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/module.h>
46 #include <linux/kernel.h>
47 #include <linux/miscdevice.h>
49 #include <linux/proc_fs.h>
50 #include <linux/init.h>
51 #include <linux/file.h>
52 #include <linux/platform_device.h>
53 #include <linux/pci.h>
54 #include <linux/jiffies.h>
55 #include <linux/dma-mapping.h>
57 #include <linux/cdev.h>
58 #include <linux/mutex.h>
59 #include <linux/slab.h>
60 #if defined(__alpha__) || defined(__powerpc__)
61 #include <asm/pgtable.h> /* For pte_wrprotect */
65 #include <asm/uaccess.h>
69 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
70 #include <linux/types.h>
71 #include <linux/agp_backend.h>
73 #include <linux/workqueue.h>
74 #include <linux/poll.h>
75 #include <asm/pgalloc.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))
86 #include "drm_os_linux.h"
87 #include "drm_hashtab.h"
90 #define DRM_UT_CORE 0x01
91 #define DRM_UT_DRIVER 0x02
92 #define DRM_UT_KMS 0x04
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 __attribute__((format (printf, 4, 5)))
126 void drm_ut_debug_printk(unsigned int request_level,
128 const char *function_name,
129 const char *format, ...);
130 extern __attribute__((format (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_USE_MTRR 0x4
141 #define DRIVER_PCI_DMA 0x8
142 #define DRIVER_SG 0x10
143 #define DRIVER_HAVE_DMA 0x20
144 #define DRIVER_HAVE_IRQ 0x40
145 #define DRIVER_IRQ_SHARED 0x80
146 #define DRIVER_IRQ_VBL 0x100
147 #define DRIVER_DMA_QUEUE 0x200
148 #define DRIVER_FB_DMA 0x400
149 #define DRIVER_IRQ_VBL2 0x800
150 #define DRIVER_GEM 0x1000
151 #define DRIVER_MODESET 0x2000
153 #define DRIVER_BUS_PCI 0x1
154 #define DRIVER_BUS_PLATFORM 0x2
155 #define DRIVER_BUS_USB 0x3
157 /***********************************************************************/
158 /** \name Begin the DRM... */
161 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
162 also include looping detection. */
164 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
165 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
166 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
167 #define DRM_LOOPING_LIMIT 5000000
168 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
169 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
171 #define DRM_FLAG_DEBUG 0x01
173 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
174 #define DRM_MAP_HASH_OFFSET 0x10000000
178 /***********************************************************************/
179 /** \name Macros to make printk easier */
185 * \param fmt printf() like format string.
186 * \param arg arguments
188 #define DRM_ERROR(fmt, ...) \
189 drm_err(__func__, fmt, ##__VA_ARGS__)
191 #define DRM_INFO(fmt, ...) \
192 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
197 * \param fmt printf() like format string.
198 * \param arg arguments
201 #define DRM_DEBUG(fmt, args...) \
203 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
204 __func__, fmt, ##args); \
207 #define DRM_DEBUG_DRIVER(fmt, args...) \
209 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
210 __func__, fmt, ##args); \
212 #define DRM_DEBUG_KMS(fmt, args...) \
214 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
215 __func__, fmt, ##args); \
217 #define DRM_LOG(fmt, args...) \
219 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
220 NULL, fmt, ##args); \
222 #define DRM_LOG_KMS(fmt, args...) \
224 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
225 NULL, fmt, ##args); \
227 #define DRM_LOG_MODE(fmt, args...) \
229 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
230 NULL, fmt, ##args); \
232 #define DRM_LOG_DRIVER(fmt, args...) \
234 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
235 NULL, fmt, ##args); \
238 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
239 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
240 #define DRM_DEBUG(fmt, arg...) do { } while (0)
241 #define DRM_LOG(fmt, arg...) do { } while (0)
242 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
243 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
244 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
250 /***********************************************************************/
251 /** \name Internal types and structures */
254 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
256 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
257 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
259 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
262 * Test that the hardware lock is held by the caller, returning otherwise.
264 * \param dev DRM device.
265 * \param filp file pointer of the caller.
267 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
269 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
270 _file_priv->master->lock.file_priv != _file_priv) { \
271 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
272 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
273 _file_priv->master->lock.file_priv, _file_priv); \
279 * Ioctl function type.
281 * \param inode device inode.
282 * \param file_priv DRM file private pointer.
283 * \param cmd command.
284 * \param arg argument.
286 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
287 struct drm_file *file_priv);
289 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
292 #define DRM_IOCTL_NR(n) _IOC_NR(n)
293 #define DRM_MAJOR 226
296 #define DRM_MASTER 0x2
297 #define DRM_ROOT_ONLY 0x4
298 #define DRM_CONTROL_ALLOW 0x8
299 #define DRM_UNLOCKED 0x10
301 struct drm_ioctl_desc {
305 unsigned int cmd_drv;
309 * Creates a driver or general drm_ioctl_desc array entry for the given
310 * ioctl, for use by drm_ioctl().
