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>
77 #include <linux/idr.h>
79 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
80 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
87 #include "drm_os_linux.h"
88 #include "drm_hashtab.h"
91 #define DRM_UT_CORE 0x01
92 #define DRM_UT_DRIVER 0x02
93 #define DRM_UT_KMS 0x04
95 * Three debug levels are defined.
96 * drm_core, drm_driver, drm_kms
97 * drm_core level can be used in the generic drm code. For example:
98 * drm_ioctl, drm_mm, drm_memory
99 * The macro definition of DRM_DEBUG is used.
100 * DRM_DEBUG(fmt, args...)
101 * The debug info by using the DRM_DEBUG can be obtained by adding
102 * the boot option of "drm.debug=1".
104 * drm_driver level can be used in the specific drm driver. It is used
105 * to add the debug info related with the drm driver. For example:
106 * i915_drv, i915_dma, i915_gem, radeon_drv,
107 * The macro definition of DRM_DEBUG_DRIVER can be used.
108 * DRM_DEBUG_DRIVER(fmt, args...)
109 * The debug info by using the DRM_DEBUG_DRIVER can be obtained by
110 * adding the boot option of "drm.debug=0x02"
112 * drm_kms level can be used in the KMS code related with specific drm driver.
113 * It is used to add the debug info related with KMS mode. For example:
114 * the connector/crtc ,
115 * The macro definition of DRM_DEBUG_KMS can be used.
116 * DRM_DEBUG_KMS(fmt, args...)
117 * The debug info by using the DRM_DEBUG_KMS can be obtained by
118 * adding the boot option of "drm.debug=0x04"
120 * If we add the boot option of "drm.debug=0x06", we can get the debug info by
121 * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
122 * If we add the boot option of "drm.debug=0x05", we can get the debug info by
123 * using the DRM_DEBUG_KMS and DRM_DEBUG.
126 extern __printf(4, 5)
127 void drm_ut_debug_printk(unsigned int request_level,
129 const char *function_name,
130 const char *format, ...);
131 extern __printf(2, 3)
132 int drm_err(const char *func, const char *format, ...);
134 /***********************************************************************/
135 /** \name DRM template customization defaults */
138 /* driver capabilities and requirements mask */
139 #define DRIVER_USE_AGP 0x1
140 #define DRIVER_REQUIRE_AGP 0x2
141 #define DRIVER_USE_MTRR 0x4
142 #define DRIVER_PCI_DMA 0x8
143 #define DRIVER_SG 0x10
144 #define DRIVER_HAVE_DMA 0x20
145 #define DRIVER_HAVE_IRQ 0x40
146 #define DRIVER_IRQ_SHARED 0x80
147 #define DRIVER_IRQ_VBL 0x100
148 #define DRIVER_DMA_QUEUE 0x200
149 #define DRIVER_FB_DMA 0x400
150 #define DRIVER_IRQ_VBL2 0x800
151 #define DRIVER_GEM 0x1000
152 #define DRIVER_MODESET 0x2000
154 #define DRIVER_BUS_PCI 0x1
155 #define DRIVER_BUS_PLATFORM 0x2
156 #define DRIVER_BUS_USB 0x3
158 /***********************************************************************/
159 /** \name Begin the DRM... */
162 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
163 also include looping detection. */
165 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
166 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
167 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
168 #define DRM_LOOPING_LIMIT 5000000
169 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
170 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
172 #define DRM_FLAG_DEBUG 0x01
174 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
175 #define DRM_MAP_HASH_OFFSET 0x10000000
179 /***********************************************************************/
180 /** \name Macros to make printk easier */
186 * \param fmt printf() like format string.
187 * \param arg arguments
189 #define DRM_ERROR(fmt, ...) \
190 drm_err(__func__, fmt, ##__VA_ARGS__)
192 #define DRM_INFO(fmt, ...) \
193 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
198 * \param fmt printf() like format string.
199 * \param arg arguments
202 #define DRM_DEBUG(fmt, args...) \
204 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
205 __func__, fmt, ##args); \
208 #define DRM_DEBUG_DRIVER(fmt, args...) \
210 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
211 __func__, fmt, ##args); \
213 #define DRM_DEBUG_KMS(fmt, args...) \
215 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
216 __func__, fmt, ##args); \
218 #define DRM_LOG(fmt, args...) \
220 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
221 NULL, fmt, ##args); \
223 #define DRM_LOG_KMS(fmt, args...) \
225 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
226 NULL, fmt, ##args); \
228 #define DRM_LOG_MODE(fmt, args...) \
230 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
231 NULL, fmt, ##args); \
233 #define DRM_LOG_DRIVER(fmt, args...) \
235 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
236 NULL, fmt, ##args); \
239 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
240 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
241 #define DRM_DEBUG(fmt, arg...) do { } while (0)
242 #define DRM_LOG(fmt, arg...) do { } while (0)
243 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
244 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
245 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
251 /***********************************************************************/
252 /** \name Internal types and structures */
255 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
257 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
258 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
260 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
263 * Test that the hardware lock is held by the caller, returning otherwise.
265 * \param dev DRM device.
266 * \param filp file pointer of the caller.
268 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
270 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
271 _file_priv->master->lock.file_priv != _file_priv) { \
272 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
273 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
274 _file_priv->master->lock.file_priv, _file_priv); \
280 * Ioctl function type.
282 * \param inode device inode.
283 * \param file_priv DRM file private pointer.
284 * \param cmd command.
285 * \param arg argument.
