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/init.h>
49 #include <linux/file.h>
50 #include <linux/platform_device.h>
51 #include <linux/pci.h>
52 #include <linux/jiffies.h>
53 #include <linux/dma-mapping.h>
55 #include <linux/cdev.h>
56 #include <linux/mutex.h>
58 #include <linux/slab.h>
59 #if defined(__alpha__) || defined(__powerpc__)
60 #include <asm/pgtable.h> /* For pte_wrprotect */
63 #include <asm/uaccess.h>
64 #include <linux/types.h>
65 #include <linux/agp_backend.h>
66 #include <linux/workqueue.h>
67 #include <linux/poll.h>
68 #include <asm/pgalloc.h>
70 #include <drm/drm_sarea.h>
71 #include <drm/drm_vma_manager.h>
73 #include <linux/idr.h>
75 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
85 #include <drm/drm_os_linux.h>
86 #include <drm/drm_hashtab.h>
87 #include <drm/drm_mm.h>
89 #define DRM_UT_CORE 0x01
90 #define DRM_UT_DRIVER 0x02
91 #define DRM_UT_KMS 0x04
92 #define DRM_UT_PRIME 0x08
94 * Three debug levels are defined.
95 * drm_core, drm_driver, drm_kms
96 * drm_core level can be used in the generic drm code. For example:
97 * drm_ioctl, drm_mm, drm_memory
98 * The macro definition of DRM_DEBUG is used.
99 * DRM_DEBUG(fmt, args...)
100 * The debug info by using the DRM_DEBUG can be obtained by adding
101 * the boot option of "drm.debug=1".
103 * drm_driver level can be used in the specific drm driver. It is used
104 * to add the debug info related with the drm driver. For example:
105 * i915_drv, i915_dma, i915_gem, radeon_drv,
106 * The macro definition of DRM_DEBUG_DRIVER can be used.
107 * DRM_DEBUG_DRIVER(fmt, args...)
108 * The debug info by using the DRM_DEBUG_DRIVER can be obtained by
109 * adding the boot option of "drm.debug=0x02"
111 * drm_kms level can be used in the KMS code related with specific drm driver.
112 * It is used to add the debug info related with KMS mode. For example:
113 * the connector/crtc ,
114 * The macro definition of DRM_DEBUG_KMS can be used.
115 * DRM_DEBUG_KMS(fmt, args...)
116 * The debug info by using the DRM_DEBUG_KMS can be obtained by
117 * adding the boot option of "drm.debug=0x04"
119 * If we add the boot option of "drm.debug=0x06", we can get the debug info by
120 * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
121 * If we add the boot option of "drm.debug=0x05", we can get the debug info by
122 * using the DRM_DEBUG_KMS and DRM_DEBUG.
125 extern __printf(4, 5)
126 void drm_ut_debug_printk(unsigned int request_level,
128 const char *function_name,
129 const char *format, ...);
130 extern __printf(2, 3)
131 int drm_err(const char *func, const char *format, ...);
133 /***********************************************************************/
134 /** \name DRM template customization defaults */
137 /* driver capabilities and requirements mask */
138 #define DRIVER_USE_AGP 0x1
139 #define DRIVER_REQUIRE_AGP 0x2
140 #define DRIVER_PCI_DMA 0x8
141 #define DRIVER_SG 0x10
142 #define DRIVER_HAVE_DMA 0x20
143 #define DRIVER_HAVE_IRQ 0x40
144 #define DRIVER_IRQ_SHARED 0x80
145 #define DRIVER_GEM 0x1000
146 #define DRIVER_MODESET 0x2000
147 #define DRIVER_PRIME 0x4000
148 #define DRIVER_RENDER 0x8000
150 #define DRIVER_BUS_PCI 0x1
151 #define DRIVER_BUS_PLATFORM 0x2
152 #define DRIVER_BUS_USB 0x3
154 /***********************************************************************/
155 /** \name Begin the DRM... */
158 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
159 also include looping detection. */
161 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
162 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
163 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
165 #define DRM_MAP_HASH_OFFSET 0x10000000
169 /***********************************************************************/
170 /** \name Macros to make printk easier */
176 * \param fmt printf() like format string.
177 * \param arg arguments
179 #define DRM_ERROR(fmt, ...) \
180 drm_err(__func__, fmt, ##__VA_ARGS__)
182 #define DRM_INFO(fmt, ...) \
183 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
188 * \param fmt printf() like format string.
189 * \param arg arguments
192 #define DRM_DEBUG(fmt, args...) \
194 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
195 __func__, fmt, ##args); \
198 #define DRM_DEBUG_DRIVER(fmt, args...) \
200 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
201 __func__, fmt, ##args); \
203 #define DRM_DEBUG_KMS(fmt, args...) \
205 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
206 __func__, fmt, ##args); \
208 #define DRM_DEBUG_PRIME(fmt, args...) \
210 drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME, \
211 __func__, fmt, ##args); \
213 #define DRM_LOG(fmt, args...) \
215 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
216 NULL, fmt, ##args); \
218 #define DRM_LOG_KMS(fmt, args...) \
220 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
221 NULL, fmt, ##args); \
223 #define DRM_LOG_MODE(fmt, args...) \
225 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
226 NULL, fmt, ##args); \
228 #define DRM_LOG_DRIVER(fmt, args...) \
230 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
231 NULL, fmt, ##args); \
234 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
235 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
236 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
237 #define DRM_DEBUG(fmt, arg...) do { } while (0)
238 #define DRM_LOG(fmt, arg...) do { } while (0)
239 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
240 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
241 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
247 /***********************************************************************/
248 /** \name Internal types and structures */
251 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
253 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
256 * Test that the hardware lock is held by the caller, returning otherwise.
