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 definiton 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 void drm_ut_debug_printk(unsigned int request_level,
127 const char *function_name,
128 const char *format, ...);
129 /***********************************************************************/
130 /** \name DRM template customization defaults */
133 /* driver capabilities and requirements mask */
134 #define DRIVER_USE_AGP 0x1
135 #define DRIVER_REQUIRE_AGP 0x2
136 #define DRIVER_USE_MTRR 0x4
137 #define DRIVER_PCI_DMA 0x8
138 #define DRIVER_SG 0x10
139 #define DRIVER_HAVE_DMA 0x20
140 #define DRIVER_HAVE_IRQ 0x40
141 #define DRIVER_IRQ_SHARED 0x80
142 #define DRIVER_IRQ_VBL 0x100
143 #define DRIVER_DMA_QUEUE 0x200
144 #define DRIVER_FB_DMA 0x400
145 #define DRIVER_IRQ_VBL2 0x800
146 #define DRIVER_GEM 0x1000
147 #define DRIVER_MODESET 0x2000
148 #define DRIVER_USE_PLATFORM_DEVICE 0x4000
150 /***********************************************************************/
151 /** \name Begin the DRM... */
154 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
155 also include looping detection. */
157 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
158 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
159 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
160 #define DRM_LOOPING_LIMIT 5000000
161 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
162 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
164 #define DRM_FLAG_DEBUG 0x01
166 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
167 #define DRM_MAP_HASH_OFFSET 0x10000000
171 /***********************************************************************/
172 /** \name Macros to make printk easier */
178 * \param fmt printf() like format string.
179 * \param arg arguments
181 #define DRM_ERROR(fmt, arg...) \
182 printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __func__ , ##arg)
185 * Memory error output.
187 * \param area memory area where the error occurred.
188 * \param fmt printf() like format string.
189 * \param arg arguments
191 #define DRM_MEM_ERROR(area, fmt, arg...) \
192 printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __func__, \
193 drm_mem_stats[area].name , ##arg)
195 #define DRM_INFO(fmt, arg...) printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
200 * \param fmt printf() like format string.
201 * \param arg arguments
204 #define DRM_DEBUG(fmt, args...) \
206 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
207 __func__, fmt, ##args); \
210 #define DRM_DEBUG_DRIVER(fmt, args...) \
212 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
213 __func__, fmt, ##args); \
215 #define DRM_DEBUG_KMS(fmt, args...) \
217 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
218 __func__, fmt, ##args); \
220 #define DRM_LOG(fmt, args...) \
222 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
223 NULL, fmt, ##args); \
225 #define DRM_LOG_KMS(fmt, args...) \
227 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
228 NULL, fmt, ##args); \
230 #define DRM_LOG_MODE(fmt, args...) \
232 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
233 NULL, fmt, ##args); \
235 #define DRM_LOG_DRIVER(fmt, args...) \
237 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
238 NULL, fmt, ##args); \
241 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
242 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
243 #define DRM_DEBUG(fmt, arg...) do { } while (0)
244 #define DRM_LOG(fmt, arg...) do { } while (0)
245 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
246 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
247 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
253 /***********************************************************************/
254 /** \name Internal types and structures */
257 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
259 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
260 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
262 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
265 * Test that the hardware lock is held by the caller, returning otherwise.
267 * \param dev DRM device.
268 * \param filp file pointer of the caller.
270 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
272 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
273 _file_priv->master->lock.file_priv != _file_priv) { \
274 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
275 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
276 _file_priv->master->lock.file_priv, _file_priv); \
282 * Ioctl function type.
284 * \param inode device inode.
285 * \param file_priv DRM file private pointer.
286 * \param cmd command.
287 * \param arg argument.
289 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
290 struct drm_file *file_priv);
292 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
295 #define DRM_IOCTL_NR(n) _IOC_NR(n)
296 #define DRM_MAJOR 226
299 #define DRM_MASTER 0x2
300 #define DRM_ROOT_ONLY 0x4
301 #define DRM_CONTROL_ALLOW 0x8
302 #define DRM_UNLOCKED 0x10
304 struct drm_ioctl_desc {
308 unsigned int cmd_drv;
312 * Creates a driver or general drm_ioctl_desc array entry for the given
313 * ioctl, for use by drm_ioctl().