287 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
288 struct drm_file *file_priv);
290 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
293 #define DRM_IOCTL_NR(n) _IOC_NR(n)
294 #define DRM_MAJOR 226
297 #define DRM_MASTER 0x2
298 #define DRM_ROOT_ONLY 0x4
299 #define DRM_CONTROL_ALLOW 0x8
300 #define DRM_UNLOCKED 0x10
302 struct drm_ioctl_desc {
306 unsigned int cmd_drv;
310 * Creates a driver or general drm_ioctl_desc array entry for the given
311 * ioctl, for use by drm_ioctl().
314 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
315 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl}
317 struct drm_magic_entry {
318 struct list_head head;
319 struct drm_hash_item hash_item;
320 struct drm_file *priv;
323 struct drm_vma_entry {
324 struct list_head head;
325 struct vm_area_struct *vma;
333 int idx; /**< Index into master buflist */
334 int total; /**< Buffer size */
335 int order; /**< log-base-2(total) */
336 int used; /**< Amount of buffer in use (for DMA) */
337 unsigned long offset; /**< Byte offset (used internally) */
338 void *address; /**< Address of buffer */
339 unsigned long bus_address; /**< Bus address of buffer */
340 struct drm_buf *next; /**< Kernel-only: used for free list */
341 __volatile__ int waiting; /**< On kernel DMA queue */
342 __volatile__ int pending; /**< On hardware DMA queue */
343 wait_queue_head_t dma_wait; /**< Processes waiting */
344 struct drm_file *file_priv; /**< Private of holding file descr */
345 int context; /**< Kernel queue for this buffer */
346 int while_locked; /**< Dispatch this buffer while locked */
354 } list; /**< Which list we're on */
356 int dev_priv_size; /**< Size of buffer private storage */
357 void *dev_private; /**< Per-buffer private storage */
360 /** bufs is one longer than it has to be */
361 struct drm_waitlist {
362 int count; /**< Number of possible buffers */
363 struct drm_buf **bufs; /**< List of pointers to buffers */
364 struct drm_buf **rp; /**< Read pointer */
365 struct drm_buf **wp; /**< Write pointer */
366 struct drm_buf **end; /**< End pointer */
367 spinlock_t read_lock;
368 spinlock_t write_lock;
371 struct drm_freelist {
372 int initialized; /**< Freelist in use */
373 atomic_t count; /**< Number of free buffers */
374 struct drm_buf *next; /**< End pointer */
376 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
377 int low_mark; /**< Low water mark */
378 int high_mark; /**< High water mark */
379 atomic_t wfh; /**< If waiting for high mark */
383 typedef struct drm_dma_handle {
390 * Buffer entry. There is one of this for each buffer size order.
392 struct drm_buf_entry {
393 int buf_size; /**< size */
394 int buf_count; /**< number of buffers */
395 struct drm_buf *buflist; /**< buffer list */
398 struct drm_dma_handle **seglist;
400 struct drm_freelist freelist;
403 /* Event queued up for userspace to read */
404 struct drm_pending_event {
405 struct drm_event *event;
406 struct list_head link;
407 struct drm_file *file_priv;
408 pid_t pid; /* pid of requester, no guarantee it's valid by the time
409 we deliver the event, for tracing only */
410 void (*destroy)(struct drm_pending_event *event);
413 /** File private data */
419 unsigned long ioctl_count;
420 struct list_head lhead;
421 struct drm_minor *minor;
422 unsigned long lock_count;
424 /** Mapping of mm object handles to object pointers. */
425 struct idr object_idr;
426 /** Lock for synchronization of access to object_idr. */
427 spinlock_t table_lock;
432 int is_master; /* this file private is a master for a minor */
433 struct drm_master *master; /* master this node is currently associated with
434 N.B. not always minor->master */
435 struct list_head fbs;
437 wait_queue_head_t event_wait;
438 struct list_head event_list;
444 atomic_t use_count; /**< Outstanding uses (+1) */
445 atomic_t finalization; /**< Finalization in progress */
446 atomic_t block_count; /**< Count of processes waiting */
447 atomic_t block_read; /**< Queue blocked for reads */
448 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
449 atomic_t block_write; /**< Queue blocked for writes */
450 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
451 atomic_t total_queued; /**< Total queued statistic */
452 atomic_t total_flushed; /**< Total flushes statistic */
453 atomic_t total_locks; /**< Total locks statistics */
454 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
455 struct drm_waitlist waitlist; /**< Pending buffers */
456 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
462 struct drm_lock_data {
463 struct drm_hw_lock *hw_lock; /**< Hardware lock */
464 /** Private of lock holder's file (NULL=kernel) */
465 struct drm_file *file_priv;
466 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
467 unsigned long lock_time; /**< Time of last lock in jiffies */
469 uint32_t kernel_waiters;
470 uint32_t user_waiters;
477 struct drm_device_dma {
479 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
480 int buf_count; /**< total number of buffers */
481 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
483 int page_count; /**< number of pages */
484 unsigned long *pagelist; /**< page list */
485 unsigned long byte_count;
487 _DRM_DMA_USE_AGP = 0x01,
488 _DRM_DMA_USE_SG = 0x02,
489 _DRM_DMA_USE_FB = 0x04,
490 _DRM_DMA_USE_PCI_RO = 0x08
496 * AGP memory entry. Stored as a doubly linked list.
499 unsigned long handle; /**< handle */
501 unsigned long bound; /**< address */
503 struct list_head head;
509 * \sa drm_agp_init() and drm_device::agp.