258 * \param dev DRM device.
259 * \param filp file pointer of the caller.
261 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
263 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
264 _file_priv->master->lock.file_priv != _file_priv) { \
265 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
266 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
267 _file_priv->master->lock.file_priv, _file_priv); \
273 * Ioctl function type.
275 * \param inode device inode.
276 * \param file_priv DRM file private pointer.
277 * \param cmd command.
278 * \param arg argument.
280 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
281 struct drm_file *file_priv);
283 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
286 #define DRM_IOCTL_NR(n) _IOC_NR(n)
287 #define DRM_MAJOR 226
290 #define DRM_MASTER 0x2
291 #define DRM_ROOT_ONLY 0x4
292 #define DRM_CONTROL_ALLOW 0x8
293 #define DRM_UNLOCKED 0x10
294 #define DRM_RENDER_ALLOW 0x20
296 struct drm_ioctl_desc {
300 unsigned int cmd_drv;
305 * Creates a driver or general drm_ioctl_desc array entry for the given
306 * ioctl, for use by drm_ioctl().
309 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
310 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
312 struct drm_magic_entry {
313 struct list_head head;
314 struct drm_hash_item hash_item;
315 struct drm_file *priv;
318 struct drm_vma_entry {
319 struct list_head head;
320 struct vm_area_struct *vma;
328 int idx; /**< Index into master buflist */
329 int total; /**< Buffer size */
330 int order; /**< log-base-2(total) */
331 int used; /**< Amount of buffer in use (for DMA) */
332 unsigned long offset; /**< Byte offset (used internally) */
333 void *address; /**< Address of buffer */
334 unsigned long bus_address; /**< Bus address of buffer */
335 struct drm_buf *next; /**< Kernel-only: used for free list */
336 __volatile__ int waiting; /**< On kernel DMA queue */
337 __volatile__ int pending; /**< On hardware DMA queue */
338 struct drm_file *file_priv; /**< Private of holding file descr */
339 int context; /**< Kernel queue for this buffer */
340 int while_locked; /**< Dispatch this buffer while locked */
348 } list; /**< Which list we're on */
350 int dev_priv_size; /**< Size of buffer private storage */
351 void *dev_private; /**< Per-buffer private storage */
354 /** bufs is one longer than it has to be */
355 struct drm_waitlist {
356 int count; /**< Number of possible buffers */
357 struct drm_buf **bufs; /**< List of pointers to buffers */
358 struct drm_buf **rp; /**< Read pointer */
359 struct drm_buf **wp; /**< Write pointer */
360 struct drm_buf **end; /**< End pointer */
361 spinlock_t read_lock;
362 spinlock_t write_lock;
365 struct drm_freelist {
366 int initialized; /**< Freelist in use */
367 atomic_t count; /**< Number of free buffers */
368 struct drm_buf *next; /**< End pointer */
370 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
371 int low_mark; /**< Low water mark */
372 int high_mark; /**< High water mark */
373 atomic_t wfh; /**< If waiting for high mark */
377 typedef struct drm_dma_handle {
384 * Buffer entry. There is one of this for each buffer size order.
386 struct drm_buf_entry {
387 int buf_size; /**< size */
388 int buf_count; /**< number of buffers */
389 struct drm_buf *buflist; /**< buffer list */
392 struct drm_dma_handle **seglist;
394 struct drm_freelist freelist;
397 /* Event queued up for userspace to read */
398 struct drm_pending_event {
399 struct drm_event *event;
400 struct list_head link;
401 struct drm_file *file_priv;
402 pid_t pid; /* pid of requester, no guarantee it's valid by the time
403 we deliver the event, for tracing only */
404 void (*destroy)(struct drm_pending_event *event);
407 /* initial implementaton using a linked list - todo hashtab */
408 struct drm_prime_file_private {
409 struct list_head head;
413 /** File private data */
419 unsigned long ioctl_count;
420 struct list_head lhead;
421 struct drm_minor *minor;
422 unsigned long lock_count;
424 /** Mapping of mm object handles to object pointers. */
425 struct idr object_idr;
426 /** Lock for synchronization of access to object_idr. */
427 spinlock_t table_lock;
432 int is_master; /* this file private is a master for a minor */
433 struct drm_master *master; /* master this node is currently associated with
434 N.B. not always minor->master */
436 /* true when the client has asked us to expose stereo 3D mode flags */
440 * fbs - List of framebuffers associated with this file.
442 * Protected by fbs_lock. Note that the fbs list holds a reference on
443 * the fb object to prevent it from untimely disappearing.
445 struct list_head fbs;
446 struct mutex fbs_lock;
448 wait_queue_head_t event_wait;
449 struct list_head event_list;
452 struct drm_prime_file_private prime;
457 atomic_t use_count; /**< Outstanding uses (+1) */
458 atomic_t finalization; /**< Finalization in progress */
459 atomic_t block_count; /**< Count of processes waiting */
460 atomic_t block_read; /**< Queue blocked for reads */
461 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
462 atomic_t block_write; /**< Queue blocked for writes */
463 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
464 atomic_t total_queued; /**< Total queued statistic */
465 atomic_t total_flushed; /**< Total flushes statistic */
466 atomic_t total_locks; /**< Total locks statistics */
467 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
468 struct drm_waitlist waitlist; /**< Pending buffers */
469 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
475 struct drm_lock_data {
476 struct drm_hw_lock *hw_lock; /**< Hardware lock */
477 /** Private of lock holder's file (NULL=kernel) */
478 struct drm_file *file_priv;
479 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
480 unsigned long lock_time; /**< Time of last lock in jiffies */
482 uint32_t kernel_waiters;
483 uint32_t user_waiters;
490 struct drm_device_dma {
492 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
493 int buf_count; /**< total number of buffers */
494 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
496 int page_count; /**< number of pages */
497 unsigned long *pagelist; /**< page list */
498 unsigned long byte_count;
500 _DRM_DMA_USE_AGP = 0x01,
501 _DRM_DMA_USE_SG = 0x02,
502 _DRM_DMA_USE_FB = 0x04,
503 _DRM_DMA_USE_PCI_RO = 0x08
509 * AGP memory entry. Stored as a doubly linked list.