316 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
317 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl}
319 struct drm_magic_entry {
320 struct list_head head;
321 struct drm_hash_item hash_item;
322 struct drm_file *priv;
325 struct drm_vma_entry {
326 struct list_head head;
327 struct vm_area_struct *vma;
335 int idx; /**< Index into master buflist */
336 int total; /**< Buffer size */
337 int order; /**< log-base-2(total) */
338 int used; /**< Amount of buffer in use (for DMA) */
339 unsigned long offset; /**< Byte offset (used internally) */
340 void *address; /**< Address of buffer */
341 unsigned long bus_address; /**< Bus address of buffer */
342 struct drm_buf *next; /**< Kernel-only: used for free list */
343 __volatile__ int waiting; /**< On kernel DMA queue */
344 __volatile__ int pending; /**< On hardware DMA queue */
345 wait_queue_head_t dma_wait; /**< Processes waiting */
346 struct drm_file *file_priv; /**< Private of holding file descr */
347 int context; /**< Kernel queue for this buffer */
348 int while_locked; /**< Dispatch this buffer while locked */
356 } list; /**< Which list we're on */
358 int dev_priv_size; /**< Size of buffer private storage */
359 void *dev_private; /**< Per-buffer private storage */
362 /** bufs is one longer than it has to be */
363 struct drm_waitlist {
364 int count; /**< Number of possible buffers */
365 struct drm_buf **bufs; /**< List of pointers to buffers */
366 struct drm_buf **rp; /**< Read pointer */
367 struct drm_buf **wp; /**< Write pointer */
368 struct drm_buf **end; /**< End pointer */
369 spinlock_t read_lock;
370 spinlock_t write_lock;
373 struct drm_freelist {
374 int initialized; /**< Freelist in use */
375 atomic_t count; /**< Number of free buffers */
376 struct drm_buf *next; /**< End pointer */
378 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
379 int low_mark; /**< Low water mark */
380 int high_mark; /**< High water mark */
381 atomic_t wfh; /**< If waiting for high mark */
385 typedef struct drm_dma_handle {
392 * Buffer entry. There is one of this for each buffer size order.
394 struct drm_buf_entry {
395 int buf_size; /**< size */
396 int buf_count; /**< number of buffers */
397 struct drm_buf *buflist; /**< buffer list */
400 struct drm_dma_handle **seglist;
402 struct drm_freelist freelist;
405 /* Event queued up for userspace to read */
406 struct drm_pending_event {
407 struct drm_event *event;
408 struct list_head link;
409 struct drm_file *file_priv;
410 pid_t pid; /* pid of requester, no guarantee it's valid by the time
411 we deliver the event, for tracing only */
412 void (*destroy)(struct drm_pending_event *event);
415 /** File private data */
421 unsigned long ioctl_count;
422 struct list_head lhead;
423 struct drm_minor *minor;
424 unsigned long lock_count;
426 /** Mapping of mm object handles to object pointers. */
427 struct idr object_idr;
428 /** Lock for synchronization of access to object_idr. */
429 spinlock_t table_lock;
434 int is_master; /* this file private is a master for a minor */
435 struct drm_master *master; /* master this node is currently associated with
436 N.B. not always minor->master */
437 struct list_head fbs;
439 wait_queue_head_t event_wait;
440 struct list_head event_list;
446 atomic_t use_count; /**< Outstanding uses (+1) */
447 atomic_t finalization; /**< Finalization in progress */
448 atomic_t block_count; /**< Count of processes waiting */
449 atomic_t block_read; /**< Queue blocked for reads */
450 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
451 atomic_t block_write; /**< Queue blocked for writes */
452 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
453 atomic_t total_queued; /**< Total queued statistic */
454 atomic_t total_flushed; /**< Total flushes statistic */
455 atomic_t total_locks; /**< Total locks statistics */
456 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
457 struct drm_waitlist waitlist; /**< Pending buffers */
458 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
464 struct drm_lock_data {
465 struct drm_hw_lock *hw_lock; /**< Hardware lock */
466 /** Private of lock holder's file (NULL=kernel) */
467 struct drm_file *file_priv;
468 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
469 unsigned long lock_time; /**< Time of last lock in jiffies */
471 uint32_t kernel_waiters;
472 uint32_t user_waiters;
479 struct drm_device_dma {
481 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
482 int buf_count; /**< total number of buffers */
483 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
485 int page_count; /**< number of pages */
486 unsigned long *pagelist; /**< page list */
487 unsigned long byte_count;
489 _DRM_DMA_USE_AGP = 0x01,
490 _DRM_DMA_USE_SG = 0x02,
491 _DRM_DMA_USE_FB = 0x04,
492 _DRM_DMA_USE_PCI_RO = 0x08
498 * AGP memory entry. Stored as a doubly linked list.
