3 * Private header for Direct Rendering Manager
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
10 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
11 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
12 * Copyright (c) 2009-2010, Code Aurora Forum.
13 * All rights reserved.
15 * Permission is hereby granted, free of charge, to any person obtaining a
16 * copy of this software and associated documentation files (the "Software"),
17 * to deal in the Software without restriction, including without limitation
18 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
19 * and/or sell copies of the Software, and to permit persons to whom the
20 * Software is furnished to do so, subject to the following conditions:
22 * The above copyright notice and this permission notice (including the next
23 * paragraph) shall be included in all copies or substantial portions of the
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
29 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
30 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
31 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
32 * OTHER DEALINGS IN THE SOFTWARE.
40 /* add include of current.h so that "current" is defined
41 * before static inline funcs in wait.h. Doing this so we
42 * can build the DRM (part of PI DRI). 4/21/2000 S + B */
43 #include <asm/current.h>
44 #endif /* __alpha__ */
45 #include <linux/kernel.h>
46 #include <linux/miscdevice.h>
48 #include <linux/proc_fs.h>
49 #include <linux/init.h>
50 #include <linux/file.h>
51 #include <linux/platform_device.h>
52 #include <linux/pci.h>
53 #include <linux/jiffies.h>
54 #include <linux/dma-mapping.h>
56 #include <linux/cdev.h>
57 #include <linux/mutex.h>
58 #include <linux/slab.h>
59 #if defined(__alpha__) || defined(__powerpc__)
60 #include <asm/pgtable.h> /* For pte_wrprotect */
64 #include <asm/uaccess.h>
68 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
69 #include <linux/types.h>
70 #include <linux/agp_backend.h>
72 #include <linux/workqueue.h>
73 #include <linux/poll.h>
74 #include <asm/pgalloc.h>
76 #include <drm/drm_sarea.h>
78 #include <linux/idr.h>
80 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
81 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
88 #include <drm/drm_os_linux.h>
89 #include <drm/drm_hashtab.h>
90 #include <drm/drm_mm.h>
92 #define DRM_UT_CORE 0x01
93 #define DRM_UT_DRIVER 0x02
94 #define DRM_UT_KMS 0x04
95 #define DRM_UT_PRIME 0x08
97 * Three debug levels are defined.
98 * drm_core, drm_driver, drm_kms
99 * drm_core level can be used in the generic drm code. For example:
100 * drm_ioctl, drm_mm, drm_memory
101 * The macro definition of DRM_DEBUG is used.
102 * DRM_DEBUG(fmt, args...)
103 * The debug info by using the DRM_DEBUG can be obtained by adding
104 * the boot option of "drm.debug=1".
106 * drm_driver level can be used in the specific drm driver. It is used
107 * to add the debug info related with the drm driver. For example:
108 * i915_drv, i915_dma, i915_gem, radeon_drv,
109 * The macro definition of DRM_DEBUG_DRIVER can be used.
110 * DRM_DEBUG_DRIVER(fmt, args...)
111 * The debug info by using the DRM_DEBUG_DRIVER can be obtained by
112 * adding the boot option of "drm.debug=0x02"
114 * drm_kms level can be used in the KMS code related with specific drm driver.
115 * It is used to add the debug info related with KMS mode. For example:
116 * the connector/crtc ,
117 * The macro definition of DRM_DEBUG_KMS can be used.
118 * DRM_DEBUG_KMS(fmt, args...)
119 * The debug info by using the DRM_DEBUG_KMS can be obtained by
120 * adding the boot option of "drm.debug=0x04"
122 * If we add the boot option of "drm.debug=0x06", we can get the debug info by
123 * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
124 * If we add the boot option of "drm.debug=0x05", we can get the debug info by
125 * using the DRM_DEBUG_KMS and DRM_DEBUG.
128 extern __printf(4, 5)
129 void drm_ut_debug_printk(unsigned int request_level,
131 const char *function_name,
132 const char *format, ...);
133 extern __printf(2, 3)
134 int drm_err(const char *func, const char *format, ...);
136 /***********************************************************************/
137 /** \name DRM template customization defaults */
140 /* driver capabilities and requirements mask */
141 #define DRIVER_USE_AGP 0x1
142 #define DRIVER_REQUIRE_AGP 0x2
143 #define DRIVER_USE_MTRR 0x4
144 #define DRIVER_PCI_DMA 0x8
145 #define DRIVER_SG 0x10
146 #define DRIVER_HAVE_DMA 0x20
147 #define DRIVER_HAVE_IRQ 0x40
148 #define DRIVER_IRQ_SHARED 0x80
149 #define DRIVER_IRQ_VBL 0x100
150 #define DRIVER_DMA_QUEUE 0x200
151 #define DRIVER_FB_DMA 0x400
152 #define DRIVER_IRQ_VBL2 0x800
153 #define DRIVER_GEM 0x1000
154 #define DRIVER_MODESET 0x2000
155 #define DRIVER_PRIME 0x4000
157 #define DRIVER_BUS_PCI 0x1
158 #define DRIVER_BUS_PLATFORM 0x2
159 #define DRIVER_BUS_USB 0x3
161 /***********************************************************************/
162 /** \name Begin the DRM... */
165 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
166 also include looping detection. */
168 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
169 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
170 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
171 #define DRM_LOOPING_LIMIT 5000000
172 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
173 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
175 #define DRM_FLAG_DEBUG 0x01
177 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
178 #define DRM_MAP_HASH_OFFSET 0x10000000
182 /***********************************************************************/
183 /** \name Macros to make printk easier */
189 * \param fmt printf() like format string.