511 struct drm_agp_head {
512 DRM_AGP_KERN agp_info; /**< AGP device information */
513 struct list_head memory;
514 unsigned long mode; /**< AGP mode */
515 struct agp_bridge_data *bridge;
516 int enabled; /**< whether the AGP bus as been enabled */
517 int acquired; /**< whether the AGP device has been acquired */
520 int cant_use_aperture;
521 unsigned long page_mask;
525 * Scatter-gather memory.
528 unsigned long handle;
531 struct page **pagelist;
537 struct drm_hw_lock *lock;
542 * Kernel side of a mapping
544 struct drm_local_map {
545 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
546 unsigned long size; /**< Requested physical size (bytes) */
547 enum drm_map_type type; /**< Type of memory to map */
548 enum drm_map_flags flags; /**< Flags */
549 void *handle; /**< User-space: "Handle" to pass to mmap() */
550 /**< Kernel-space: kernel-virtual address */
551 int mtrr; /**< MTRR slot used */
554 typedef struct drm_local_map drm_local_map_t;
559 struct drm_map_list {
560 struct list_head head; /**< list head */
561 struct drm_hash_item hash;
562 struct drm_local_map *map; /**< mapping */
564 struct drm_master *master;
565 struct drm_mm_node *file_offset_node; /**< fake offset */
569 * Context handle list
571 struct drm_ctx_list {
572 struct list_head head; /**< list head */
573 drm_context_t handle; /**< context handle */
574 struct drm_file *tag; /**< associated fd private data */
577 /* location of GART table */
578 #define DRM_ATI_GART_MAIN 1
579 #define DRM_ATI_GART_FB 2
581 #define DRM_ATI_GART_PCI 1
582 #define DRM_ATI_GART_PCIE 2
583 #define DRM_ATI_GART_IGP 3
585 struct drm_ati_pcigart_info {
586 int gart_table_location;
590 dma_addr_t table_mask;
591 struct drm_dma_handle *table_handle;
592 struct drm_local_map mapping;
597 * GEM specific mm private for tracking GEM objects
600 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */
601 struct drm_open_hash offset_hash; /**< User token hash table for maps */
605 * This structure defines the drm_mm memory object, which will be used by the
606 * DRM for its buffer objects.
608 struct drm_gem_object {
609 /** Reference count of this object */
610 struct kref refcount;
612 /** Handle count of this object. Each handle also holds a reference */
613 atomic_t handle_count; /* number of handles on this object */
615 /** Related drm device */
616 struct drm_device *dev;
618 /** File representing the shmem storage */
621 /* Mapping info for this object */
622 struct drm_map_list map_list;
625 * Size of the object, in bytes. Immutable over the object's
631 * Global name for this object, starts at 1. 0 means unnamed.
632 * Access is covered by the object_name_lock in the related drm_device
637 * Memory domains. These monitor which caches contain read/write data
638 * related to the object. When transitioning from one set of domains
639 * to another, the driver is called to ensure that caches are suitably
640 * flushed and invalidated
642 uint32_t read_domains;
643 uint32_t write_domain;
646 * While validating an exec operation, the
647 * new read/write domain values are computed here.
648 * They will be transferred to the above values
649 * at the point that any cache flushing occurs
651 uint32_t pending_read_domains;
652 uint32_t pending_write_domain;
654 void *driver_private;
657 #include "drm_crtc.h"
659 /* per-master structure */
662 struct kref refcount; /* refcount for this master */
664 struct list_head head; /**< each minor contains a list of masters */
665 struct drm_minor *minor; /**< link back to minor we are a master for */
667 char *unique; /**< Unique identifier: e.g., busid */
668 int unique_len; /**< Length of unique field */
669 int unique_size; /**< amount allocated */
671 int blocked; /**< Blocked due to VC switch? */
673 /** \name Authentication */
675 struct drm_open_hash magiclist;
676 struct list_head magicfree;
679 struct drm_lock_data lock; /**< Information on hardware lock */
681 void *driver_priv; /**< Private structure for driver to use */
684 /* Size of ringbuffer for vblank timestamps. Just double-buffer
685 * in initial implementation.
687 #define DRM_VBLANKTIME_RBSIZE 2
689 /* Flags and return codes for get_vblank_timestamp() driver function. */
690 #define DRM_CALLED_FROM_VBLIRQ 1
691 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
692 #define DRM_VBLANKTIME_INVBL (1 << 1)
694 /* get_scanout_position() return flags */
695 #define DRM_SCANOUTPOS_VALID (1 << 0)
696 #define DRM_SCANOUTPOS_INVBL (1 << 1)
697 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
701 int (*get_irq)(struct drm_device *dev);
702 const char *(*get_name)(struct drm_device *dev);
703 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
704 int (*set_unique)(struct drm_device *dev, struct drm_master *master,
705 struct drm_unique *unique);
706 int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
707 /* hooks that are for PCI */
708 int (*agp_init)(struct drm_device *dev);
713 * DRM driver structure. This structure represent the common code for
714 * a family of cards. There will one drm_device for each card present
718 int (*load) (struct drm_device *, unsigned long flags);
719 int (*firstopen) (struct drm_device *);
720 int (*open) (struct drm_device *, struct drm_file *);
721 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
722 void (*postclose) (struct drm_device *, struct drm_file *);
723 void (*lastclose) (struct drm_device *);
724 int (*unload) (struct drm_device *);
725 int (*suspend) (struct drm_device *, pm_message_t state);
726 int (*resume) (struct drm_device *);
727 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
728 int (*dma_quiescent) (struct drm_device *);
729 int (*context_dtor) (struct drm_device *dev, int context);
732 * get_vblank_counter - get raw hardware vblank counter
734 * @crtc: counter to fetch
736 * Driver callback for fetching a raw hardware vblank counter
737 * for @crtc. If a device doesn't have a hardware counter, the
738 * driver can simply return the value of drm_vblank_count and
739 * make the enable_vblank() and disable_vblank() hooks into no-ops,
740 * leaving interrupts enabled at all times.