313 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
314 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl}
316 struct drm_magic_entry {
317 struct list_head head;
318 struct drm_hash_item hash_item;
319 struct drm_file *priv;
322 struct drm_vma_entry {
323 struct list_head head;
324 struct vm_area_struct *vma;
332 int idx; /**< Index into master buflist */
333 int total; /**< Buffer size */
334 int order; /**< log-base-2(total) */
335 int used; /**< Amount of buffer in use (for DMA) */
336 unsigned long offset; /**< Byte offset (used internally) */
337 void *address; /**< Address of buffer */
338 unsigned long bus_address; /**< Bus address of buffer */
339 struct drm_buf *next; /**< Kernel-only: used for free list */
340 __volatile__ int waiting; /**< On kernel DMA queue */
341 __volatile__ int pending; /**< On hardware DMA queue */
342 wait_queue_head_t dma_wait; /**< Processes waiting */
343 struct drm_file *file_priv; /**< Private of holding file descr */
344 int context; /**< Kernel queue for this buffer */
345 int while_locked; /**< Dispatch this buffer while locked */
353 } list; /**< Which list we're on */
355 int dev_priv_size; /**< Size of buffer private storage */
356 void *dev_private; /**< Per-buffer private storage */
359 /** bufs is one longer than it has to be */
360 struct drm_waitlist {
361 int count; /**< Number of possible buffers */
362 struct drm_buf **bufs; /**< List of pointers to buffers */
363 struct drm_buf **rp; /**< Read pointer */
364 struct drm_buf **wp; /**< Write pointer */
365 struct drm_buf **end; /**< End pointer */
366 spinlock_t read_lock;
367 spinlock_t write_lock;
370 struct drm_freelist {
371 int initialized; /**< Freelist in use */
372 atomic_t count; /**< Number of free buffers */
373 struct drm_buf *next; /**< End pointer */
375 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
376 int low_mark; /**< Low water mark */
377 int high_mark; /**< High water mark */
378 atomic_t wfh; /**< If waiting for high mark */
382 typedef struct drm_dma_handle {
389 * Buffer entry. There is one of this for each buffer size order.
391 struct drm_buf_entry {
392 int buf_size; /**< size */
393 int buf_count; /**< number of buffers */
394 struct drm_buf *buflist; /**< buffer list */
397 struct drm_dma_handle **seglist;
399 struct drm_freelist freelist;
402 /* Event queued up for userspace to read */
403 struct drm_pending_event {
404 struct drm_event *event;
405 struct list_head link;
406 struct drm_file *file_priv;
407 pid_t pid; /* pid of requester, no guarantee it's valid by the time
408 we deliver the event, for tracing only */
409 void (*destroy)(struct drm_pending_event *event);
412 /** File private data */
418 unsigned long ioctl_count;
419 struct list_head lhead;
420 struct drm_minor *minor;
421 unsigned long lock_count;
423 /** Mapping of mm object handles to object pointers. */
424 struct idr object_idr;
425 /** Lock for synchronization of access to object_idr. */
426 spinlock_t table_lock;
431 int is_master; /* this file private is a master for a minor */
432 struct drm_master *master; /* master this node is currently associated with
433 N.B. not always minor->master */
434 struct list_head fbs;
436 wait_queue_head_t event_wait;
437 struct list_head event_list;
443 atomic_t use_count; /**< Outstanding uses (+1) */
444 atomic_t finalization; /**< Finalization in progress */
445 atomic_t block_count; /**< Count of processes waiting */
446 atomic_t block_read; /**< Queue blocked for reads */
447 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
448 atomic_t block_write; /**< Queue blocked for writes */
449 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
450 atomic_t total_queued; /**< Total queued statistic */
451 atomic_t total_flushed; /**< Total flushes statistic */
452 atomic_t total_locks; /**< Total locks statistics */
453 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
454 struct drm_waitlist waitlist; /**< Pending buffers */
455 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
461 struct drm_lock_data {
462 struct drm_hw_lock *hw_lock; /**< Hardware lock */
463 /** Private of lock holder's file (NULL=kernel) */
464 struct drm_file *file_priv;
465 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
466 unsigned long lock_time; /**< Time of last lock in jiffies */
468 uint32_t kernel_waiters;
469 uint32_t user_waiters;
476 struct drm_device_dma {
478 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
479 int buf_count; /**< total number of buffers */
480 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
482 int page_count; /**< number of pages */
483 unsigned long *pagelist; /**< page list */
484 unsigned long byte_count;
486 _DRM_DMA_USE_AGP = 0x01,
487 _DRM_DMA_USE_SG = 0x02,
488 _DRM_DMA_USE_FB = 0x04,
489 _DRM_DMA_USE_PCI_RO = 0x08
495 * AGP memory entry. Stored as a doubly linked list.
498 unsigned long handle; /**< handle */
500 unsigned long bound; /**< address */
502 struct list_head head;
508 * \sa drm_agp_init() and drm_device::agp.
510 struct drm_agp_head {
511 DRM_AGP_KERN agp_info; /**< AGP device information */
512 struct list_head memory;
513 unsigned long mode; /**< AGP mode */
514 struct agp_bridge_data *bridge;
515 int enabled; /**< whether the AGP bus as been enabled */
516 int acquired; /**< whether the AGP device has been acquired */
519 int cant_use_aperture;
520 unsigned long page_mask;
524 * Scatter-gather memory.