512 unsigned long handle; /**< handle */
514 unsigned long bound; /**< address */
516 struct list_head head;
522 * \sa drm_agp_init() and drm_device::agp.
524 struct drm_agp_head {
525 DRM_AGP_KERN agp_info; /**< AGP device information */
526 struct list_head memory;
527 unsigned long mode; /**< AGP mode */
528 struct agp_bridge_data *bridge;
529 int enabled; /**< whether the AGP bus as been enabled */
530 int acquired; /**< whether the AGP device has been acquired */
533 int cant_use_aperture;
534 unsigned long page_mask;
538 * Scatter-gather memory.
541 unsigned long handle;
544 struct page **pagelist;
550 struct drm_hw_lock *lock;
555 * Kernel side of a mapping
557 struct drm_local_map {
558 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
559 unsigned long size; /**< Requested physical size (bytes) */
560 enum drm_map_type type; /**< Type of memory to map */
561 enum drm_map_flags flags; /**< Flags */
562 void *handle; /**< User-space: "Handle" to pass to mmap() */
563 /**< Kernel-space: kernel-virtual address */
564 int mtrr; /**< MTRR slot used */
567 typedef struct drm_local_map drm_local_map_t;
572 struct drm_map_list {
573 struct list_head head; /**< list head */
574 struct drm_hash_item hash;
575 struct drm_local_map *map; /**< mapping */
577 struct drm_master *master;
581 * Context handle list
583 struct drm_ctx_list {
584 struct list_head head; /**< list head */
585 drm_context_t handle; /**< context handle */
586 struct drm_file *tag; /**< associated fd private data */
589 /* location of GART table */
590 #define DRM_ATI_GART_MAIN 1
591 #define DRM_ATI_GART_FB 2
593 #define DRM_ATI_GART_PCI 1
594 #define DRM_ATI_GART_PCIE 2
595 #define DRM_ATI_GART_IGP 3
597 struct drm_ati_pcigart_info {
598 int gart_table_location;
602 dma_addr_t table_mask;
603 struct drm_dma_handle *table_handle;
604 struct drm_local_map mapping;
609 * GEM specific mm private for tracking GEM objects
612 struct drm_vma_offset_manager vma_manager;
616 * This structure defines the drm_mm memory object, which will be used by the
617 * DRM for its buffer objects.
619 struct drm_gem_object {
620 /** Reference count of this object */
621 struct kref refcount;
624 * handle_count - gem file_priv handle count of this object
626 * Each handle also holds a reference. Note that when the handle_count
627 * drops to 0 any global names (e.g. the id in the flink namespace) will
630 * Protected by dev->object_name_lock.
632 unsigned handle_count;
634 /** Related drm device */
635 struct drm_device *dev;
637 /** File representing the shmem storage */
640 /* Mapping info for this object */
641 struct drm_vma_offset_node vma_node;
644 * Size of the object, in bytes. Immutable over the object's
650 * Global name for this object, starts at 1. 0 means unnamed.
651 * Access is covered by the object_name_lock in the related drm_device
656 * Memory domains. These monitor which caches contain read/write data
657 * related to the object. When transitioning from one set of domains
658 * to another, the driver is called to ensure that caches are suitably
659 * flushed and invalidated
661 uint32_t read_domains;
662 uint32_t write_domain;
665 * While validating an exec operation, the
666 * new read/write domain values are computed here.
667 * They will be transferred to the above values
668 * at the point that any cache flushing occurs
670 uint32_t pending_read_domains;
671 uint32_t pending_write_domain;
674 * dma_buf - dma buf associated with this GEM object
676 * Pointer to the dma-buf associated with this gem object (either
677 * through importing or exporting). We break the resulting reference
678 * loop when the last gem handle for this object is released.
680 * Protected by obj->object_name_lock
682 struct dma_buf *dma_buf;
685 * import_attach - dma buf attachment backing this object
687 * Any foreign dma_buf imported as a gem object has this set to the
688 * attachment point for the device. This is invariant over the lifetime
691 * The driver's ->gem_free_object callback is responsible for cleaning
692 * up the dma_buf attachment and references acquired at import time.
694 * Note that the drm gem/prime core does not depend upon drivers setting
695 * this field any more. So for drivers where this doesn't make sense
696 * (e.g. virtual devices or a displaylink behind an usb bus) they can
697 * simply leave it as NULL.
699 struct dma_buf_attachment *import_attach;
702 #include <drm/drm_crtc.h>
704 /* per-master structure */
707 struct kref refcount; /* refcount for this master */
709 struct list_head head; /**< each minor contains a list of masters */
710 struct drm_minor *minor; /**< link back to minor we are a master for */
712 char *unique; /**< Unique identifier: e.g., busid */
713 int unique_len; /**< Length of unique field */
714 int unique_size; /**< amount allocated */
716 int blocked; /**< Blocked due to VC switch? */
718 /** \name Authentication */
720 struct drm_open_hash magiclist;
721 struct list_head magicfree;
724 struct drm_lock_data lock; /**< Information on hardware lock */
726 void *driver_priv; /**< Private structure for driver to use */
729 /* Size of ringbuffer for vblank timestamps. Just double-buffer
730 * in initial implementation.