190 * \param arg arguments
192 #define DRM_ERROR(fmt, ...) \
193 drm_err(__func__, fmt, ##__VA_ARGS__)
195 #define DRM_INFO(fmt, ...) \
196 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
201 * \param fmt printf() like format string.
202 * \param arg arguments
205 #define DRM_DEBUG(fmt, args...) \
207 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
208 __func__, fmt, ##args); \
211 #define DRM_DEBUG_DRIVER(fmt, args...) \
213 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
214 __func__, fmt, ##args); \
216 #define DRM_DEBUG_KMS(fmt, args...) \
218 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
219 __func__, fmt, ##args); \
221 #define DRM_DEBUG_PRIME(fmt, args...) \
223 drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME, \
224 __func__, fmt, ##args); \
226 #define DRM_LOG(fmt, args...) \
228 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
229 NULL, fmt, ##args); \
231 #define DRM_LOG_KMS(fmt, args...) \
233 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
234 NULL, fmt, ##args); \
236 #define DRM_LOG_MODE(fmt, args...) \
238 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
239 NULL, fmt, ##args); \
241 #define DRM_LOG_DRIVER(fmt, args...) \
243 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
244 NULL, fmt, ##args); \
247 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
248 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
249 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
250 #define DRM_DEBUG(fmt, arg...) do { } while (0)
251 #define DRM_LOG(fmt, arg...) do { } while (0)
252 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
253 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
254 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
260 /***********************************************************************/
261 /** \name Internal types and structures */
264 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
266 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
267 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
269 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
272 * Test that the hardware lock is held by the caller, returning otherwise.
274 * \param dev DRM device.
275 * \param filp file pointer of the caller.
277 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
279 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
280 _file_priv->master->lock.file_priv != _file_priv) { \
281 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
282 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
283 _file_priv->master->lock.file_priv, _file_priv); \
289 * Ioctl function type.
291 * \param inode device inode.
292 * \param file_priv DRM file private pointer.
293 * \param cmd command.
294 * \param arg argument.
296 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
297 struct drm_file *file_priv);
299 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
302 #define DRM_IOCTL_NR(n) _IOC_NR(n)
303 #define DRM_MAJOR 226
306 #define DRM_MASTER 0x2
307 #define DRM_ROOT_ONLY 0x4
308 #define DRM_CONTROL_ALLOW 0x8
309 #define DRM_UNLOCKED 0x10
311 struct drm_ioctl_desc {
315 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}
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;
589 struct drm_mm_node *file_offset_node; /**< fake offset */
593 * Context handle list
595 struct drm_ctx_list {
596 struct list_head head; /**< list head */
597 drm_context_t handle; /**< context handle */
598 struct drm_file *tag; /**< associated fd private data */
601 /* location of GART table */
602 #define DRM_ATI_GART_MAIN 1
603 #define DRM_ATI_GART_FB 2
605 #define DRM_ATI_GART_PCI 1
606 #define DRM_ATI_GART_PCIE 2
607 #define DRM_ATI_GART_IGP 3
609 struct drm_ati_pcigart_info {
610 int gart_table_location;
614 dma_addr_t table_mask;
615 struct drm_dma_handle *table_handle;
616 struct drm_local_map mapping;
621 * GEM specific mm private for tracking GEM objects
624 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */
625 struct drm_open_hash offset_hash; /**< User token hash table for maps */
629 * This structure defines the drm_mm memory object, which will be used by the
630 * DRM for its buffer objects.
632 struct drm_gem_object {
633 /** Reference count of this object */
634 struct kref refcount;
636 /** Handle count of this object. Each handle also holds a reference */
637 atomic_t handle_count; /* number of handles on this object */
639 /** Related drm device */
640 struct drm_device *dev;
642 /** File representing the shmem storage */
645 /* Mapping info for this object */
646 struct drm_map_list map_list;
649 * Size of the object, in bytes. Immutable over the object's
655 * Global name for this object, starts at 1. 0 means unnamed.
656 * Access is covered by the object_name_lock in the related drm_device
661 * Memory domains. These monitor which caches contain read/write data
662 * related to the object. When transitioning from one set of domains
663 * to another, the driver is called to ensure that caches are suitably
664 * flushed and invalidated
666 uint32_t read_domains;
667 uint32_t write_domain;
670 * While validating an exec operation, the
671 * new read/write domain values are computed here.
672 * They will be transferred to the above values
673 * at the point that any cache flushing occurs
675 uint32_t pending_read_domains;
676 uint32_t pending_write_domain;
678 void *driver_private;
680 /* dma buf exported from this GEM object */
681 struct dma_buf *export_dma_buf;
683 /* dma buf attachment backing this object */
684 struct dma_buf_attachment *import_attach;
687 #include <drm/drm_crtc.h>
689 /* per-master structure */
692 struct kref refcount; /* refcount for this master */
694 struct list_head head; /**< each minor contains a list of masters */
695 struct drm_minor *minor; /**< link back to minor we are a master for */
697 char *unique; /**< Unique identifier: e.g., busid */
698 int unique_len; /**< Length of unique field */
699 int unique_size; /**< amount allocated */
701 int blocked; /**< Blocked due to VC switch? */
703 /** \name Authentication */
705 struct drm_open_hash magiclist;
706 struct list_head magicfree;
709 struct drm_lock_data lock; /**< Information on hardware lock */
711 void *driver_priv; /**< Private structure for driver to use */
714 /* Size of ringbuffer for vblank timestamps. Just double-buffer
715 * in initial implementation.