527 unsigned long handle;
530 struct page **pagelist;
536 struct drm_hw_lock *lock;
541 * Kernel side of a mapping
543 struct drm_local_map {
544 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
545 unsigned long size; /**< Requested physical size (bytes) */
546 enum drm_map_type type; /**< Type of memory to map */
547 enum drm_map_flags flags; /**< Flags */
548 void *handle; /**< User-space: "Handle" to pass to mmap() */
549 /**< Kernel-space: kernel-virtual address */
550 int mtrr; /**< MTRR slot used */
553 typedef struct drm_local_map drm_local_map_t;
558 struct drm_map_list {
559 struct list_head head; /**< list head */
560 struct drm_hash_item hash;
561 struct drm_local_map *map; /**< mapping */
563 struct drm_master *master;
564 struct drm_mm_node *file_offset_node; /**< fake offset */
568 * Context handle list
570 struct drm_ctx_list {
571 struct list_head head; /**< list head */
572 drm_context_t handle; /**< context handle */
573 struct drm_file *tag; /**< associated fd private data */
576 /* location of GART table */
577 #define DRM_ATI_GART_MAIN 1
578 #define DRM_ATI_GART_FB 2
580 #define DRM_ATI_GART_PCI 1
581 #define DRM_ATI_GART_PCIE 2
582 #define DRM_ATI_GART_IGP 3
584 struct drm_ati_pcigart_info {
585 int gart_table_location;
589 dma_addr_t table_mask;
590 struct drm_dma_handle *table_handle;
591 struct drm_local_map mapping;
596 * GEM specific mm private for tracking GEM objects
599 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */
600 struct drm_open_hash offset_hash; /**< User token hash table for maps */
604 * This structure defines the drm_mm memory object, which will be used by the
605 * DRM for its buffer objects.
607 struct drm_gem_object {
608 /** Reference count of this object */
609 struct kref refcount;
611 /** Handle count of this object. Each handle also holds a reference */
612 atomic_t handle_count; /* number of handles on this object */
614 /** Related drm device */
615 struct drm_device *dev;
617 /** File representing the shmem storage */
620 /* Mapping info for this object */
621 struct drm_map_list map_list;
624 * Size of the object, in bytes. Immutable over the object's
630 * Global name for this object, starts at 1. 0 means unnamed.
631 * Access is covered by the object_name_lock in the related drm_device
636 * Memory domains. These monitor which caches contain read/write data
637 * related to the object. When transitioning from one set of domains
638 * to another, the driver is called to ensure that caches are suitably
639 * flushed and invalidated
641 uint32_t read_domains;
642 uint32_t write_domain;
645 * While validating an exec operation, the
646 * new read/write domain values are computed here.
647 * They will be transferred to the above values
648 * at the point that any cache flushing occurs
650 uint32_t pending_read_domains;
651 uint32_t pending_write_domain;
653 void *driver_private;
656 #include "drm_crtc.h"
658 /* per-master structure */
661 struct kref refcount; /* refcount for this master */
663 struct list_head head; /**< each minor contains a list of masters */
664 struct drm_minor *minor; /**< link back to minor we are a master for */
666 char *unique; /**< Unique identifier: e.g., busid */
667 int unique_len; /**< Length of unique field */
668 int unique_size; /**< amount allocated */
670 int blocked; /**< Blocked due to VC switch? */
672 /** \name Authentication */
674 struct drm_open_hash magiclist;
675 struct list_head magicfree;
678 struct drm_lock_data lock; /**< Information on hardware lock */
680 void *driver_priv; /**< Private structure for driver to use */
683 /* Size of ringbuffer for vblank timestamps. Just double-buffer
684 * in initial implementation.
686 #define DRM_VBLANKTIME_RBSIZE 2
688 /* Flags and return codes for get_vblank_timestamp() driver function. */
689 #define DRM_CALLED_FROM_VBLIRQ 1
690 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
691 #define DRM_VBLANKTIME_INVBL (1 << 1)
693 /* get_scanout_position() return flags */
694 #define DRM_SCANOUTPOS_VALID (1 << 0)
695 #define DRM_SCANOUTPOS_INVBL (1 << 1)
696 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
700 int (*get_irq)(struct drm_device *dev);
701 const char *(*get_name)(struct drm_device *dev);
702 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
703 int (*set_unique)(struct drm_device *dev, struct drm_master *master,
704 struct drm_unique *unique);
705 int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
706 /* hooks that are for PCI */
707 int (*agp_init)(struct drm_device *dev);
712 * DRM driver structure. This structure represent the common code for
713 * a family of cards. There will one drm_device for each card present
717 int (*load) (struct drm_device *, unsigned long flags);
718 int (*firstopen) (struct drm_device *);
719 int (*open) (struct drm_device *, struct drm_file *);
720 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
721 void (*postclose) (struct drm_device *, struct drm_file *);
722 void (*lastclose) (struct drm_device *);
723 int (*unload) (struct drm_device *);
724 int (*suspend) (struct drm_device *, pm_message_t state);
725 int (*resume) (struct drm_device *);
726 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
727 int (*dma_quiescent) (struct drm_device *);
728 int (*context_dtor) (struct drm_device *dev, int context);
731 * get_vblank_counter - get raw hardware vblank counter
733 * @crtc: counter to fetch
735 * Driver callback for fetching a raw hardware vblank counter
736 * for @crtc. If a device doesn't have a hardware counter, the
737 * driver can simply return the value of drm_vblank_count and
738 * make the enable_vblank() and disable_vblank() hooks into no-ops,
739 * leaving interrupts enabled at all times.
741 * Wraparound handling and loss of events due to modesetting is dealt
742 * with in the DRM core code.
745 * Raw vblank counter value.