742 * Wraparound handling and loss of events due to modesetting is dealt
743 * with in the DRM core code.
746 * Raw vblank counter value.
748 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
751 * enable_vblank - enable vblank interrupt events
753 * @crtc: which irq to enable
755 * Enable vblank interrupts for @crtc. If the device doesn't have
756 * a hardware vblank counter, this routine should be a no-op, since
757 * interrupts will have to stay on to keep the count accurate.
760 * Zero on success, appropriate errno if the given @crtc's vblank
761 * interrupt cannot be enabled.
763 int (*enable_vblank) (struct drm_device *dev, int crtc);
766 * disable_vblank - disable vblank interrupt events
768 * @crtc: which irq to enable
770 * Disable vblank interrupts for @crtc. If the device doesn't have
771 * a hardware vblank counter, this routine should be a no-op, since
772 * interrupts will have to stay on to keep the count accurate.
774 void (*disable_vblank) (struct drm_device *dev, int crtc);
777 * Called by \c drm_device_is_agp. Typically used to determine if a
778 * card is really attached to AGP or not.
780 * \param dev DRM device handle
783 * One of three values is returned depending on whether or not the
784 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
785 * (return of 1), or may or may not be AGP (return of 2).
787 int (*device_is_agp) (struct drm_device *dev);
790 * Called by vblank timestamping code.
792 * Return the current display scanout position from a crtc.
794 * \param dev DRM device.
795 * \param crtc Id of the crtc to query.
796 * \param *vpos Target location for current vertical scanout position.
797 * \param *hpos Target location for current horizontal scanout position.
799 * Returns vpos as a positive number while in active scanout area.
800 * Returns vpos as a negative number inside vblank, counting the number
801 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
802 * until start of active scanout / end of vblank."
804 * \return Flags, or'ed together as follows:
806 * DRM_SCANOUTPOS_VALID = Query successful.
807 * DRM_SCANOUTPOS_INVBL = Inside vblank.
808 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
809 * this flag means that returned position may be offset by a constant
810 * but unknown small number of scanlines wrt. real scanout position.
813 int (*get_scanout_position) (struct drm_device *dev, int crtc,
814 int *vpos, int *hpos);
817 * Called by \c drm_get_last_vbltimestamp. Should return a precise
818 * timestamp when the most recent VBLANK interval ended or will end.
820 * Specifically, the timestamp in @vblank_time should correspond as
821 * closely as possible to the time when the first video scanline of
822 * the video frame after the end of VBLANK will start scanning out,
823 * the time immmediately after end of the VBLANK interval. If the
824 * @crtc is currently inside VBLANK, this will be a time in the future.
825 * If the @crtc is currently scanning out a frame, this will be the
826 * past start time of the current scanout. This is meant to adhere
827 * to the OpenML OML_sync_control extension specification.
829 * \param dev dev DRM device handle.
830 * \param crtc crtc for which timestamp should be returned.
831 * \param *max_error Maximum allowable timestamp error in nanoseconds.
832 * Implementation should strive to provide timestamp
833 * with an error of at most *max_error nanoseconds.
834 * Returns true upper bound on error for timestamp.
835 * \param *vblank_time Target location for returned vblank timestamp.
836 * \param flags 0 = Defaults, no special treatment needed.
837 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
838 * irq handler. Some drivers need to apply some workarounds
839 * for gpu-specific vblank irq quirks if flag is set.
842 * Zero if timestamping isn't supported in current display mode or a
843 * negative number on failure. A positive status code on success,
844 * which describes how the vblank_time timestamp was computed.
846 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
848 struct timeval *vblank_time,
851 /* these have to be filled in */
853 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
854 void (*irq_preinstall) (struct drm_device *dev);
855 int (*irq_postinstall) (struct drm_device *dev);
856 void (*irq_uninstall) (struct drm_device *dev);
857 void (*reclaim_buffers) (struct drm_device *dev,
858 struct drm_file * file_priv);
859 void (*reclaim_buffers_locked) (struct drm_device *dev,
860 struct drm_file *file_priv);
861 void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
862 struct drm_file *file_priv);
863 void (*set_version) (struct drm_device *dev,
864 struct drm_set_version *sv);
866 /* Master routines */
867 int (*master_create)(struct drm_device *dev, struct drm_master *master);
868 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
870 * master_set is called whenever the minor master is set.
871 * master_drop is called whenever the minor master is dropped.
874 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
876 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
879 int (*debugfs_init)(struct drm_minor *minor);
880 void (*debugfs_cleanup)(struct drm_minor *minor);
883 * Driver-specific constructor for drm_gem_objects, to set up
884 * obj->driver_private.
886 * Returns 0 on success.