732 #define DRM_VBLANKTIME_RBSIZE 2
734 /* Flags and return codes for get_vblank_timestamp() driver function. */
735 #define DRM_CALLED_FROM_VBLIRQ 1
736 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
737 #define DRM_VBLANKTIME_INVBL (1 << 1)
739 /* get_scanout_position() return flags */
740 #define DRM_SCANOUTPOS_VALID (1 << 0)
741 #define DRM_SCANOUTPOS_INVBL (1 << 1)
742 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
746 int (*get_irq)(struct drm_device *dev);
747 const char *(*get_name)(struct drm_device *dev);
748 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
749 int (*set_unique)(struct drm_device *dev, struct drm_master *master,
750 struct drm_unique *unique);
751 int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
752 /* hooks that are for PCI */
753 int (*agp_init)(struct drm_device *dev);
754 void (*agp_destroy)(struct drm_device *dev);
759 * DRM driver structure. This structure represent the common code for
760 * a family of cards. There will one drm_device for each card present
764 int (*load) (struct drm_device *, unsigned long flags);
765 int (*firstopen) (struct drm_device *);
766 int (*open) (struct drm_device *, struct drm_file *);
767 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
768 void (*postclose) (struct drm_device *, struct drm_file *);
769 void (*lastclose) (struct drm_device *);
770 int (*unload) (struct drm_device *);
771 int (*suspend) (struct drm_device *, pm_message_t state);
772 int (*resume) (struct drm_device *);
773 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
774 int (*dma_quiescent) (struct drm_device *);
775 int (*context_dtor) (struct drm_device *dev, int context);
778 * get_vblank_counter - get raw hardware vblank counter
780 * @crtc: counter to fetch
782 * Driver callback for fetching a raw hardware vblank counter for @crtc.
783 * If a device doesn't have a hardware counter, the driver can simply
784 * return the value of drm_vblank_count. The DRM core will account for
785 * missed vblank events while interrupts where disabled based on system
788 * Wraparound handling and loss of events due to modesetting is dealt
789 * with in the DRM core code.
792 * Raw vblank counter value.
794 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
797 * enable_vblank - enable vblank interrupt events
799 * @crtc: which irq to enable
801 * Enable vblank interrupts for @crtc. If the device doesn't have
802 * a hardware vblank counter, this routine should be a no-op, since
803 * interrupts will have to stay on to keep the count accurate.
806 * Zero on success, appropriate errno if the given @crtc's vblank
807 * interrupt cannot be enabled.
809 int (*enable_vblank) (struct drm_device *dev, int crtc);
812 * disable_vblank - disable vblank interrupt events
814 * @crtc: which irq to enable
816 * Disable vblank interrupts for @crtc. If the device doesn't have
817 * a hardware vblank counter, this routine should be a no-op, since
818 * interrupts will have to stay on to keep the count accurate.
820 void (*disable_vblank) (struct drm_device *dev, int crtc);
823 * Called by \c drm_device_is_agp. Typically used to determine if a
824 * card is really attached to AGP or not.
826 * \param dev DRM device handle
829 * One of three values is returned depending on whether or not the
830 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
831 * (return of 1), or may or may not be AGP (return of 2).
833 int (*device_is_agp) (struct drm_device *dev);
836 * Called by vblank timestamping code.
838 * Return the current display scanout position from a crtc.
840 * \param dev DRM device.
841 * \param crtc Id of the crtc to query.
842 * \param *vpos Target location for current vertical scanout position.
843 * \param *hpos Target location for current horizontal scanout position.
845 * Returns vpos as a positive number while in active scanout area.
846 * Returns vpos as a negative number inside vblank, counting the number
847 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
848 * until start of active scanout / end of vblank."
850 * \return Flags, or'ed together as follows:
852 * DRM_SCANOUTPOS_VALID = Query successful.
853 * DRM_SCANOUTPOS_INVBL = Inside vblank.
854 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
855 * this flag means that returned position may be offset by a constant
856 * but unknown small number of scanlines wrt. real scanout position.
859 int (*get_scanout_position) (struct drm_device *dev, int crtc,
860 int *vpos, int *hpos);
863 * Called by \c drm_get_last_vbltimestamp. Should return a precise
864 * timestamp when the most recent VBLANK interval ended or will end.
866 * Specifically, the timestamp in @vblank_time should correspond as
867 * closely as possible to the time when the first video scanline of
868 * the video frame after the end of VBLANK will start scanning out,
869 * the time immediately after end of the VBLANK interval. If the
870 * @crtc is currently inside VBLANK, this will be a time in the future.
871 * If the @crtc is currently scanning out a frame, this will be the
872 * past start time of the current scanout. This is meant to adhere
873 * to the OpenML OML_sync_control extension specification.
875 * \param dev dev DRM device handle.
876 * \param crtc crtc for which timestamp should be returned.
877 * \param *max_error Maximum allowable timestamp error in nanoseconds.
878 * Implementation should strive to provide timestamp
879 * with an error of at most *max_error nanoseconds.
880 * Returns true upper bound on error for timestamp.
881 * \param *vblank_time Target location for returned vblank timestamp.
882 * \param flags 0 = Defaults, no special treatment needed.
883 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
884 * irq handler. Some drivers need to apply some workarounds
885 * for gpu-specific vblank irq quirks if flag is set.
888 * Zero if timestamping isn't supported in current display mode or a
889 * negative number on failure. A positive status code on success,
890 * which describes how the vblank_time timestamp was computed.