747 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
750 * enable_vblank - enable vblank interrupt events
752 * @crtc: which irq to enable
754 * Enable vblank interrupts for @crtc. If the device doesn't have
755 * a hardware vblank counter, this routine should be a no-op, since
756 * interrupts will have to stay on to keep the count accurate.
759 * Zero on success, appropriate errno if the given @crtc's vblank
760 * interrupt cannot be enabled.
762 int (*enable_vblank) (struct drm_device *dev, int crtc);
765 * disable_vblank - disable vblank interrupt events
767 * @crtc: which irq to enable
769 * Disable vblank interrupts for @crtc. If the device doesn't have
770 * a hardware vblank counter, this routine should be a no-op, since
771 * interrupts will have to stay on to keep the count accurate.
773 void (*disable_vblank) (struct drm_device *dev, int crtc);
776 * Called by \c drm_device_is_agp. Typically used to determine if a
777 * card is really attached to AGP or not.
779 * \param dev DRM device handle
782 * One of three values is returned depending on whether or not the
783 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
784 * (return of 1), or may or may not be AGP (return of 2).
786 int (*device_is_agp) (struct drm_device *dev);
789 * Called by vblank timestamping code.
791 * Return the current display scanout position from a crtc.
793 * \param dev DRM device.
794 * \param crtc Id of the crtc to query.
795 * \param *vpos Target location for current vertical scanout position.
796 * \param *hpos Target location for current horizontal scanout position.
798 * Returns vpos as a positive number while in active scanout area.
799 * Returns vpos as a negative number inside vblank, counting the number
800 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
801 * until start of active scanout / end of vblank."
803 * \return Flags, or'ed together as follows:
805 * DRM_SCANOUTPOS_VALID = Query successful.
806 * DRM_SCANOUTPOS_INVBL = Inside vblank.
807 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
808 * this flag means that returned position may be offset by a constant
809 * but unknown small number of scanlines wrt. real scanout position.
812 int (*get_scanout_position) (struct drm_device *dev, int crtc,
813 int *vpos, int *hpos);
816 * Called by \c drm_get_last_vbltimestamp. Should return a precise
817 * timestamp when the most recent VBLANK interval ended or will end.
819 * Specifically, the timestamp in @vblank_time should correspond as
820 * closely as possible to the time when the first video scanline of
821 * the video frame after the end of VBLANK will start scanning out,
822 * the time immmediately after end of the VBLANK interval. If the
823 * @crtc is currently inside VBLANK, this will be a time in the future.
824 * If the @crtc is currently scanning out a frame, this will be the
825 * past start time of the current scanout. This is meant to adhere
826 * to the OpenML OML_sync_control extension specification.
828 * \param dev dev DRM device handle.
829 * \param crtc crtc for which timestamp should be returned.
830 * \param *max_error Maximum allowable timestamp error in nanoseconds.
831 * Implementation should strive to provide timestamp
832 * with an error of at most *max_error nanoseconds.
833 * Returns true upper bound on error for timestamp.
834 * \param *vblank_time Target location for returned vblank timestamp.
835 * \param flags 0 = Defaults, no special treatment needed.
836 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
837 * irq handler. Some drivers need to apply some workarounds
838 * for gpu-specific vblank irq quirks if flag is set.
841 * Zero if timestamping isn't supported in current display mode or a
842 * negative number on failure. A positive status code on success,
843 * which describes how the vblank_time timestamp was computed.
845 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
847 struct timeval *vblank_time,
850 /* these have to be filled in */
852 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
853 void (*irq_preinstall) (struct drm_device *dev);
854 int (*irq_postinstall) (struct drm_device *dev);
855 void (*irq_uninstall) (struct drm_device *dev);
856 void (*reclaim_buffers) (struct drm_device *dev,
857 struct drm_file * file_priv);
858 void (*reclaim_buffers_locked) (struct drm_device *dev,
859 struct drm_file *file_priv);
860 void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
861 struct drm_file *file_priv);
862 void (*set_version) (struct drm_device *dev,
863 struct drm_set_version *sv);
865 /* Master routines */
866 int (*master_create)(struct drm_device *dev, struct drm_master *master);
867 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
869 * master_set is called whenever the minor master is set.
870 * master_drop is called whenever the minor master is dropped.
873 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
875 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
878 int (*debugfs_init)(struct drm_minor *minor);
879 void (*debugfs_cleanup)(struct drm_minor *minor);
882 * Driver-specific constructor for drm_gem_objects, to set up
883 * obj->driver_private.
885 * Returns 0 on success.
887 int (*gem_init_object) (struct drm_gem_object *obj);
888 void (*gem_free_object) (struct drm_gem_object *obj);
890 /* vga arb irq handler */
891 void (*vgaarb_irq)(struct drm_device *dev, bool state);
893 /* dumb alloc support */
894 int (*dumb_create)(struct drm_file *file_priv,
895 struct drm_device *dev,
896 struct drm_mode_create_dumb *args);
897 int (*dumb_map_offset)(struct drm_file *file_priv,
898 struct drm_device *dev, uint32_t handle,
900 int (*dumb_destroy)(struct drm_file *file_priv,
901 struct drm_device *dev,
904 /* Driver private ops for this object */
905 struct vm_operations_struct *gem_vm_ops;
916 struct drm_ioctl_desc *ioctls;
918 struct file_operations fops;
920 struct pci_driver *pci;
921 struct platform_device *platform_device;
922 struct usb_driver *usb;
926 /* List of devices hanging off this driver */
927 struct list_head device_list;
930 #define DRM_MINOR_UNASSIGNED 0
931 #define DRM_MINOR_LEGACY 1
932 #define DRM_MINOR_CONTROL 2
933 #define DRM_MINOR_RENDER 3
937 * debugfs node list. This structure represents a debugfs file to
938 * be created by the drm core
940 struct drm_debugfs_list {
941 const char *name; /** file name */
942 int (*show)(struct seq_file*, void*); /** show callback */
943 u32 driver_features; /**< Required driver features for this entry */
947 * debugfs node structure. This structure represents a debugfs file.