717 #define DRM_VBLANKTIME_RBSIZE 2
719 /* Flags and return codes for get_vblank_timestamp() driver function. */
720 #define DRM_CALLED_FROM_VBLIRQ 1
721 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
722 #define DRM_VBLANKTIME_INVBL (1 << 1)
724 /* get_scanout_position() return flags */
725 #define DRM_SCANOUTPOS_VALID (1 << 0)
726 #define DRM_SCANOUTPOS_INVBL (1 << 1)
727 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
731 int (*get_irq)(struct drm_device *dev);
732 const char *(*get_name)(struct drm_device *dev);
733 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
734 int (*set_unique)(struct drm_device *dev, struct drm_master *master,
735 struct drm_unique *unique);
736 int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
737 /* hooks that are for PCI */
738 int (*agp_init)(struct drm_device *dev);
743 * DRM driver structure. This structure represent the common code for
744 * a family of cards. There will one drm_device for each card present
748 int (*load) (struct drm_device *, unsigned long flags);
749 int (*firstopen) (struct drm_device *);
750 int (*open) (struct drm_device *, struct drm_file *);
751 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
752 void (*postclose) (struct drm_device *, struct drm_file *);
753 void (*lastclose) (struct drm_device *);
754 int (*unload) (struct drm_device *);
755 int (*suspend) (struct drm_device *, pm_message_t state);
756 int (*resume) (struct drm_device *);
757 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
758 int (*dma_quiescent) (struct drm_device *);
759 int (*context_dtor) (struct drm_device *dev, int context);
762 * get_vblank_counter - get raw hardware vblank counter
764 * @crtc: counter to fetch
766 * Driver callback for fetching a raw hardware vblank counter for @crtc.
767 * If a device doesn't have a hardware counter, the driver can simply
768 * return the value of drm_vblank_count. The DRM core will account for
769 * missed vblank events while interrupts where disabled based on system
772 * Wraparound handling and loss of events due to modesetting is dealt
773 * with in the DRM core code.
776 * Raw vblank counter value.
778 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
781 * enable_vblank - enable vblank interrupt events
783 * @crtc: which irq to enable
785 * Enable vblank interrupts for @crtc. If the device doesn't have
786 * a hardware vblank counter, this routine should be a no-op, since
787 * interrupts will have to stay on to keep the count accurate.
790 * Zero on success, appropriate errno if the given @crtc's vblank
791 * interrupt cannot be enabled.
793 int (*enable_vblank) (struct drm_device *dev, int crtc);
796 * disable_vblank - disable vblank interrupt events
798 * @crtc: which irq to enable
800 * Disable vblank interrupts for @crtc. If the device doesn't have
801 * a hardware vblank counter, this routine should be a no-op, since
802 * interrupts will have to stay on to keep the count accurate.
804 void (*disable_vblank) (struct drm_device *dev, int crtc);
807 * Called by \c drm_device_is_agp. Typically used to determine if a
808 * card is really attached to AGP or not.
810 * \param dev DRM device handle
813 * One of three values is returned depending on whether or not the
814 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
815 * (return of 1), or may or may not be AGP (return of 2).
817 int (*device_is_agp) (struct drm_device *dev);
820 * Called by vblank timestamping code.
822 * Return the current display scanout position from a crtc.
824 * \param dev DRM device.
825 * \param crtc Id of the crtc to query.
826 * \param *vpos Target location for current vertical scanout position.
827 * \param *hpos Target location for current horizontal scanout position.
829 * Returns vpos as a positive number while in active scanout area.
830 * Returns vpos as a negative number inside vblank, counting the number
831 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
832 * until start of active scanout / end of vblank."
834 * \return Flags, or'ed together as follows:
836 * DRM_SCANOUTPOS_VALID = Query successful.
837 * DRM_SCANOUTPOS_INVBL = Inside vblank.
838 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
839 * this flag means that returned position may be offset by a constant
840 * but unknown small number of scanlines wrt. real scanout position.
843 int (*get_scanout_position) (struct drm_device *dev, int crtc,
844 int *vpos, int *hpos);
847 * Called by \c drm_get_last_vbltimestamp. Should return a precise
848 * timestamp when the most recent VBLANK interval ended or will end.
850 * Specifically, the timestamp in @vblank_time should correspond as
851 * closely as possible to the time when the first video scanline of
852 * the video frame after the end of VBLANK will start scanning out,
853 * the time immediately after end of the VBLANK interval. If the
854 * @crtc is currently inside VBLANK, this will be a time in the future.
855 * If the @crtc is currently scanning out a frame, this will be the
856 * past start time of the current scanout. This is meant to adhere
857 * to the OpenML OML_sync_control extension specification.
859 * \param dev dev DRM device handle.
860 * \param crtc crtc for which timestamp should be returned.