892 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
894 struct timeval *vblank_time,
897 /* these have to be filled in */
899 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
900 void (*irq_preinstall) (struct drm_device *dev);
901 int (*irq_postinstall) (struct drm_device *dev);
902 void (*irq_uninstall) (struct drm_device *dev);
904 /* Master routines */
905 int (*master_create)(struct drm_device *dev, struct drm_master *master);
906 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
908 * master_set is called whenever the minor master is set.
909 * master_drop is called whenever the minor master is dropped.
912 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
914 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
917 int (*debugfs_init)(struct drm_minor *minor);
918 void (*debugfs_cleanup)(struct drm_minor *minor);
921 * Driver-specific constructor for drm_gem_objects, to set up
922 * obj->driver_private.
924 * Returns 0 on success.
926 void (*gem_free_object) (struct drm_gem_object *obj);
927 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
928 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
931 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
932 int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
933 uint32_t handle, uint32_t flags, int *prime_fd);
934 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
935 int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
936 int prime_fd, uint32_t *handle);
937 /* export GEM -> dmabuf */
938 struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
939 struct drm_gem_object *obj, int flags);
940 /* import dmabuf -> GEM */
941 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
942 struct dma_buf *dma_buf);
943 /* low-level interface used by drm_gem_prime_{import,export} */
944 int (*gem_prime_pin)(struct drm_gem_object *obj);
945 void (*gem_prime_unpin)(struct drm_gem_object *obj);
946 struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj);
947 struct drm_gem_object *(*gem_prime_import_sg_table)(
948 struct drm_device *dev, size_t size,
949 struct sg_table *sgt);
950 void *(*gem_prime_vmap)(struct drm_gem_object *obj);
951 void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr);
952 int (*gem_prime_mmap)(struct drm_gem_object *obj,
953 struct vm_area_struct *vma);
955 /* vga arb irq handler */
956 void (*vgaarb_irq)(struct drm_device *dev, bool state);
958 /* dumb alloc support */
959 int (*dumb_create)(struct drm_file *file_priv,
960 struct drm_device *dev,
961 struct drm_mode_create_dumb *args);
962 int (*dumb_map_offset)(struct drm_file *file_priv,
963 struct drm_device *dev, uint32_t handle,
965 int (*dumb_destroy)(struct drm_file *file_priv,
966 struct drm_device *dev,
969 /* Driver private ops for this object */
970 const struct vm_operations_struct *gem_vm_ops;
981 const struct drm_ioctl_desc *ioctls;
983 const struct file_operations *fops;
985 struct pci_driver *pci;
986 struct platform_device *platform_device;
987 struct usb_driver *usb;
991 /* List of devices hanging off this driver */
992 struct list_head device_list;
995 #define DRM_MINOR_UNASSIGNED 0
996 #define DRM_MINOR_LEGACY 1
997 #define DRM_MINOR_CONTROL 2
998 #define DRM_MINOR_RENDER 3
1002 * debugfs node list. This structure represents a debugfs file to
1003 * be created by the drm core
1005 struct drm_debugfs_list {
1006 const char *name; /** file name */
1007 int (*show)(struct seq_file*, void*); /** show callback */
1008 u32 driver_features; /**< Required driver features for this entry */
1012 * debugfs node structure. This structure represents a debugfs file.
1014 struct drm_debugfs_node {
1015 struct list_head list;
1016 struct drm_minor *minor;
1017 struct drm_debugfs_list *debugfs_ent;
1018 struct dentry *dent;
1022 * Info file list entry. This structure represents a debugfs or proc file to
1023 * be created by the drm core
1025 struct drm_info_list {
1026 const char *name; /** file name */
1027 int (*show)(struct seq_file*, void*); /** show callback */
1028 u32 driver_features; /**< Required driver features for this entry */
1033 * debugfs node structure. This structure represents a debugfs file.
1035 struct drm_info_node {
1036 struct list_head list;
1037 struct drm_minor *minor;
1038 const struct drm_info_list *info_ent;
1039 struct dentry *dent;
1043 * DRM minor structure. This structure represents a drm minor number.
1046 int index; /**< Minor device number */
1047 int type; /**< Control or render */
1048 dev_t device; /**< Device number for mknod */
1049 struct device kdev; /**< Linux device */
1050 struct drm_device *dev;
1052 struct dentry *debugfs_root;
1054 struct list_head debugfs_list;
1055 struct mutex debugfs_lock; /* Protects debugfs_list. */
1057 struct drm_master *master; /* currently active master for this node */
1058 struct list_head master_list;
1059 struct drm_mode_group mode_group;
1062 /* mode specified on the command line */
1063 struct drm_cmdline_mode {
1065 bool refresh_specified;
1074 enum drm_connector_force force;
1078 struct drm_pending_vblank_event {
1079 struct drm_pending_event base;
1081 struct drm_event_vblank event;
1084 struct drm_vblank_crtc {
1085 wait_queue_head_t queue; /**< VBLANK wait queue */
1086 struct timeval time[DRM_VBLANKTIME_RBSIZE]; /**< timestamp of current count */
1087 atomic_t count; /**< number of VBLANK interrupts */
1088 atomic_t refcount; /* number of users of vblank interruptsper crtc */
1089 u32 last; /* protected by dev->vbl_lock, used */
1090 /* for wraparound handling */
1091 u32 last_wait; /* Last vblank seqno waited per CRTC */
1092 unsigned int inmodeset; /* Display driver is setting mode */
1093 bool enabled; /* so we don't call enable more than
1098 * DRM device structure. This structure represent a complete card that
1099 * may contain multiple heads.
