_driver *driver);
1666 int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
1670 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1672 if (dev->driver->device_is_agp != NULL) {
1673 int err = (*dev->driver->device_is_agp) (dev);
1680 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1683 extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1684 extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1685 extern int drm_get_pci_dev(struct pci_dev *pdev,
1686 const struct pci_device_id *ent,
1687 struct drm_driver *driver);
1689 #define DRM_PCIE_SPEED_25 1
1690 #define DRM_PCIE_SPEED_50 2
1691 #define DRM_PCIE_SPEED_80 4
1693 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
1695 /* platform section */
1696 extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1697 extern void drm_platform_exit(struct drm_driver *driver, struct platform_device *platform_device);
1699 extern int drm_get_platform_dev(struct platform_device *pdev,
1700 struct drm_driver *driver);
1702 /* returns true if currently okay to sleep */
1703 static __inline__ bool drm_can_sleep(void)
1705 if (in_atomic() || in_dbg_master() || irqs_disabled())
1710 #endif /* __KERNEL__ */