949 struct drm_debugfs_node {
950 struct list_head list;
951 struct drm_minor *minor;
952 struct drm_debugfs_list *debugfs_ent;
957 * Info file list entry. This structure represents a debugfs or proc file to
958 * be created by the drm core
960 struct drm_info_list {
961 const char *name; /** file name */
962 int (*show)(struct seq_file*, void*); /** show callback */
963 u32 driver_features; /**< Required driver features for this entry */
968 * debugfs node structure. This structure represents a debugfs file.
970 struct drm_info_node {
971 struct list_head list;
972 struct drm_minor *minor;
973 struct drm_info_list *info_ent;
978 * DRM minor structure. This structure represents a drm minor number.
981 int index; /**< Minor device number */
982 int type; /**< Control or render */
983 dev_t device; /**< Device number for mknod */
984 struct device kdev; /**< Linux device */
985 struct drm_device *dev;
987 struct proc_dir_entry *proc_root; /**< proc directory entry */
988 struct drm_info_node proc_nodes;
989 struct dentry *debugfs_root;
990 struct drm_info_node debugfs_nodes;
992 struct drm_master *master; /* currently active master for this node */
993 struct list_head master_list;
994 struct drm_mode_group mode_group;
997 struct drm_pending_vblank_event {
998 struct drm_pending_event base;
1000 struct drm_event_vblank event;
1004 * DRM device structure. This structure represent a complete card that
1005 * may contain multiple heads.
1008 struct list_head driver_item; /**< list of devices per driver */
1009 char *devname; /**< For /proc/interrupts */
1010 int if_version; /**< Highest interface version set */
1014 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1015 struct mutex struct_mutex; /**< For others */
1018 /** \name Usage Counters */
1020 int open_count; /**< Outstanding files open */
1021 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
1022 atomic_t vma_count; /**< Outstanding vma areas open */
1023 int buf_use; /**< Buffers in use -- cannot alloc */
1024 atomic_t buf_alloc; /**< Buffer allocation in progress */
1027 /** \name Performance counters */
1029 unsigned long counters;
1030 enum drm_stat_type types[15];
1031 atomic_t counts[15];
1034 struct list_head filelist;
1036 /** \name Memory management */
1038 struct list_head maplist; /**< Linked list of regions */
1039 int map_count; /**< Number of mappable regions */
1040 struct drm_open_hash map_hash; /**< User token hash table for maps */
1042 /** \name Context handle management */
1044 struct list_head ctxlist; /**< Linked list of context handles */
1045 int ctx_count; /**< Number of context handles */
1046 struct mutex ctxlist_mutex; /**< For ctxlist */
1050 struct list_head vmalist; /**< List of vmas (for debugging) */
1054 /** \name DMA queues (contexts) */
1056 int queue_count; /**< Number of active DMA queues */
1057 int queue_reserved; /**< Number of reserved DMA queues */
1058 int queue_slots; /**< Actual length of queuelist */
1059 struct drm_queue **queuelist; /**< Vector of pointers to DMA queues */
1060 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1063 /** \name Context support */
1065 int irq_enabled; /**< True if irq handler is enabled */
1066 __volatile__ long context_flag; /**< Context swapping flag */
1067 __volatile__ long interrupt_flag; /**< Interruption handler flag */
1068 __volatile__ long dma_flag; /**< DMA dispatch flag */
1069 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
1070 int last_checked; /**< Last context checked for DMA */
1071 int last_context; /**< Last current context */
1072 unsigned long last_switch; /**< jiffies at last context switch */
1075 struct work_struct work;
1076 /** \name VBLANK IRQ support */
1080 * At load time, disabling the vblank interrupt won't be allowed since
1081 * old clients may not call the modeset ioctl and therefore misbehave.
1082 * Once the modeset ioctl *has* been called though, we can safely
1083 * disable them when unused.