888 int (*gem_init_object) (struct drm_gem_object *obj);
889 void (*gem_free_object) (struct drm_gem_object *obj);
890 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
891 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
893 /* vga arb irq handler */
894 void (*vgaarb_irq)(struct drm_device *dev, bool state);
896 /* dumb alloc support */
897 int (*dumb_create)(struct drm_file *file_priv,
898 struct drm_device *dev,
899 struct drm_mode_create_dumb *args);
900 int (*dumb_map_offset)(struct drm_file *file_priv,
901 struct drm_device *dev, uint32_t handle,
903 int (*dumb_destroy)(struct drm_file *file_priv,
904 struct drm_device *dev,
907 /* Driver private ops for this object */
908 struct vm_operations_struct *gem_vm_ops;
919 struct drm_ioctl_desc *ioctls;
921 struct file_operations fops;
923 struct pci_driver *pci;
924 struct platform_device *platform_device;
925 struct usb_driver *usb;
929 /* List of devices hanging off this driver */
930 struct list_head device_list;
933 #define DRM_MINOR_UNASSIGNED 0
934 #define DRM_MINOR_LEGACY 1
935 #define DRM_MINOR_CONTROL 2
936 #define DRM_MINOR_RENDER 3
940 * debugfs node list. This structure represents a debugfs file to
941 * be created by the drm core
943 struct drm_debugfs_list {
944 const char *name; /** file name */
945 int (*show)(struct seq_file*, void*); /** show callback */
946 u32 driver_features; /**< Required driver features for this entry */
950 * debugfs node structure. This structure represents a debugfs file.
952 struct drm_debugfs_node {
953 struct list_head list;
954 struct drm_minor *minor;
955 struct drm_debugfs_list *debugfs_ent;
960 * Info file list entry. This structure represents a debugfs or proc file to
961 * be created by the drm core
963 struct drm_info_list {
964 const char *name; /** file name */
965 int (*show)(struct seq_file*, void*); /** show callback */
966 u32 driver_features; /**< Required driver features for this entry */
971 * debugfs node structure. This structure represents a debugfs file.
973 struct drm_info_node {
974 struct list_head list;
975 struct drm_minor *minor;
976 struct drm_info_list *info_ent;
981 * DRM minor structure. This structure represents a drm minor number.
984 int index; /**< Minor device number */
985 int type; /**< Control or render */
986 dev_t device; /**< Device number for mknod */
987 struct device kdev; /**< Linux device */
988 struct drm_device *dev;
990 struct proc_dir_entry *proc_root; /**< proc directory entry */
991 struct drm_info_node proc_nodes;
992 struct dentry *debugfs_root;
994 struct list_head debugfs_list;
995 struct mutex debugfs_lock; /* Protects debugfs_list. */
997 struct drm_master *master; /* currently active master for this node */
998 struct list_head master_list;
999 struct drm_mode_group mode_group;
1002 /* mode specified on the command line */
1003 struct drm_cmdline_mode {
1005 bool refresh_specified;
1014 enum drm_connector_force force;
1018 struct drm_pending_vblank_event {
1019 struct drm_pending_event base;
1021 struct drm_event_vblank event;
1025 * DRM device structure. This structure represent a complete card that
1026 * may contain multiple heads.
1029 struct list_head driver_item; /**< list of devices per driver */
1030 char *devname; /**< For /proc/interrupts */
1031 int if_version; /**< Highest interface version set */
1035 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1036 struct mutex struct_mutex; /**< For others */
1039 /** \name Usage Counters */
1041 int open_count; /**< Outstanding files open */
1042 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
1043 atomic_t vma_count; /**< Outstanding vma areas open */
1044 int buf_use; /**< Buffers in use -- cannot alloc */
1045 atomic_t buf_alloc; /**< Buffer allocation in progress */
1048 /** \name Performance counters */
1050 unsigned long counters;
1051 enum drm_stat_type types[15];
1052 atomic_t counts[15];
1055 struct list_head filelist;
1057 /** \name Memory management */
1059 struct list_head maplist; /**< Linked list of regions */
1060 int map_count; /**< Number of mappable regions */
1061 struct drm_open_hash map_hash; /**< User token hash table for maps */
1063 /** \name Context handle management */
1065 struct list_head ctxlist; /**< Linked list of context handles */
1066 int ctx_count; /**< Number of context handles */
1067 struct mutex ctxlist_mutex; /**< For ctxlist */
1071 struct list_head vmalist; /**< List of vmas (for debugging) */
1075 /** \name DMA queues (contexts) */
1077 int queue_count; /**< Number of active DMA queues */
1078 int queue_reserved; /**< Number of reserved DMA queues */
1079 int queue_slots; /**< Actual length of queuelist */
1080 struct drm_queue **queuelist; /**< Vector of pointers to DMA queues */
1081 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1084 /** \name Context support */
1086 int irq_enabled; /**< True if irq handler is enabled */
1087 __volatile__ long context_flag; /**< Context swapping flag */
1088 __volatile__ long interrupt_flag; /**< Interruption handler flag */
1089 __volatile__ long dma_flag; /**< DMA dispatch flag */
1090 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
1091 int last_checked; /**< Last context checked for DMA */
1092 int last_context; /**< Last current context */
1093 unsigned long last_switch; /**< jiffies at last context switch */
1096 struct work_struct work;
1097 /** \name VBLANK IRQ support */
1101 * At load time, disabling the vblank interrupt won't be allowed since
1102 * old clients may not call the modeset ioctl and therefore misbehave.
1103 * Once the modeset ioctl *has* been called though, we can safely
1104 * disable them when unused.