501 unsigned long handle; /**< handle */
503 unsigned long bound; /**< address */
505 struct list_head head;
511 * \sa drm_agp_init() and drm_device::agp.
513 struct drm_agp_head {
514 DRM_AGP_KERN agp_info; /**< AGP device information */
515 struct list_head memory;
516 unsigned long mode; /**< AGP mode */
517 struct agp_bridge_data *bridge;
518 int enabled; /**< whether the AGP bus as been enabled */
519 int acquired; /**< whether the AGP device has been acquired */
522 int cant_use_aperture;
523 unsigned long page_mask;
527 * Scatter-gather memory.
530 unsigned long handle;
533 struct page **pagelist;
539 struct drm_hw_lock *lock;
544 * Kernel side of a mapping
546 struct drm_local_map {
547 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
548 unsigned long size; /**< Requested physical size (bytes) */
549 enum drm_map_type type; /**< Type of memory to map */
550 enum drm_map_flags flags; /**< Flags */
551 void *handle; /**< User-space: "Handle" to pass to mmap() */
552 /**< Kernel-space: kernel-virtual address */
553 int mtrr; /**< MTRR slot used */
556 typedef struct drm_local_map drm_local_map_t;
561 struct drm_map_list {
562 struct list_head head; /**< list head */
563 struct drm_hash_item hash;
564 struct drm_local_map *map; /**< mapping */
566 struct drm_master *master;
567 struct drm_mm_node *file_offset_node; /**< fake offset */
571 * Context handle list
573 struct drm_ctx_list {
574 struct list_head head; /**< list head */
575 drm_context_t handle; /**< context handle */
576 struct drm_file *tag; /**< associated fd private data */
579 /* location of GART table */
580 #define DRM_ATI_GART_MAIN 1
581 #define DRM_ATI_GART_FB 2
583 #define DRM_ATI_GART_PCI 1
584 #define DRM_ATI_GART_PCIE 2
585 #define DRM_ATI_GART_IGP 3
587 struct drm_ati_pcigart_info {
588 int gart_table_location;
592 dma_addr_t table_mask;
593 struct drm_dma_handle *table_handle;
594 struct drm_local_map mapping;
599 * GEM specific mm private for tracking GEM objects
602 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */
603 struct drm_open_hash offset_hash; /**< User token hash table for maps */
607 * This structure defines the drm_mm memory object, which will be used by the
608 * DRM for its buffer objects.
610 struct drm_gem_object {
611 /** Reference count of this object */
612 struct kref refcount;
614 /** Handle count of this object. Each handle also holds a reference */
615 atomic_t handle_count; /* number of handles on this object */
617 /** Related drm device */
618 struct drm_device *dev;
620 /** File representing the shmem storage */
623 /* Mapping info for this object */
624 struct drm_map_list map_list;
627 * Size of the object, in bytes. Immutable over the object's
633 * Global name for this object, starts at 1. 0 means unnamed.
634 * Access is covered by the object_name_lock in the related drm_device
639 * Memory domains. These monitor which caches contain read/write data
640 * related to the object. When transitioning from one set of domains
641 * to another, the driver is called to ensure that caches are suitably
642 * flushed and invalidated
644 uint32_t read_domains;
645 uint32_t write_domain;
648 * While validating an exec operation, the
649 * new read/write domain values are computed here.