1102 struct list_head driver_item; /**< list of devices per driver */
1103 char *devname; /**< For /proc/interrupts */
1104 int if_version; /**< Highest interface version set */
1108 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1109 struct mutex struct_mutex; /**< For others */
1112 /** \name Usage Counters */
1114 int open_count; /**< Outstanding files open */
1115 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
1116 atomic_t vma_count; /**< Outstanding vma areas open */
1117 int buf_use; /**< Buffers in use -- cannot alloc */
1118 atomic_t buf_alloc; /**< Buffer allocation in progress */
1121 struct list_head filelist;
1123 /** \name Memory management */
1125 struct list_head maplist; /**< Linked list of regions */
1126 struct drm_open_hash map_hash; /**< User token hash table for maps */
1128 /** \name Context handle management */
1130 struct list_head ctxlist; /**< Linked list of context handles */
1131 struct mutex ctxlist_mutex; /**< For ctxlist */
1135 struct list_head vmalist; /**< List of vmas (for debugging) */
1139 /** \name DMA support */
1141 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1144 /** \name Context support */
1146 bool irq_enabled; /**< True if irq handler is enabled */
1147 __volatile__ long context_flag; /**< Context swapping flag */
1148 int last_context; /**< Last current context */
1151 /** \name VBLANK IRQ support */
1155 * At load time, disabling the vblank interrupt won't be allowed since
1156 * old clients may not call the modeset ioctl and therefore misbehave.
1157 * Once the modeset ioctl *has* been called though, we can safely
1158 * disable them when unused.
1160 bool vblank_disable_allowed;
1162 /* array of size num_crtcs */
1163 struct drm_vblank_crtc *vblank;
1165 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1166 spinlock_t vbl_lock;
1167 struct timer_list vblank_disable_timer;
1169 u32 max_vblank_count; /**< size of vblank counter register */
1174 struct list_head vblank_event_list;
1175 spinlock_t event_lock;
1179 struct drm_agp_head *agp; /**< AGP data */
1181 struct device *dev; /**< Device structure */
1182 struct pci_dev *pdev; /**< PCI device structure */
1184 struct pci_controller *hose;
1187 struct platform_device *platformdev; /**< Platform device struture */
1188 struct usb_device *usbdev;
1190 struct drm_sg_mem *sg; /**< Scatter gather memory */
1191 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1192 void *dev_private; /**< device private data */
1194 struct address_space *dev_mapping;
1195 struct drm_sigdata sigdata; /**< For block_all_signals */
1198 struct drm_driver *driver;
1199 struct drm_local_map *agp_buffer_map;
1200 unsigned int agp_buffer_token;
1201 struct drm_minor *control; /**< Control node for card */
1202 struct drm_minor *primary; /**< render type primary screen head */
1203 struct drm_minor *render; /**< render node for card */
1205 struct drm_mode_config mode_config; /**< Current mode config */
1207 /** \name GEM information */
1209 struct mutex object_name_lock;
1210 struct idr object_name_idr;
1212 int switch_power_state;
1214 atomic_t unplugged; /* device has been unplugged or gone away */
1217 #define DRM_SWITCH_POWER_ON 0
1218 #define DRM_SWITCH_POWER_OFF 1
1219 #define DRM_SWITCH_POWER_CHANGING 2
1220 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3
1222 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1225 return ((dev->driver->driver_features & feature) ? 1 : 0);
1228 static inline int drm_dev_to_irq(struct drm_device *dev)
1230 return dev->driver->bus->get_irq(dev);
1233 static inline void drm_device_set_unplugged(struct drm_device *dev)
1236 atomic_set(&dev->unplugged, 1);
1239 static inline int drm_device_is_unplugged(struct drm_device *dev)
1241 int ret = atomic_read(&dev->unplugged);
1246 static inline bool drm_modeset_is_locked(struct drm_device *dev)
1248 return mutex_is_locked(&dev->mode_config.mutex);
1251 static inline bool drm_is_render_client(struct drm_file *file_priv)
1253 return file_priv->minor->type == DRM_MINOR_RENDER;
1256 /******************************************************************/
1257 /** \name Internal function definitions */
1260 /* Driver support (drm_drv.h) */
1261 extern long drm_ioctl(struct file *filp,
1262 unsigned int cmd, unsigned long arg);
1263 extern long drm_compat_ioctl(struct file *filp,
1264 unsigned int cmd, unsigned long arg);
1265 extern int drm_lastclose(struct drm_device *dev);
1267 /* Device support (drm_fops.h) */
1268 extern struct mutex drm_global_mutex;
1269 extern int drm_open(struct inode *inode, struct file *filp);
1270 extern int drm_stub_open(struct inode *inode, struct file *filp);
1271 extern ssize_t drm_read(struct file *filp, char __user *buffer,
1272 size_t count, loff_t *offset);
1273 extern int drm_release(struct inode *inode, struct file *filp);
1275 /* Mapping support (drm_vm.h) */
1276 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1277 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1278 extern void drm_vm_open_locked(struct drm_device *dev, struct vm_area_struct *vma);
1279 extern void drm_vm_close_locked(struct drm_device *dev, struct vm_area_struct *vma);
1280 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1282 /* Memory management support (drm_memory.h) */
1283 #include <drm/drm_memory.h>
1285 /* Misc. IOCTL support (drm_ioctl.h) */
1286 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1287 struct drm_file *file_priv);
1288 extern int drm_getunique(struct drm_device *dev, void *data,
1289 struct drm_file *file_priv);
1290 extern int drm_setunique(struct drm_device *dev, void *data,
1291 struct drm_file *file_priv);
1292 extern int drm_getmap(struct drm_device *dev, void *data,
1293 struct drm_file *file_priv);
1294 extern int drm_getclient(struct drm_device *dev, void *data,
1295 struct drm_file *file_priv);
1296 extern int drm_getstats(struct drm_device *dev, void *data,
1297 struct drm_file *file_priv);
1298 extern int drm_getcap(struct drm_device *dev, void *data,
1299 struct drm_file *file_priv);
1300 extern int drm_setclientcap(struct drm_device *dev, void *data,
1301 struct drm_file *file_priv);
1302 extern int drm_setversion(struct drm_device *dev, void *data,
1303 struct drm_file *file_priv);
1304 extern int drm_noop(struct drm_device *dev, void *data,
1305 struct drm_file *file_priv);