1106 int vblank_disable_allowed;
1108 wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */
1109 atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1110 struct timeval *_vblank_time; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1111 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1112 spinlock_t vbl_lock;
1113 atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */
1114 u32 *last_vblank; /* protected by dev->vbl_lock, used */
1115 /* for wraparound handling */
1116 int *vblank_enabled; /* so we don't call enable more than
1118 int *vblank_inmodeset; /* Display driver is setting mode */
1119 u32 *last_vblank_wait; /* Last vblank seqno waited per CRTC */
1120 struct timer_list vblank_disable_timer;
1122 u32 max_vblank_count; /**< size of vblank counter register */
1127 struct list_head vblank_event_list;
1128 spinlock_t event_lock;
1134 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
1135 wait_queue_head_t buf_readers; /**< Processes waiting to read */
1136 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
1138 struct drm_agp_head *agp; /**< AGP data */
1140 struct device *dev; /**< Device structure */
1141 struct pci_dev *pdev; /**< PCI device structure */
1142 int pci_vendor; /**< PCI vendor id */
1143 int pci_device; /**< PCI device id */
1145 struct pci_controller *hose;
1148 struct platform_device *platformdev; /**< Platform device struture */
1149 struct usb_device *usbdev;
1151 struct drm_sg_mem *sg; /**< Scatter gather memory */
1152 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1153 void *dev_private; /**< device private data */
1155 struct address_space *dev_mapping;
1156 struct drm_sigdata sigdata; /**< For block_all_signals */
1159 struct drm_driver *driver;
1160 struct drm_local_map *agp_buffer_map;
1161 unsigned int agp_buffer_token;
1162 struct drm_minor *control; /**< Control node for card */
1163 struct drm_minor *primary; /**< render type primary screen head */
1165 struct drm_mode_config mode_config; /**< Current mode config */
1167 /** \name GEM information */
1169 spinlock_t object_name_lock;
1170 struct idr object_name_idr;
1172 int switch_power_state;
1175 #define DRM_SWITCH_POWER_ON 0
1176 #define DRM_SWITCH_POWER_OFF 1
1177 #define DRM_SWITCH_POWER_CHANGING 2
1179 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1182 return ((dev->driver->driver_features & feature) ? 1 : 0);
1185 static inline int drm_dev_to_irq(struct drm_device *dev)
1187 return dev->driver->bus->get_irq(dev);
1192 static inline int drm_core_has_AGP(struct drm_device *dev)
1194 return drm_core_check_feature(dev, DRIVER_USE_AGP);
1197 #define drm_core_has_AGP(dev) (0)
1201 static inline int drm_core_has_MTRR(struct drm_device *dev)
1203 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1206 #define DRM_MTRR_WC MTRR_TYPE_WRCOMB
1208 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1211 return mtrr_add(offset, size, flags, 1);
1214 static inline int drm_mtrr_del(int handle, unsigned long offset,
1215 unsigned long size, unsigned int flags)
1217 return mtrr_del(handle, offset, size);
1221 #define drm_core_has_MTRR(dev) (0)
1223 #define DRM_MTRR_WC 0
1225 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1231 static inline int drm_mtrr_del(int handle, unsigned long offset,
1232 unsigned long size, unsigned int flags)
1238 /******************************************************************/
1239 /** \name Internal function definitions */
1242 /* Driver support (drm_drv.h) */
1243 extern long drm_ioctl(struct file *filp,
1244 unsigned int cmd, unsigned long arg);
1245 extern long drm_compat_ioctl(struct file *filp,
1246 unsigned int cmd, unsigned long arg);
1247 extern int drm_lastclose(struct drm_device *dev);
1249 /* Device support (drm_fops.h) */
1250 extern struct mutex drm_global_mutex;
1251 extern int drm_open(struct inode *inode, struct file *filp);
1252 extern int drm_stub_open(struct inode *inode, struct file *filp);
1253 extern int drm_fasync(int fd, struct file *filp, int on);
1254 extern ssize_t drm_read(struct file *filp, char __user *buffer,
1255 size_t count, loff_t *offset);
1256 extern int drm_release(struct inode *inode, struct file *filp);
1258 /* Mapping support (drm_vm.h) */
1259 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1260 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1261 extern void drm_vm_open_locked(struct vm_area_struct *vma);
1262 extern void drm_vm_close_locked(struct vm_area_struct *vma);
1263 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1265 /* Memory management support (drm_memory.h) */
1266 #include "drm_memory.h"
1267 extern void drm_mem_init(void);
1268 extern int drm_mem_info(char *buf, char **start, off_t offset,
1269 int request, int *eof, void *data);
1270 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
1272 extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
1273 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
1274 extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
1275 struct page **pages,
1276 unsigned long num_pages,
1277 uint32_t gtt_offset,
1279 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
1281 /* Misc. IOCTL support (drm_ioctl.h) */
1282 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1283 struct drm_file *file_priv);
1284 extern int drm_getunique(struct drm_device *dev, void *data,
1285 struct drm_file *file_priv);
1286 extern int drm_setunique(struct drm_device *dev, void *data,
1287 struct drm_file *file_priv);
1288 extern int drm_getmap(struct drm_device *dev, void *data,
1289 struct drm_file *file_priv);
1290 extern int drm_getclient(struct drm_device *dev, void *data,
1291 struct drm_file *file_priv);
1292 extern int drm_getstats(struct drm_device *dev, void *data,
1293 struct drm_file *file_priv);
1294 extern int drm_getcap(struct drm_device *dev, void *data,
1295 struct drm_file *file_priv);
1296 extern int drm_setversion(struct drm_device *dev, void *data,
1297 struct drm_file *file_priv);
1298 extern int drm_noop(struct drm_device *dev, void *data,
1299 struct drm_file *file_priv);
1301 /* Context IOCTL support (drm_context.h) */
1302 extern int drm_resctx(struct drm_device *dev, void *data,
1303 struct drm_file *file_priv);
1304 extern int drm_addctx(struct drm_device *dev, void *data,
1305 struct drm_file *file_priv);
1306 extern int drm_modctx(struct drm_device *dev, void *data,
1307 struct drm_file *file_priv);
1308 extern int drm_getctx(struct drm_device *dev, void *data,
1309 struct drm_file *file_priv);
1310 extern int drm_switchctx(struct drm_device *dev, void *data,
1311 struct drm_file *file_priv);
1312 extern int drm_newctx(struct drm_device *dev, void *data,
1313 struct drm_file *file_priv);
1314 extern int drm_rmctx(struct drm_device *dev, void *data,
1315 struct drm_file *file_priv);
1317 extern int drm_ctxbitmap_init(struct drm_device *dev);