861 * \param *max_error Maximum allowable timestamp error in nanoseconds.
862 * Implementation should strive to provide timestamp
863 * with an error of at most *max_error nanoseconds.
864 * Returns true upper bound on error for timestamp.
865 * \param *vblank_time Target location for returned vblank timestamp.
866 * \param flags 0 = Defaults, no special treatment needed.
867 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
868 * irq handler. Some drivers need to apply some workarounds
869 * for gpu-specific vblank irq quirks if flag is set.
872 * Zero if timestamping isn't supported in current display mode or a
873 * negative number on failure. A positive status code on success,
874 * which describes how the vblank_time timestamp was computed.
876 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
878 struct timeval *vblank_time,
881 /* these have to be filled in */
883 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
884 void (*irq_preinstall) (struct drm_device *dev);
885 int (*irq_postinstall) (struct drm_device *dev);
886 void (*irq_uninstall) (struct drm_device *dev);
887 void (*set_version) (struct drm_device *dev,
888 struct drm_set_version *sv);
890 /* Master routines */
891 int (*master_create)(struct drm_device *dev, struct drm_master *master);
892 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
894 * master_set is called whenever the minor master is set.
895 * master_drop is called whenever the minor master is dropped.
898 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
900 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
903 int (*debugfs_init)(struct drm_minor *minor);
904 void (*debugfs_cleanup)(struct drm_minor *minor);
907 * Driver-specific constructor for drm_gem_objects, to set up
908 * obj->driver_private.
910 * Returns 0 on success.
912 int (*gem_init_object) (struct drm_gem_object *obj);
913 void (*gem_free_object) (struct drm_gem_object *obj);
914 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
915 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
918 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
919 int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
920 uint32_t handle, uint32_t flags, int *prime_fd);
921 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
922 int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
923 int prime_fd, uint32_t *handle);
924 /* export GEM -> dmabuf */
925 struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
926 struct drm_gem_object *obj, int flags);
927 /* import dmabuf -> GEM */
928 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
929 struct dma_buf *dma_buf);
931 /* vga arb irq handler */
932 void (*vgaarb_irq)(struct drm_device *dev, bool state);
934 /* dumb alloc support */
935 int (*dumb_create)(struct drm_file *file_priv,
936 struct drm_device *dev,
937 struct drm_mode_create_dumb *args);
938 int (*dumb_map_offset)(struct drm_file *file_priv,
939 struct drm_device *dev, uint32_t handle,
941 int (*dumb_destroy)(struct drm_file *file_priv,
942 struct drm_device *dev,
945 /* Driver private ops for this object */
946 const struct vm_operations_struct *gem_vm_ops;
957 struct drm_ioctl_desc *ioctls;
959 const struct file_operations *fops;
961 struct pci_driver *pci;
962 struct platform_device *platform_device;
963 struct usb_driver *usb;
967 /* List of devices hanging off this driver */
968 struct list_head device_list;
971 #define DRM_MINOR_UNASSIGNED 0
972 #define DRM_MINOR_LEGACY 1
973 #define DRM_MINOR_CONTROL 2
974 #define DRM_MINOR_RENDER 3
978 * debugfs node list. This structure represents a debugfs file to
979 * be created by the drm core
981 struct drm_debugfs_list {
982 const char *name; /** file name */
983 int (*show)(struct seq_file*, void*); /** show callback */
984 u32 driver_features; /**< Required driver features for this entry */
988 * debugfs node structure. This structure represents a debugfs file.
990 struct drm_debugfs_node {
991 struct list_head list;
992 struct drm_minor *minor;
993 struct drm_debugfs_list *debugfs_ent;
998 * Info file list entry. This structure represents a debugfs or proc file to
999 * be created by the drm core
1001 struct drm_info_list {
1002 const char *name; /** file name */
1003 int (*show)(struct seq_file*, void*); /** show callback */
1004 u32 driver_features; /**< Required driver features for this entry */
1009 * debugfs node structure. This structure represents a debugfs file.
1011 struct drm_info_node {
1012 struct list_head list;
1013 struct drm_minor *minor;
1014 struct drm_info_list *info_ent;
1015 struct dentry *dent;
1019 * DRM minor structure. This structure represents a drm minor number.
1022 int index; /**< Minor device number */
1023 int type; /**< Control or render */
1024 dev_t device; /**< Device number for mknod */
1025 struct device kdev; /**< Linux device */
1026 struct drm_device *dev;
1028 struct proc_dir_entry *proc_root; /**< proc directory entry */
1029 struct drm_info_node proc_nodes;
1030 struct dentry *debugfs_root;
1032 struct list_head debugfs_list;
1033 struct mutex debugfs_lock; /* Protects debugfs_list. */
1035 struct drm_master *master; /* currently active master for this node */
1036 struct list_head master_list;
1037 struct drm_mode_group mode_group;
1040 /* mode specified on the command line */
1041 struct drm_cmdline_mode {
1043 bool refresh_specified;
1052 enum drm_connector_force force;
1056 struct drm_pending_vblank_event {
1057 struct drm_pending_event base;
1059 struct drm_event_vblank event;
1063 * DRM device structure. This structure represent a complete card that
1064 * may contain multiple heads.