1085 int vblank_disable_allowed;
1087 wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */
1088 atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1089 struct timeval *_vblank_time; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1090 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1091 spinlock_t vbl_lock;
1092 atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */
1093 u32 *last_vblank; /* protected by dev->vbl_lock, used */
1094 /* for wraparound handling */
1095 int *vblank_enabled; /* so we don't call enable more than
1097 int *vblank_inmodeset; /* Display driver is setting mode */
1098 u32 *last_vblank_wait; /* Last vblank seqno waited per CRTC */
1099 struct timer_list vblank_disable_timer;
1101 u32 max_vblank_count; /**< size of vblank counter register */
1106 struct list_head vblank_event_list;
1107 spinlock_t event_lock;
1113 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
1114 wait_queue_head_t buf_readers; /**< Processes waiting to read */
1115 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
1117 struct drm_agp_head *agp; /**< AGP data */
1119 struct device *dev; /**< Device structure */
1120 struct pci_dev *pdev; /**< PCI device structure */
1121 int pci_vendor; /**< PCI vendor id */
1122 int pci_device; /**< PCI device id */
1124 struct pci_controller *hose;
1127 struct platform_device *platformdev; /**< Platform device struture */
1128 struct usb_device *usbdev;
1130 struct drm_sg_mem *sg; /**< Scatter gather memory */
1131 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1132 void *dev_private; /**< device private data */
1134 struct address_space *dev_mapping;
1135 struct drm_sigdata sigdata; /**< For block_all_signals */
1138 struct drm_driver *driver;
1139 struct drm_local_map *agp_buffer_map;
1140 unsigned int agp_buffer_token;
1141 struct drm_minor *control; /**< Control node for card */
1142 struct drm_minor *primary; /**< render type primary screen head */
1144 struct drm_mode_config mode_config; /**< Current mode config */
1146 /** \name GEM information */
1148 spinlock_t object_name_lock;
1149 struct idr object_name_idr;
1151 int switch_power_state;
1154 #define DRM_SWITCH_POWER_ON 0
1155 #define DRM_SWITCH_POWER_OFF 1
1156 #define DRM_SWITCH_POWER_CHANGING 2
1158 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1161 return ((dev->driver->driver_features & feature) ? 1 : 0);
1164 static inline int drm_dev_to_irq(struct drm_device *dev)
1166 return dev->driver->bus->get_irq(dev);
1171 static inline int drm_core_has_AGP(struct drm_device *dev)
1173 return drm_core_check_feature(dev, DRIVER_USE_AGP);
1176 #define drm_core_has_AGP(dev) (0)
1180 static inline int drm_core_has_MTRR(struct drm_device *dev)
1182 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1185 #define DRM_MTRR_WC MTRR_TYPE_WRCOMB
1187 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1190 return mtrr_add(offset, size, flags, 1);
1193 static inline int drm_mtrr_del(int handle, unsigned long offset,
1194 unsigned long size, unsigned int flags)
1196 return mtrr_del(handle, offset, size);
1200 #define drm_core_has_MTRR(dev) (0)
1202 #define DRM_MTRR_WC 0
1204 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1210 static inline int drm_mtrr_del(int handle, unsigned long offset,
1211 unsigned long size, unsigned int flags)
1217 /******************************************************************/
1218 /** \name Internal function definitions */
1221 /* Driver support (drm_drv.h) */
1222 extern long drm_ioctl(struct file *filp,
1223 unsigned int cmd, unsigned long arg);
1224 extern long drm_compat_ioctl(struct file *filp,
1225 unsigned int cmd, unsigned long arg);
1226 extern int drm_lastclose(struct drm_device *dev);
1228 /* Device support (drm_fops.h) */
1229 extern struct mutex drm_global_mutex;
1230 extern int drm_open(struct inode *inode, struct file *filp);
1231 extern int drm_stub_open(struct inode *inode, struct file *filp);
1232 extern int drm_fasync(int fd, struct file *filp, int on);
1233 extern ssize_t drm_read(struct file *filp, char __user *buffer,
1234 size_t count, loff_t *offset);
1235 extern int drm_release(struct inode *inode, struct file *filp);
1237 /* Mapping support (drm_vm.h) */
1238 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1239 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1240 extern void drm_vm_open_locked(struct vm_area_struct *vma);
1241 extern void drm_vm_close_locked(struct vm_area_struct *vma);
1242 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1244 /* Memory management support (drm_memory.h) */
1245 #include "drm_memory.h"
1246 extern void drm_mem_init(void);
1247 extern int drm_mem_info(char *buf, char **start, off_t offset,
1248 int request, int *eof, void *data);
1249 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
1251 extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
1252 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
1253 extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
1254 struct page **pages,
1255 unsigned long num_pages,
1256 uint32_t gtt_offset,
1258 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
1260 /* Misc. IOCTL support (drm_ioctl.h) */
1261 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1262 struct drm_file *file_priv);
1263 extern int drm_getunique(struct drm_device *dev, void *data,
1264 struct drm_file *file_priv);
1265 extern int drm_setunique(struct drm_device *dev, void *data,
1266 struct drm_file *file_priv);
1267 extern int drm_getmap(struct drm_device *dev, void *data,
1268 struct drm_file *file_priv);
1269 extern int drm_getclient(struct drm_device *dev, void *data,
1270 struct drm_file *file_priv);
1271 extern int drm_getstats(struct drm_device *dev, void *data,
1272 struct drm_file *file_priv);
1273 extern int drm_getcap(struct drm_device *dev, void *data,
1274 struct drm_file *file_priv);
1275 extern int drm_setversion(struct drm_device *dev, void *data,
1276 struct drm_file *file_priv);
1277 extern int drm_noop(struct drm_device *dev, void *data,
1278 struct drm_file *file_priv);
1280 /* Context IOCTL support (drm_context.h) */
1281 extern int drm_resctx(struct drm_device *dev, void *data,
1282 struct drm_file *file_priv);
1283 extern int drm_addctx(struct drm_device *dev, void *data,
1284 struct drm_file *file_priv);
1285 extern int drm_modctx(struct drm_device *dev, void *data,
1286 struct drm_file *file_priv);
1287 extern int drm_getctx(struct drm_device *dev, void *data,
1288 struct drm_file *file_priv);
1289 extern int drm_switchctx(struct drm_device *dev, void *data,
1290 struct drm_file *file_priv);
1291 extern int drm_newctx(struct drm_device *dev, void *data,
1292 struct drm_file *file_priv);
1293 extern int drm_rmctx(struct drm_device *dev, void *data,