1318 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1319 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1321 extern int drm_setsareactx(struct drm_device *dev, void *data,
1322 struct drm_file *file_priv);
1323 extern int drm_getsareactx(struct drm_device *dev, void *data,
1324 struct drm_file *file_priv);
1326 /* Authentication IOCTL support (drm_auth.h) */
1327 extern int drm_getmagic(struct drm_device *dev, void *data,
1328 struct drm_file *file_priv);
1329 extern int drm_authmagic(struct drm_device *dev, void *data,
1330 struct drm_file *file_priv);
1332 /* Cache management (drm_cache.c) */
1333 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1335 /* Locking IOCTL support (drm_lock.h) */
1336 extern int drm_lock(struct drm_device *dev, void *data,
1337 struct drm_file *file_priv);
1338 extern int drm_unlock(struct drm_device *dev, void *data,
1339 struct drm_file *file_priv);
1340 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1341 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1342 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1345 * These are exported to drivers so that they can implement fencing using
1346 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1349 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1351 /* Buffer management support (drm_bufs.h) */
1352 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1353 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1354 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1355 unsigned int size, enum drm_map_type type,
1356 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1357 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1358 struct drm_file *file_priv);
1359 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1360 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1361 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1362 struct drm_file *file_priv);
1363 extern int drm_addbufs(struct drm_device *dev, void *data,
1364 struct drm_file *file_priv);
1365 extern int drm_infobufs(struct drm_device *dev, void *data,
1366 struct drm_file *file_priv);
1367 extern int drm_markbufs(struct drm_device *dev, void *data,
1368 struct drm_file *file_priv);
1369 extern int drm_freebufs(struct drm_device *dev, void *data,
1370 struct drm_file *file_priv);
1371 extern int drm_mapbufs(struct drm_device *dev, void *data,
1372 struct drm_file *file_priv);
1373 extern int drm_order(unsigned long size);
1375 /* DMA support (drm_dma.h) */
1376 extern int drm_dma_setup(struct drm_device *dev);
1377 extern void drm_dma_takedown(struct drm_device *dev);
1378 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1379 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1380 struct drm_file *filp);
1382 /* IRQ support (drm_irq.h) */
1383 extern int drm_control(struct drm_device *dev, void *data,
1384 struct drm_file *file_priv);
1385 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
1386 extern int drm_irq_install(struct drm_device *dev);
1387 extern int drm_irq_uninstall(struct drm_device *dev);
1388 extern void drm_driver_irq_preinstall(struct drm_device *dev);
1389 extern void drm_driver_irq_postinstall(struct drm_device *dev);
1390 extern void drm_driver_irq_uninstall(struct drm_device *dev);
1392 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1393 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1394 struct drm_file *filp);
1395 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1396 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1397 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1398 struct timeval *vblanktime);
1399 extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1400 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1401 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1402 extern void drm_vblank_off(struct drm_device *dev, int crtc);
1403 extern void drm_vblank_cleanup(struct drm_device *dev);
1404 extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1405 struct timeval *tvblank, unsigned flags);
1406 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1407 int crtc, int *max_error,
1408 struct timeval *vblank_time,
1410 struct drm_crtc *refcrtc);
1411 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
1414 drm_mode_parse_command_line_for_connector(const char *mode_option,
1415 struct drm_connector *connector,
1416 struct drm_cmdline_mode *mode);
1418 extern struct drm_display_mode *
1419 drm_mode_create_from_cmdline_mode(struct drm_device *dev,
1420 struct drm_cmdline_mode *cmd);
1422 /* Modesetting support */
1423 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1424 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1425 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1426 struct drm_file *file_priv);
1428 /* AGP/GART support (drm_agpsupport.h) */
1429 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1430 extern int drm_agp_acquire(struct drm_device *dev);
1431 extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1432 struct drm_file *file_priv);
1433 extern int drm_agp_release(struct drm_device *dev);
1434 extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1435 struct drm_file *file_priv);
1436 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1437 extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1438 struct drm_file *file_priv);
1439 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1440 extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1441 struct drm_file *file_priv);
1442 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1443 extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1444 struct drm_file *file_priv);
1445 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1446 extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1447 struct drm_file *file_priv);
1448 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1449 extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1450 struct drm_file *file_priv);
1451 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1452 extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1453 struct drm_file *file_priv);
1455 /* Stub support (drm_stub.h) */
1456 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1457 struct drm_file *file_priv);
1458 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1459 struct drm_file *file_priv);
1460 struct drm_master *drm_master_create(struct drm_minor *minor);
1461 extern struct drm_master *drm_master_get(struct drm_master *master);
1462 extern void drm_master_put(struct drm_master **master);
1464 extern void drm_put_dev(struct drm_device *dev);
1465 extern int drm_put_minor(struct drm_minor **minor);
1466 extern unsigned int drm_debug;
1468 extern unsigned int drm_vblank_offdelay;
1469 extern unsigned int drm_timestamp_precision;
1471 extern struct class *drm_class;
1472 extern struct proc_dir_entry *drm_proc_root;
1473 extern struct dentry *drm_debugfs_root;
1475 extern struct idr drm_minors_idr;