650 * They will be transferred to the above values
651 * at the point that any cache flushing occurs
653 uint32_t pending_read_domains;
654 uint32_t pending_write_domain;
656 void *driver_private;
659 #include "drm_crtc.h"
661 /* per-master structure */
664 struct kref refcount; /* refcount for this master */
666 struct list_head head; /**< each minor contains a list of masters */
667 struct drm_minor *minor; /**< link back to minor we are a master for */
669 char *unique; /**< Unique identifier: e.g., busid */
670 int unique_len; /**< Length of unique field */
671 int unique_size; /**< amount allocated */
673 int blocked; /**< Blocked due to VC switch? */
675 /** \name Authentication */
677 struct drm_open_hash magiclist;
678 struct list_head magicfree;
681 struct drm_lock_data lock; /**< Information on hardware lock */
683 void *driver_priv; /**< Private structure for driver to use */
686 /* Size of ringbuffer for vblank timestamps. Just double-buffer
687 * in initial implementation.
689 #define DRM_VBLANKTIME_RBSIZE 2
691 /* Flags and return codes for get_vblank_timestamp() driver function. */
692 #define DRM_CALLED_FROM_VBLIRQ 1
693 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
694 #define DRM_VBLANKTIME_INVBL (1 << 1)
696 /* get_scanout_position() return flags */
697 #define DRM_SCANOUTPOS_VALID (1 << 0)
698 #define DRM_SCANOUTPOS_INVBL (1 << 1)
699 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
702 * DRM driver structure. This structure represent the common code for
703 * a family of cards. There will one drm_device for each card present
707 int (*load) (struct drm_device *, unsigned long flags);
708 int (*firstopen) (struct drm_device *);
709 int (*open) (struct drm_device *, struct drm_file *);
710 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
711 void (*postclose) (struct drm_device *, struct drm_file *);
712 void (*lastclose) (struct drm_device *);
713 int (*unload) (struct drm_device *);
714 int (*suspend) (struct drm_device *, pm_message_t state);
715 int (*resume) (struct drm_device *);
716 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
717 int (*dma_quiescent) (struct drm_device *);
718 int (*context_dtor) (struct drm_device *dev, int context);
721 * get_vblank_counter - get raw hardware vblank counter
723 * @crtc: counter to fetch
725 * Driver callback for fetching a raw hardware vblank counter
726 * for @crtc. If a device doesn't have a hardware counter, the
727 * driver can simply return the value of drm_vblank_count and
728 * make the enable_vblank() and disable_vblank() hooks into no-ops,
729 * leaving interrupts enabled at all times.
731 * Wraparound handling and loss of events due to modesetting is dealt
732 * with in the DRM core code.
735 * Raw vblank counter value.
737 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
740 * enable_vblank - enable vblank interrupt events
742 * @crtc: which irq to enable
744 * Enable vblank interrupts for @crtc. If the device doesn't have
745 * a hardware vblank counter, this routine should be a no-op, since
746 * interrupts will have to stay on to keep the count accurate.
749 * Zero on success, appropriate errno if the given @crtc's vblank
750 * interrupt cannot be enabled.
752 int (*enable_vblank) (struct drm_device *dev, int crtc);
755 * disable_vblank - disable vblank interrupt events
757 * @crtc: which irq to enable
759 * Disable vblank interrupts for @crtc. If the device doesn't have
760 * a hardware vblank counter, this routine should be a no-op, since
761 * interrupts will have to stay on to keep the count accurate.
763 void (*disable_vblank) (struct drm_device *dev, int crtc);
766 * Called by \c drm_device_is_agp. Typically used to determine if a
767 * card is really attached to AGP or not.
769 * \param dev DRM device handle
772 * One of three values is returned depending on whether or not the
773 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
774 * (return of 1), or may or may not be AGP (return of 2).
776 int (*device_is_agp) (struct drm_device *dev);
779 * Called by vblank timestamping code.
781 * Return the current display scanout position from a crtc.
783 * \param dev DRM device.
784 * \param crtc Id of the crtc to query.
785 * \param *vpos Target location for current vertical scanout position.
786 * \param *hpos Target location for current horizontal scanout position.