1294 struct drm_file *file_priv);
1296 extern int drm_ctxbitmap_init(struct drm_device *dev);
1297 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1298 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1300 extern int drm_setsareactx(struct drm_device *dev, void *data,
1301 struct drm_file *file_priv);
1302 extern int drm_getsareactx(struct drm_device *dev, void *data,
1303 struct drm_file *file_priv);
1305 /* Authentication IOCTL support (drm_auth.h) */
1306 extern int drm_getmagic(struct drm_device *dev, void *data,
1307 struct drm_file *file_priv);
1308 extern int drm_authmagic(struct drm_device *dev, void *data,
1309 struct drm_file *file_priv);
1311 /* Cache management (drm_cache.c) */
1312 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1314 /* Locking IOCTL support (drm_lock.h) */
1315 extern int drm_lock(struct drm_device *dev, void *data,
1316 struct drm_file *file_priv);
1317 extern int drm_unlock(struct drm_device *dev, void *data,
1318 struct drm_file *file_priv);
1319 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1320 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1321 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1324 * These are exported to drivers so that they can implement fencing using
1325 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1328 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1330 /* Buffer management support (drm_bufs.h) */
1331 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1332 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1333 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1334 unsigned int size, enum drm_map_type type,
1335 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1336 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1337 struct drm_file *file_priv);
1338 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1339 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1340 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1341 struct drm_file *file_priv);
1342 extern int drm_addbufs(struct drm_device *dev, void *data,
1343 struct drm_file *file_priv);
1344 extern int drm_infobufs(struct drm_device *dev, void *data,
1345 struct drm_file *file_priv);
1346 extern int drm_markbufs(struct drm_device *dev, void *data,
1347 struct drm_file *file_priv);
1348 extern int drm_freebufs(struct drm_device *dev, void *data,
1349 struct drm_file *file_priv);
1350 extern int drm_mapbufs(struct drm_device *dev, void *data,
1351 struct drm_file *file_priv);
1352 extern int drm_order(unsigned long size);
1354 /* DMA support (drm_dma.h) */
1355 extern int drm_dma_setup(struct drm_device *dev);
1356 extern void drm_dma_takedown(struct drm_device *dev);
1357 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1358 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1359 struct drm_file *filp);
1361 /* IRQ support (drm_irq.h) */
1362 extern int drm_control(struct drm_device *dev, void *data,
1363 struct drm_file *file_priv);
1364 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
1365 extern int drm_irq_install(struct drm_device *dev);
1366 extern int drm_irq_uninstall(struct drm_device *dev);
1367 extern void drm_driver_irq_preinstall(struct drm_device *dev);
1368 extern void drm_driver_irq_postinstall(struct drm_device *dev);
1369 extern void drm_driver_irq_uninstall(struct drm_device *dev);
1371 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1372 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1373 struct drm_file *filp);
1374 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1375 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1376 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1377 struct timeval *vblanktime);
1378 extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1379 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1380 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1381 extern void drm_vblank_off(struct drm_device *dev, int crtc);
1382 extern void drm_vblank_cleanup(struct drm_device *dev);
1383 extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1384 struct timeval *tvblank, unsigned flags);
1385 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1386 int crtc, int *max_error,
1387 struct timeval *vblank_time,
1389 struct drm_crtc *refcrtc);
1390 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
1392 /* Modesetting support */
1393 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1394 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1395 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1396 struct drm_file *file_priv);
1398 /* AGP/GART support (drm_agpsupport.h) */
1399 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1400 extern int drm_agp_acquire(struct drm_device *dev);
1401 extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1402 struct drm_file *file_priv);
1403 extern int drm_agp_release(struct drm_device *dev);
1404 extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1405 struct drm_file *file_priv);
1406 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1407 extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1408 struct drm_file *file_priv);
1409 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1410 extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1411 struct drm_file *file_priv);
1412 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1413 extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1414 struct drm_file *file_priv);
1415 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1416 extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1417 struct drm_file *file_priv);
1418 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1419 extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1420 struct drm_file *file_priv);
1421 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1422 extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1423 struct drm_file *file_priv);
1425 /* Stub support (drm_stub.h) */
1426 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1427 struct drm_file *file_priv);
1428 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1429 struct drm_file *file_priv);
1430 struct drm_master *drm_master_create(struct drm_minor *minor);
1431 extern struct drm_master *drm_master_get(struct drm_master *master);
1432 extern void drm_master_put(struct drm_master **master);
1434 extern void drm_put_dev(struct drm_device *dev);
1435 extern int drm_put_minor(struct drm_minor **minor);
1436 extern unsigned int drm_debug;
1438 extern unsigned int drm_vblank_offdelay;
1439 extern unsigned int drm_timestamp_precision;
1441 extern struct class *drm_class;
1442 extern struct proc_dir_entry *drm_proc_root;
1443 extern struct dentry *drm_debugfs_root;
1445 extern struct idr drm_minors_idr;