1067 struct list_head driver_item; /**< list of devices per driver */
1068 char *devname; /**< For /proc/interrupts */
1069 int if_version; /**< Highest interface version set */
1073 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1074 struct mutex struct_mutex; /**< For others */
1077 /** \name Usage Counters */
1079 int open_count; /**< Outstanding files open */
1080 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
1081 atomic_t vma_count; /**< Outstanding vma areas open */
1082 int buf_use; /**< Buffers in use -- cannot alloc */
1083 atomic_t buf_alloc; /**< Buffer allocation in progress */
1086 /** \name Performance counters */
1088 unsigned long counters;
1089 enum drm_stat_type types[15];
1090 atomic_t counts[15];
1093 struct list_head filelist;
1095 /** \name Memory management */
1097 struct list_head maplist; /**< Linked list of regions */
1098 int map_count; /**< Number of mappable regions */
1099 struct drm_open_hash map_hash; /**< User token hash table for maps */
1101 /** \name Context handle management */
1103 struct list_head ctxlist; /**< Linked list of context handles */
1104 int ctx_count; /**< Number of context handles */
1105 struct mutex ctxlist_mutex; /**< For ctxlist */
1109 struct list_head vmalist; /**< List of vmas (for debugging) */
1113 /** \name DMA support */
1115 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1118 /** \name Context support */
1120 int irq_enabled; /**< True if irq handler is enabled */
1121 __volatile__ long context_flag; /**< Context swapping flag */
1122 __volatile__ long interrupt_flag; /**< Interruption handler flag */
1123 __volatile__ long dma_flag; /**< DMA dispatch flag */
1124 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
1125 int last_checked; /**< Last context checked for DMA */
1126 int last_context; /**< Last current context */
1127 unsigned long last_switch; /**< jiffies at last context switch */
1130 struct work_struct work;
1131 /** \name VBLANK IRQ support */
1135 * At load time, disabling the vblank interrupt won't be allowed since
1136 * old clients may not call the modeset ioctl and therefore misbehave.
1137 * Once the modeset ioctl *has* been called though, we can safely
1138 * disable them when unused.
1140 int vblank_disable_allowed;
1142 wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */
1143 atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1144 struct timeval *_vblank_time; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1145 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1146 spinlock_t vbl_lock;
1147 atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */
1148 u32 *last_vblank; /* protected by dev->vbl_lock, used */
1149 /* for wraparound handling */
1150 int *vblank_enabled; /* so we don't call enable more than
1152 int *vblank_inmodeset; /* Display driver is setting mode */
1153 u32 *last_vblank_wait; /* Last vblank seqno waited per CRTC */
1154 struct timer_list vblank_disable_timer;
1156 u32 max_vblank_count; /**< size of vblank counter register */
1161 struct list_head vblank_event_list;
1162 spinlock_t event_lock;
1168 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
1169 wait_queue_head_t buf_readers; /**< Processes waiting to read */
1170 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
1172 struct drm_agp_head *agp; /**< AGP data */
1174 struct device *dev; /**< Device structure */
1175 struct pci_dev *pdev; /**< PCI device structure */
1176 int pci_vendor; /**< PCI vendor id */
1177 int pci_device; /**< PCI device id */
1179 struct pci_controller *hose;
1182 struct platform_device *platformdev; /**< Platform device struture */
1183 struct usb_device *usbdev;
1185 struct drm_sg_mem *sg; /**< Scatter gather memory */
1186 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1187 void *dev_private; /**< device private data */
1189 struct address_space *dev_mapping;
1190 struct drm_sigdata sigdata; /**< For block_all_signals */
1193 struct drm_driver *driver;
1194 struct drm_local_map *agp_buffer_map;
1195 unsigned int agp_buffer_token;
1196 struct drm_minor *control; /**< Control node for card */
1197 struct drm_minor *primary; /**< render type primary screen head */
1199 struct drm_mode_config mode_config; /**< Current mode config */
1201 /** \name GEM information */
1203 spinlock_t object_name_lock;
1204 struct idr object_name_idr;
1206 int switch_power_state;
1208 atomic_t unplugged; /* device has been unplugged or gone away */
1211 #define DRM_SWITCH_POWER_ON 0
1212 #define DRM_SWITCH_POWER_OFF 1
1213 #define DRM_SWITCH_POWER_CHANGING 2
1215 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1218 return ((dev->driver->driver_features & feature) ? 1 : 0);
1221 static inline int drm_dev_to_irq(struct drm_device *dev)
1223 return dev->driver->bus->get_irq(dev);
1228 static inline int drm_core_has_AGP(struct drm_device *dev)
1230 return drm_core_check_feature(dev, DRIVER_USE_AGP);
1233 #define drm_core_has_AGP(dev) (0)
1237 static inline int drm_core_has_MTRR(struct drm_device *dev)
1239 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1242 #define DRM_MTRR_WC MTRR_TYPE_WRCOMB
1244 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1247 return mtrr_add(offset, size, flags, 1);
1250 static inline int drm_mtrr_del(int handle, unsigned long offset,
1251 unsigned long size, unsigned int flags)
1253 return mtrr_del(handle, offset, size);
1257 #define drm_core_has_MTRR(dev) (0)
1259 #define DRM_MTRR_WC 0
1261 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1267 static inline int drm_mtrr_del(int handle, unsigned long offset,
1268 unsigned long size, unsigned int flags)
1274 static inline void drm_device_set_unplugged(struct drm_device *dev)
1277 atomic_set(&dev->unplugged, 1);
1280 static inline int drm_device_is_unplugged(struct drm_device *dev)
1282 int ret = atomic_read(&dev->unplugged);
1287 static inline bool drm_modeset_is_locked(struct drm_device *dev)
1289 return mutex_is_locked(&dev->mode_config.mutex);
1292 /******************************************************************/
1293 /** \name Internal function definitions */
1296 /* Driver support (drm_drv.h) */
1297 extern long drm_ioctl(struct file *filp,
1298 unsigned int cmd, unsigned long arg);