1307 /* Context IOCTL support (drm_context.h) */
1308 extern int drm_resctx(struct drm_device *dev, void *data,
1309 struct drm_file *file_priv);
1310 extern int drm_addctx(struct drm_device *dev, void *data,
1311 struct drm_file *file_priv);
1312 extern int drm_getctx(struct drm_device *dev, void *data,
1313 struct drm_file *file_priv);
1314 extern int drm_switchctx(struct drm_device *dev, void *data,
1315 struct drm_file *file_priv);
1316 extern int drm_newctx(struct drm_device *dev, void *data,
1317 struct drm_file *file_priv);
1318 extern int drm_rmctx(struct drm_device *dev, void *data,
1319 struct drm_file *file_priv);
1321 extern int drm_ctxbitmap_init(struct drm_device *dev);
1322 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1323 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1325 extern int drm_setsareactx(struct drm_device *dev, void *data,
1326 struct drm_file *file_priv);
1327 extern int drm_getsareactx(struct drm_device *dev, void *data,
1328 struct drm_file *file_priv);
1330 /* Authentication IOCTL support (drm_auth.h) */
1331 extern int drm_getmagic(struct drm_device *dev, void *data,
1332 struct drm_file *file_priv);
1333 extern int drm_authmagic(struct drm_device *dev, void *data,
1334 struct drm_file *file_priv);
1335 extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic);
1337 /* Cache management (drm_cache.c) */
1338 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1339 void drm_clflush_sg(struct sg_table *st);
1340 void drm_clflush_virt_range(char *addr, unsigned long length);
1342 /* Locking IOCTL support (drm_lock.h) */
1343 extern int drm_lock(struct drm_device *dev, void *data,
1344 struct drm_file *file_priv);
1345 extern int drm_unlock(struct drm_device *dev, void *data,
1346 struct drm_file *file_priv);
1347 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1348 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1349 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1352 * These are exported to drivers so that they can implement fencing using
1353 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1356 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1358 /* Buffer management support (drm_bufs.h) */
1359 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1360 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1361 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1362 unsigned int size, enum drm_map_type type,
1363 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1364 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1365 struct drm_file *file_priv);
1366 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1367 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1368 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1369 struct drm_file *file_priv);
1370 extern int drm_addbufs(struct drm_device *dev, void *data,
1371 struct drm_file *file_priv);
1372 extern int drm_infobufs(struct drm_device *dev, void *data,
1373 struct drm_file *file_priv);
1374 extern int drm_markbufs(struct drm_device *dev, void *data,
1375 struct drm_file *file_priv);
1376 extern int drm_freebufs(struct drm_device *dev, void *data,
1377 struct drm_file *file_priv);
1378 extern int drm_mapbufs(struct drm_device *dev, void *data,
1379 struct drm_file *file_priv);
1380 extern int drm_dma_ioctl(struct drm_device *dev, void *data,
1381 struct drm_file *file_priv);
1383 /* DMA support (drm_dma.h) */
1384 extern int drm_legacy_dma_setup(struct drm_device *dev);
1385 extern void drm_legacy_dma_takedown(struct drm_device *dev);
1386 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1387 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1388 struct drm_file *filp);
1390 /* IRQ support (drm_irq.h) */
1391 extern int drm_control(struct drm_device *dev, void *data,
1392 struct drm_file *file_priv);
1393 extern int drm_irq_install(struct drm_device *dev);
1394 extern int drm_irq_uninstall(struct drm_device *dev);
1396 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1397 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1398 struct drm_file *filp);
1399 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1400 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1401 struct timeval *vblanktime);
1402 extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
1403 struct drm_pending_vblank_event *e);
1404 extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1405 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1406 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1407 extern void drm_vblank_off(struct drm_device *dev, int crtc);
1408 extern void drm_vblank_cleanup(struct drm_device *dev);
1409 extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1410 struct timeval *tvblank, unsigned flags);
1411 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1412 int crtc, int *max_error,
1413 struct timeval *vblank_time,
1415 struct drm_crtc *refcrtc);
1416 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
1419 drm_mode_parse_command_line_for_connector(const char *mode_option,
1420 struct drm_connector *connector,
1421 struct drm_cmdline_mode *mode);
1423 extern struct drm_display_mode *
1424 drm_mode_create_from_cmdline_mode(struct drm_device *dev,
1425 struct drm_cmdline_mode *cmd);
1427 extern int drm_display_mode_from_videomode(const struct videomode *vm,
1428 struct drm_display_mode *dmode);
1429 extern int of_get_drm_display_mode(struct device_node *np,
1430 struct drm_display_mode *dmode,
1433 /* Modesetting support */
1434 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1435 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1436 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1437 struct drm_file *file_priv);
1439 /* AGP/GART support (drm_agpsupport.h) */
1441 #include <drm/drm_agpsupport.h>
1443 /* Stub support (drm_stub.h) */
1444 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1445 struct drm_file *file_priv);
1446 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1447 struct drm_file *file_priv);
1448 struct drm_master *drm_master_create(struct drm_minor *minor);
1449 extern struct drm_master *drm_master_get(struct drm_master *master);
1450 extern void drm_master_put(struct drm_master **master);
1452 extern void drm_put_dev(struct drm_device *dev);
1453 extern int drm_put_minor(struct drm_minor **minor);
1454 extern void drm_unplug_dev(struct drm_device *dev);