1477 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1479 /* Proc support (drm_proc.h) */
1480 extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1481 struct proc_dir_entry *root);
1482 extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1484 /* Debugfs support */
1485 #if defined(CONFIG_DEBUG_FS)
1486 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1487 struct dentry *root);
1488 extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1489 struct dentry *root, struct drm_minor *minor);
1490 extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1491 struct drm_minor *minor);
1492 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1495 /* Info file support */
1496 extern int drm_name_info(struct seq_file *m, void *data);
1497 extern int drm_vm_info(struct seq_file *m, void *data);
1498 extern int drm_queues_info(struct seq_file *m, void *data);
1499 extern int drm_bufs_info(struct seq_file *m, void *data);
1500 extern int drm_vblank_info(struct seq_file *m, void *data);
1501 extern int drm_clients_info(struct seq_file *m, void* data);
1502 extern int drm_gem_name_info(struct seq_file *m, void *data);
1505 extern int drm_vma_info(struct seq_file *m, void *data);
1508 /* Scatter Gather Support (drm_scatter.h) */
1509 extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1510 extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1511 struct drm_file *file_priv);
1512 extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1513 extern int drm_sg_free(struct drm_device *dev, void *data,
1514 struct drm_file *file_priv);
1516 /* ATI PCIGART support (ati_pcigart.h) */
1517 extern int drm_ati_pcigart_init(struct drm_device *dev,
1518 struct drm_ati_pcigart_info * gart_info);
1519 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1520 struct drm_ati_pcigart_info * gart_info);
1522 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1524 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1525 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1527 /* sysfs support (drm_sysfs.c) */
1528 struct drm_sysfs_class;
1529 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1530 extern void drm_sysfs_destroy(void);
1531 extern int drm_sysfs_device_add(struct drm_minor *minor);
1532 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1533 extern void drm_sysfs_device_remove(struct drm_minor *minor);
1534 extern char *drm_get_connector_status_name(enum drm_connector_status status);
1535 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1536 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1538 /* Graphics Execution Manager library functions (drm_gem.c) */
1539 int drm_gem_init(struct drm_device *dev);
1540 void drm_gem_destroy(struct drm_device *dev);
1541 void drm_gem_object_release(struct drm_gem_object *obj);
1542 void drm_gem_object_free(struct kref *kref);
1543 struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1545 int drm_gem_object_init(struct drm_device *dev,
1546 struct drm_gem_object *obj, size_t size);
1547 int drm_gem_private_object_init(struct drm_device *dev,
1548 struct drm_gem_object *obj, size_t size);
1549 void drm_gem_object_handle_free(struct drm_gem_object *obj);
1550 void drm_gem_vm_open(struct vm_area_struct *vma);
1551 void drm_gem_vm_close(struct vm_area_struct *vma);
1552 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1554 #include "drm_global.h"
1557 drm_gem_object_reference(struct drm_gem_object *obj)
1559 kref_get(&obj->refcount);
1563 drm_gem_object_unreference(struct drm_gem_object *obj)
1566 kref_put(&obj->refcount, drm_gem_object_free);
1570 drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1573 struct drm_device *dev = obj->dev;
1574 mutex_lock(&dev->struct_mutex);
1575 kref_put(&obj->refcount, drm_gem_object_free);
1576 mutex_unlock(&dev->struct_mutex);
1580 int drm_gem_handle_create(struct drm_file *file_priv,
1581 struct drm_gem_object *obj,
1583 int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
1586 drm_gem_object_handle_reference(struct drm_gem_object *obj)
1588 drm_gem_object_reference(obj);
1589 atomic_inc(&obj->handle_count);
1593 drm_gem_object_handle_unreference(struct drm_gem_object *obj)
1598 if (atomic_read(&obj->handle_count) == 0)
1601 * Must bump handle count first as this may be the last
1602 * ref, in which case the object would disappear before we
1603 * checked for a name
1605 if (atomic_dec_and_test(&obj->handle_count))
1606 drm_gem_object_handle_free(obj);
1607 drm_gem_object_unreference(obj);
1611 drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj)
1616 if (atomic_read(&obj->handle_count) == 0)
1620 * Must bump handle count first as this may be the last
1621 * ref, in which case the object would disappear before we
1622 * checked for a name
1625 if (atomic_dec_and_test(&obj->handle_count))
1626 drm_gem_object_handle_free(obj);
1627 drm_gem_object_unreference_unlocked(obj);
1630 void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
1631 int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
1633 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1634 struct drm_file *filp,
1636 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1637 struct drm_file *file_priv);
1638 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1639 struct drm_file *file_priv);
1640 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1641 struct drm_file *file_priv);
1642 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1643 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1645 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1646 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1647 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1649 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1652 struct drm_map_list *_entry;
1653 list_for_each_entry(_entry, &dev->maplist, head)
1654 if (_entry->user_token == token)
1659 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1663 #include "drm_mem_util.h"
1665 extern int drm_fill_in_dev(struct drm_device *dev,
1666 const struct pci_device_id *ent,
1667 struct drm_driver *driver);
1668 int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
1672 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1674 if (dev->driver->device_is_agp != NULL) {
1675 int err = (*dev->driver->device_is_agp) (dev);
1682 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1685 extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1686 extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1687 extern int drm_get_pci_dev(struct pci_dev *pdev,
1688 const struct pci_device_id *ent,
1689 struct drm_driver *driver);
1692 /* platform section */
1693 extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1694 extern void drm_platform_exit(struct drm_driver *driver, struct platform_device *platform_device);
1696 extern int drm_get_platform_dev(struct platform_device *pdev,
1697 struct drm_driver *driver);
1699 #endif /* __KERNEL__ */