1299 extern long drm_compat_ioctl(struct file *filp,
1300 unsigned int cmd, unsigned long arg);
1301 extern int drm_lastclose(struct drm_device *dev);
1303 /* Device support (drm_fops.h) */
1304 extern struct mutex drm_global_mutex;
1305 extern int drm_open(struct inode *inode, struct file *filp);
1306 extern int drm_stub_open(struct inode *inode, struct file *filp);
1307 extern int drm_fasync(int fd, struct file *filp, int on);
1308 extern ssize_t drm_read(struct file *filp, char __user *buffer,
1309 size_t count, loff_t *offset);
1310 extern int drm_release(struct inode *inode, struct file *filp);
1312 /* Mapping support (drm_vm.h) */
1313 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1314 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1315 extern void drm_vm_open_locked(struct drm_device *dev, struct vm_area_struct *vma);
1316 extern void drm_vm_close_locked(struct drm_device *dev, struct vm_area_struct *vma);
1317 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1319 /* Memory management support (drm_memory.h) */
1320 #include <drm/drm_memory.h>
1321 extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
1322 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
1323 extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
1324 struct page **pages,
1325 unsigned long num_pages,
1326 uint32_t gtt_offset,
1328 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
1330 /* Misc. IOCTL support (drm_ioctl.h) */
1331 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1332 struct drm_file *file_priv);
1333 extern int drm_getunique(struct drm_device *dev, void *data,
1334 struct drm_file *file_priv);
1335 extern int drm_setunique(struct drm_device *dev, void *data,
1336 struct drm_file *file_priv);
1337 extern int drm_getmap(struct drm_device *dev, void *data,
1338 struct drm_file *file_priv);
1339 extern int drm_getclient(struct drm_device *dev, void *data,
1340 struct drm_file *file_priv);
1341 extern int drm_getstats(struct drm_device *dev, void *data,
1342 struct drm_file *file_priv);
1343 extern int drm_getcap(struct drm_device *dev, void *data,
1344 struct drm_file *file_priv);
1345 extern int drm_setversion(struct drm_device *dev, void *data,
1346 struct drm_file *file_priv);
1347 extern int drm_noop(struct drm_device *dev, void *data,
1348 struct drm_file *file_priv);
1350 /* Context IOCTL support (drm_context.h) */
1351 extern int drm_resctx(struct drm_device *dev, void *data,
1352 struct drm_file *file_priv);
1353 extern int drm_addctx(struct drm_device *dev, void *data,
1354 struct drm_file *file_priv);
1355 extern int drm_modctx(struct drm_device *dev, void *data,
1356 struct drm_file *file_priv);
1357 extern int drm_getctx(struct drm_device *dev, void *data,
1358 struct drm_file *file_priv);
1359 extern int drm_switchctx(struct drm_device *dev, void *data,
1360 struct drm_file *file_priv);
1361 extern int drm_newctx(struct drm_device *dev, void *data,
1362 struct drm_file *file_priv);
1363 extern int drm_rmctx(struct drm_device *dev, void *data,
1364 struct drm_file *file_priv);
1366 extern int drm_ctxbitmap_init(struct drm_device *dev);
1367 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1368 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1370 extern int drm_setsareactx(struct drm_device *dev, void *data,
1371 struct drm_file *file_priv);
1372 extern int drm_getsareactx(struct drm_device *dev, void *data,
1373 struct drm_file *file_priv);
1375 /* Authentication IOCTL support (drm_auth.h) */
1376 extern int drm_getmagic(struct drm_device *dev, void *data,
1377 struct drm_file *file_priv);
1378 extern int drm_authmagic(struct drm_device *dev, void *data,
1379 struct drm_file *file_priv);
1380 extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic);
1382 /* Cache management (drm_cache.c) */
1383 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1384 void drm_clflush_sg(struct sg_table *st);
1385 void drm_clflush_virt_range(char *addr, unsigned long length);
1387 /* Locking IOCTL support (drm_lock.h) */
1388 extern int drm_lock(struct drm_device *dev, void *data,
1389 struct drm_file *file_priv);
1390 extern int drm_unlock(struct drm_device *dev, void *data,
1391 struct drm_file *file_priv);
1392 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1393 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1394 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1397 * These are exported to drivers so that they can implement fencing using
1398 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1401 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1403 /* Buffer management support (drm_bufs.h) */
1404 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1405 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1406 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1407 unsigned int size, enum drm_map_type type,
1408 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1409 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1410 struct drm_file *file_priv);
1411 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1412 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1413 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1414 struct drm_file *file_priv);
1415 extern int drm_addbufs(struct drm_device *dev, void *data,
1416 struct drm_file *file_priv);
1417 extern int drm_infobufs(struct drm_device *dev, void *data,
1418 struct drm_file *file_priv);
1419 extern int drm_markbufs(struct drm_device *dev, void *data,
1420 struct drm_file *file_priv);
1421 extern int drm_freebufs(struct drm_device *dev, void *data,
1422 struct drm_file *file_priv);
1423 extern int drm_mapbufs(struct drm_device *dev, void *data,
1424 struct drm_file *file_priv);
1425 extern int drm_order(unsigned long size);
1427 /* DMA support (drm_dma.h) */
1428 extern int drm_dma_setup(struct drm_device *dev);
1429 extern void drm_dma_takedown(struct drm_device *dev);
1430 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1431 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1432 struct drm_file *filp);
1434 /* IRQ support (drm_irq.h) */
1435 extern int drm_control(struct drm_device *dev, void *data,
1436 struct drm_file *file_priv);