1455 extern unsigned int drm_debug;
1456 extern unsigned int drm_rnodes;
1458 extern unsigned int drm_vblank_offdelay;
1459 extern unsigned int drm_timestamp_precision;
1460 extern unsigned int drm_timestamp_monotonic;
1462 extern struct class *drm_class;
1463 extern struct dentry *drm_debugfs_root;
1465 extern struct idr drm_minors_idr;
1467 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1469 /* Debugfs support */
1470 #if defined(CONFIG_DEBUG_FS)
1471 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1472 struct dentry *root);
1473 extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1474 struct dentry *root, struct drm_minor *minor);
1475 extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1476 struct drm_minor *minor);
1477 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1480 /* Info file support */
1481 extern int drm_name_info(struct seq_file *m, void *data);
1482 extern int drm_vm_info(struct seq_file *m, void *data);
1483 extern int drm_bufs_info(struct seq_file *m, void *data);
1484 extern int drm_vblank_info(struct seq_file *m, void *data);
1485 extern int drm_clients_info(struct seq_file *m, void* data);
1486 extern int drm_gem_name_info(struct seq_file *m, void *data);
1489 extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
1490 struct drm_gem_object *obj, int flags);
1491 extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
1492 struct drm_file *file_priv, uint32_t handle, uint32_t flags,
1494 extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
1495 struct dma_buf *dma_buf);
1496 extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
1497 struct drm_file *file_priv, int prime_fd, uint32_t *handle);
1498 extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
1500 extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
1501 struct drm_file *file_priv);
1502 extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data,
1503 struct drm_file *file_priv);
1505 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
1506 dma_addr_t *addrs, int max_pages);
1507 extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages);
1508 extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
1510 int drm_gem_dumb_destroy(struct drm_file *file,
1511 struct drm_device *dev,
1514 void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv);
1515 void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv);
1516 void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf);
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 int drm_gem_object_init(struct drm_device *dev,
1556 struct drm_gem_object *obj, size_t size);
1557 void drm_gem_private_object_init(struct drm_device *dev,
1558 struct drm_gem_object *obj, size_t size);
1559 void drm_gem_vm_open(struct vm_area_struct *vma);
1560 void drm_gem_vm_close(struct vm_area_struct *vma);
1561 int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,
1562 struct vm_area_struct *vma);
1563 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1565 #include <drm/drm_global.h>
1568 drm_gem_object_reference(struct drm_gem_object *obj)
1570 kref_get(&obj->refcount);
1574 drm_gem_object_unreference(struct drm_gem_object *obj)
1577 kref_put(&obj->refcount, drm_gem_object_free);
1581 drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1583 if (obj && !atomic_add_unless(&obj->refcount.refcount, -1, 1)) {
1584 struct drm_device *dev = obj->dev;
1586 mutex_lock(&dev->struct_mutex);
1587 if (likely(atomic_dec_and_test(&obj->refcount.refcount)))
1588 drm_gem_object_free(&obj->refcount);
1589 mutex_unlock(&dev->struct_mutex);
1593 int drm_gem_handle_create_tail(struct drm_file *file_priv,
1594 struct drm_gem_object *obj,
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 void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
1603 int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
1604 int drm_gem_create_mmap_offset_size(struct drm_gem_object *obj, size_t size);
1606 struct page **drm_gem_get_pages(struct drm_gem_object *obj, gfp_t gfpmask);
1607 void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages,
1608 bool dirty, bool accessed);
1610 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1611 struct drm_file *filp,
1613 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1614 struct drm_file *file_priv);
1615 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1616 struct drm_file *file_priv);
1617 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1618 struct drm_file *file_priv);
1619 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1620 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1622 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1623 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1624 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1626 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1629 struct drm_map_list *_entry;
1630 list_for_each_entry(_entry, &dev->maplist, head)
1631 if (_entry->user_token == token)
1636 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1640 #include <drm/drm_mem_util.h>
1642 struct drm_device *drm_dev_alloc(struct drm_driver *driver,
1643 struct device *parent);
1644 void drm_dev_free(struct drm_device *dev);
1645 int drm_dev_register(struct drm_device *dev, unsigned long flags);
1646 void drm_dev_unregister(struct drm_device *dev);
1647 int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
1651 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1653 if (dev->driver->device_is_agp != NULL) {
1654 int err = (*dev->driver->device_is_agp) (dev);
1661 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1664 extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1665 extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1666 extern int drm_get_pci_dev(struct pci_dev *pdev,
1667 const struct pci_device_id *ent,
1668 struct drm_driver *driver);
1670 #define DRM_PCIE_SPEED_25 1
1671 #define DRM_PCIE_SPEED_50 2
1672 #define DRM_PCIE_SPEED_80 4
1674 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
1676 /* platform section */
1677 extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1678 extern void drm_platform_exit(struct drm_driver *driver, struct platform_device *platform_device);
1680 /* returns true if currently okay to sleep */
1681 static __inline__ bool drm_can_sleep(void)
1683 if (in_atomic() || in_dbg_master() || irqs_disabled())
1688 #endif /* __KERNEL__ */