1447 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1449 /* Proc support (drm_proc.h) */
1450 extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1451 struct proc_dir_entry *root);
1452 extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1454 /* Debugfs support */
1455 #if defined(CONFIG_DEBUG_FS)
1456 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1457 struct dentry *root);
1458 extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1459 struct dentry *root, struct drm_minor *minor);
1460 extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1461 struct drm_minor *minor);
1462 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1465 /* Info file support */
1466 extern int drm_name_info(struct seq_file *m, void *data);
1467 extern int drm_vm_info(struct seq_file *m, void *data);
1468 extern int drm_queues_info(struct seq_file *m, void *data);
1469 extern int drm_bufs_info(struct seq_file *m, void *data);
1470 extern int drm_vblank_info(struct seq_file *m, void *data);
1471 extern int drm_clients_info(struct seq_file *m, void* data);
1472 extern int drm_gem_name_info(struct seq_file *m, void *data);
1475 extern int drm_vma_info(struct seq_file *m, void *data);
1478 /* Scatter Gather Support (drm_scatter.h) */
1479 extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1480 extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1481 struct drm_file *file_priv);
1482 extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1483 extern int drm_sg_free(struct drm_device *dev, void *data,
1484 struct drm_file *file_priv);
1486 /* ATI PCIGART support (ati_pcigart.h) */
1487 extern int drm_ati_pcigart_init(struct drm_device *dev,
1488 struct drm_ati_pcigart_info * gart_info);
1489 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1490 struct drm_ati_pcigart_info * gart_info);
1492 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1494 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1495 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1497 /* sysfs support (drm_sysfs.c) */
1498 struct drm_sysfs_class;
1499 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1500 extern void drm_sysfs_destroy(void);
1501 extern int drm_sysfs_device_add(struct drm_minor *minor);
1502 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1503 extern void drm_sysfs_device_remove(struct drm_minor *minor);
1504 extern char *drm_get_connector_status_name(enum drm_connector_status status);
1505 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1506 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1508 /* Graphics Execution Manager library functions (drm_gem.c) */
1509 int drm_gem_init(struct drm_device *dev);
1510 void drm_gem_destroy(struct drm_device *dev);
1511 void drm_gem_object_release(struct drm_gem_object *obj);
1512 void drm_gem_object_free(struct kref *kref);
1513 struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1515 int drm_gem_object_init(struct drm_device *dev,
1516 struct drm_gem_object *obj, size_t size);
1517 void drm_gem_object_handle_free(struct drm_gem_object *obj);
1518 void drm_gem_vm_open(struct vm_area_struct *vma);
1519 void drm_gem_vm_close(struct vm_area_struct *vma);
1520 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1522 #include "drm_global.h"
1525 drm_gem_object_reference(struct drm_gem_object *obj)
1527 kref_get(&obj->refcount);
1531 drm_gem_object_unreference(struct drm_gem_object *obj)
1534 kref_put(&obj->refcount, drm_gem_object_free);
1538 drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1541 struct drm_device *dev = obj->dev;
1542 mutex_lock(&dev->struct_mutex);
1543 kref_put(&obj->refcount, drm_gem_object_free);
1544 mutex_unlock(&dev->struct_mutex);
1548 int drm_gem_handle_create(struct drm_file *file_priv,
1549 struct drm_gem_object *obj,
1551 int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
1554 drm_gem_object_handle_reference(struct drm_gem_object *obj)
1556 drm_gem_object_reference(obj);
1557 atomic_inc(&obj->handle_count);
1561 drm_gem_object_handle_unreference(struct drm_gem_object *obj)
1566 if (atomic_read(&obj->handle_count) == 0)
1569 * Must bump handle count first as this may be the last
1570 * ref, in which case the object would disappear before we
1571 * checked for a name
1573 if (atomic_dec_and_test(&obj->handle_count))
1574 drm_gem_object_handle_free(obj);
1575 drm_gem_object_unreference(obj);
1579 drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj)
1584 if (atomic_read(&obj->handle_count) == 0)
1588 * Must bump handle count first as this may be the last
1589 * ref, in which case the object would disappear before we
1590 * checked for a name
1593 if (atomic_dec_and_test(&obj->handle_count))
1594 drm_gem_object_handle_free(obj);
1595 drm_gem_object_unreference_unlocked(obj);
1598 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1599 struct drm_file *filp,
1601 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1602 struct drm_file *file_priv);
1603 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1604 struct drm_file *file_priv);
1605 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1606 struct drm_file *file_priv);
1607 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1608 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1610 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1611 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1612 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1614 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1617 struct drm_map_list *_entry;
1618 list_for_each_entry(_entry, &dev->maplist, head)
1619 if (_entry->user_token == token)
1624 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1628 #include "drm_mem_util.h"
1630 extern int drm_fill_in_dev(struct drm_device *dev,
1631 const struct pci_device_id *ent,
1632 struct drm_driver *driver);
1633 int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
1637 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1639 if (dev->driver->device_is_agp != NULL) {
1640 int err = (*dev->driver->device_is_agp) (dev);
1647 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1651 static __inline__ int drm_pci_device_is_pcie(struct drm_device *dev)
1653 return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1657 extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1658 extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1659 extern int drm_get_pci_dev(struct pci_dev *pdev,
1660 const struct pci_device_id *ent,
1661 struct drm_driver *driver);
1664 /* platform section */
1665 extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1666 extern void drm_platform_exit(struct drm_driver *driver, struct platform_device *platform_device);
1668 extern int drm_get_platform_dev(struct platform_device *pdev,
1669 struct drm_driver *driver);
1671 #endif /* __KERNEL__ */