1437 extern int drm_irq_install(struct drm_device *dev);
1438 extern int drm_irq_uninstall(struct drm_device *dev);
1440 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1441 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1442 struct drm_file *filp);
1443 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1444 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1445 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1446 struct timeval *vblanktime);
1447 extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
1448 struct drm_pending_vblank_event *e);
1449 extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1450 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1451 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1452 extern void drm_vblank_off(struct drm_device *dev, int crtc);
1453 extern void drm_vblank_cleanup(struct drm_device *dev);
1454 extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1455 struct timeval *tvblank, unsigned flags);
1456 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1457 int crtc, int *max_error,
1458 struct timeval *vblank_time,
1460 struct drm_crtc *refcrtc);
1461 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
1464 drm_mode_parse_command_line_for_connector(const char *mode_option,
1465 struct drm_connector *connector,
1466 struct drm_cmdline_mode *mode);
1468 extern struct drm_display_mode *
1469 drm_mode_create_from_cmdline_mode(struct drm_device *dev,
1470 struct drm_cmdline_mode *cmd);
1472 /* Modesetting support */
1473 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1474 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1475 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1476 struct drm_file *file_priv);
1478 /* AGP/GART support (drm_agpsupport.h) */
1479 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1480 extern int drm_agp_acquire(struct drm_device *dev);
1481 extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1482 struct drm_file *file_priv);
1483 extern int drm_agp_release(struct drm_device *dev);
1484 extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1485 struct drm_file *file_priv);
1486 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1487 extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1488 struct drm_file *file_priv);
1489 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1490 extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1491 struct drm_file *file_priv);
1492 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1493 extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1494 struct drm_file *file_priv);
1495 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1496 extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1497 struct drm_file *file_priv);
1498 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1499 extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1500 struct drm_file *file_priv);
1501 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1502 extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1503 struct drm_file *file_priv);
1505 /* Stub support (drm_stub.h) */
1506 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1507 struct drm_file *file_priv);
1508 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1509 struct drm_file *file_priv);
1510 struct drm_master *drm_master_create(struct drm_minor *minor);
1511 extern struct drm_master *drm_master_get(struct drm_master *master);
1512 extern void drm_master_put(struct drm_master **master);
1514 extern void drm_put_dev(struct drm_device *dev);
1515 extern int drm_put_minor(struct drm_minor **minor);
1516 extern void drm_unplug_dev(struct drm_device *dev);
1517 extern unsigned int drm_debug;
1519 extern unsigned int drm_vblank_offdelay;
1520 extern unsigned int drm_timestamp_precision;
1521 extern unsigned int drm_timestamp_monotonic;
1523 extern struct class *drm_class;
1524 extern struct proc_dir_entry *drm_proc_root;
1525 extern struct dentry *drm_debugfs_root;
1527 extern struct idr drm_minors_idr;
1529 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1531 /* Proc support (drm_proc.h) */
1532 extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1533 struct proc_dir_entry *root);
1534 extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1536 /* Debugfs support */
1537 #if defined(CONFIG_DEBUG_FS)
1538 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1539 struct dentry *root);
1540 extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1541 struct dentry *root, struct drm_minor *minor);
1542 extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1543 struct drm_minor *minor);
1544 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1547 /* Info file support */
1548 extern int drm_name_info(struct seq_file *m, void *data);
1549 extern int drm_vm_info(struct seq_file *m, void *data);
1550 extern int drm_bufs_info(struct seq_file *m, void *data);
1551 extern int drm_vblank_info(struct seq_file *m, void *data);
1552 extern int drm_clients_info(struct seq_file *m, void* data);
1553 extern int drm_gem_name_info(struct seq_file *m, void *data);
1556 extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
1557 struct drm_file *file_priv, uint32_t handle, uint32_t flags,
1559 extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
1560 struct drm_file *file_priv, int prime_fd, uint32_t *handle);
1562 extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
1563 struct drm_file *file_priv);
1564 extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data,
1565 struct drm_file *file_priv);
1567 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
1568 dma_addr_t *addrs, int max_pages);
1569 extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages);
1570 extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
1573 void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv);
1574 void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv);
1575 int drm_prime_add_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t handle);
1576 int drm_prime_lookup_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t *handle);
1577 void drm_prime_remove_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf);
1579 int drm_prime_add_dma_buf(struct drm_device *dev, struct drm_gem_object *obj);
1580 int drm_prime_lookup_obj(struct drm_device *dev, struct dma_buf *buf,
1581 struct drm_gem_object **obj);
1584 extern int drm_vma_info(struct seq_file *m, void *data);
1587 /* Scatter Gather Support (drm_scatter.h) */
1588 extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1589 extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1590 struct drm_file *file_priv);
1591 extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1592 extern int drm_sg_free(struct drm_device *dev, void *data,
1593 struct drm_file *file_priv);
1595 /* ATI PCIGART support (ati_pcigart.h) */
1596 extern int drm_ati_pcigart_init(struct drm_device *dev,
1597 struct drm_ati_pcigart_info * gart_info);
1598 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1599 struct drm_ati_pcigart_info * gart_info);
1601 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1603 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1604 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1606 /* sysfs support (drm_sysfs.c) */
1607 struct drm_sysfs_class;
1608 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1609 extern void drm_sysfs_destroy(void);
1610 extern int drm_sysfs_device_add(struct drm_minor *minor);
1611 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1612 extern void drm_sysfs_device_remove(struct drm_minor *minor);
1613 extern char *drm_get_connector_status_name(enum drm_connector_status status);
1614 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1615 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1617 /* Graphics Execution Manager library functions (drm_gem.c) */
1618 int drm_gem_init(struct drm_device *dev);
1619 void drm_gem_destroy(struct drm_device *dev);
1620 void drm_gem_object_release(struct drm_gem_object *obj);
1621 void drm_gem_object_free(struct kref *kref);
1622 struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1624 int drm_gem_object_init(struct drm_device *dev,
1625 struct drm_gem_object *obj, size_t size);
1626 int drm_gem_private_object_init(struct drm_device *dev,
1627 struct drm_gem_object *obj, size_t size);
1628 void drm_gem_object_handle_free(struct drm_gem_object *obj);
1629 void drm_gem_vm_open(struct vm_area_struct *vma);
1630 void drm_gem_vm_close(struct vm_area_struct *vma);
1631 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1633 #include <drm/drm_global.h>
1636 drm_gem_object_reference(struct drm_gem_object *obj)
1638 kref_get(&obj->refcount);
1642 drm_gem_object_unreference(struct drm_gem_object *obj)
1645 kref_put(&obj->refcount, drm_gem_object_free);
1649 drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1652 struct drm_device *dev = obj->dev;
1653 mutex_lock(&dev->struct_mutex);
1654 kref_put(&obj->refcount, drm_gem_object_free);
1655 mutex_unlock(&dev->struct_mutex);
1659 int drm_gem_handle_create(struct drm_file *file_priv,
1660 struct drm_gem_object *obj,
1662 int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
1665 drm_gem_object_handle_reference(struct drm_gem_object *obj)
1667 drm_gem_object_reference(obj);
1668 atomic_inc(&obj->handle_count);
1672 drm_gem_object_handle_unreference(struct drm_gem_object *obj)
1677 if (atomic_read(&obj->handle_count) == 0)
1680 * Must bump handle count first as this may be the last
1681 * ref, in which case the object would disappear before we
1682 * checked for a name
1684 if (atomic_dec_and_test(&obj->handle_count))
1685 drm_gem_object_handle_free(obj);
1686 drm_gem_object_unreference(obj);
1690 drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj)
1695 if (atomic_read(&obj->handle_count) == 0)
1699 * Must bump handle count first as this may be the last
1700 * ref, in which case the object would disappear before we
1701 * checked for a name
1704 if (atomic_dec_and_test(&obj->handle_count))
1705 drm_gem_object_handle_free(obj);
1706 drm_gem_object_unreference_unlocked(obj);
1709 void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
1710 int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
1712 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1713 struct drm_file *filp,
1715 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1716 struct drm_file *file_priv);
1717 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1718 struct drm_file *file_priv);
1719 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1720 struct drm_file *file_priv);
1721 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1722 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1724 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1725 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1726 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1728 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1731 struct drm_map_list *_entry;
1732 list_for_each_entry(_entry, &dev->maplist, head)
1733 if (_entry->user_token == token)
1738 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1742 #include <drm/drm_mem_util.h>
1744 extern int drm_fill_in_dev(struct drm_device *dev,
1745 const struct pci_device_id *ent,
1746 struct drm_driver *driver);
1747 int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
1751 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1753 if (dev->driver->device_is_agp != NULL) {
1754 int err = (*dev->driver->device_is_agp) (dev);
1761 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1764 extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1765 extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1766 extern int drm_get_pci_dev(struct pci_dev *pdev,
1767 const struct pci_device_id *ent,
1768 struct drm_driver *driver);
1770 #define DRM_PCIE_SPEED_25 1
1771 #define DRM_PCIE_SPEED_50 2
1772 #define DRM_PCIE_SPEED_80 4
1774 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
1776 /* platform section */
1777 extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1778 extern void drm_platform_exit(struct drm_driver *driver, struct platform_device *platform_device);
1780 extern int drm_get_platform_dev(struct platform_device *pdev,
1781 struct drm_driver *driver);
1783 /* returns true if currently okay to sleep */
1784 static __inline__ bool drm_can_sleep(void)
1786 if (in_atomic() || in_dbg_master() || irqs_disabled())
1791 #endif /* __KERNEL__ */