788 * Returns vpos as a positive number while in active scanout area.
789 * Returns vpos as a negative number inside vblank, counting the number
790 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
791 * until start of active scanout / end of vblank."
793 * \return Flags, or'ed together as follows:
795 * DRM_SCANOUTPOS_VALID = Query successfull.
796 * DRM_SCANOUTPOS_INVBL = Inside vblank.
797 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
798 * this flag means that returned position may be offset by a constant
799 * but unknown small number of scanlines wrt. real scanout position.
802 int (*get_scanout_position) (struct drm_device *dev, int crtc,
803 int *vpos, int *hpos);
806 * Called by \c drm_get_last_vbltimestamp. Should return a precise
807 * timestamp when the most recent VBLANK interval ended or will end.
809 * Specifically, the timestamp in @vblank_time should correspond as
810 * closely as possible to the time when the first video scanline of
811 * the video frame after the end of VBLANK will start scanning out,
812 * the time immmediately after end of the VBLANK interval. If the
813 * @crtc is currently inside VBLANK, this will be a time in the future.
814 * If the @crtc is currently scanning out a frame, this will be the
815 * past start time of the current scanout. This is meant to adhere
816 * to the OpenML OML_sync_control extension specification.
818 * \param dev dev DRM device handle.
819 * \param crtc crtc for which timestamp should be returned.
820 * \param *max_error Maximum allowable timestamp error in nanoseconds.
821 * Implementation should strive to provide timestamp
822 * with an error of at most *max_error nanoseconds.
823 * Returns true upper bound on error for timestamp.
824 * \param *vblank_time Target location for returned vblank timestamp.
825 * \param flags 0 = Defaults, no special treatment needed.
826 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
827 * irq handler. Some drivers need to apply some workarounds
828 * for gpu-specific vblank irq quirks if flag is set.
831 * Zero if timestamping isn't supported in current display mode or a
832 * negative number on failure. A positive status code on success,
833 * which describes how the vblank_time timestamp was computed.
835 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
837 struct timeval *vblank_time,
840 /* these have to be filled in */
842 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
843 void (*irq_preinstall) (struct drm_device *dev);
844 int (*irq_postinstall) (struct drm_device *dev);
845 void (*irq_uninstall) (struct drm_device *dev);
846 void (*reclaim_buffers) (struct drm_device *dev,
847 struct drm_file * file_priv);
848 void (*reclaim_buffers_locked) (struct drm_device *dev,
849 struct drm_file *file_priv);
850 void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
851 struct drm_file *file_priv);
852 void (*set_version) (struct drm_device *dev,
853 struct drm_set_version *sv);
855 /* Master routines */
856 int (*master_create)(struct drm_device *dev, struct drm_master *master);
857 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
859 * master_set is called whenever the minor master is set.
860 * master_drop is called whenever the minor master is dropped.
863 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
865 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
868 int (*debugfs_init)(struct drm_minor *minor);
869 void (*debugfs_cleanup)(struct drm_minor *minor);
872 * Driver-specific constructor for drm_gem_objects, to set up
873 * obj->driver_private.
875 * Returns 0 on success.
877 int (*gem_init_object) (struct drm_gem_object *obj);
878 void (*gem_free_object) (struct drm_gem_object *obj);
880 /* vga arb irq handler */
881 void (*vgaarb_irq)(struct drm_device *dev, bool state);
883 /* Driver private ops for this object */
884 struct vm_operations_struct *gem_vm_ops;
895 struct drm_ioctl_desc *ioctls;
897 struct file_operations fops;
898 struct pci_driver pci_driver;
899 struct platform_device *platform_device;
900 /* List of devices hanging off this driver */
901 struct list_head device_list;
904 #define DRM_MINOR_UNASSIGNED 0
905 #define DRM_MINOR_LEGACY 1
906 #define DRM_MINOR_CONTROL 2
907 #define DRM_MINOR_RENDER 3
911 * debugfs node list. This structure represents a debugfs file to
912 * be created by the drm core
914 struct drm_debugfs_list {
915 const char *name; /** file name */
916 int (*show)(struct seq_file*, void*); /** show callback */
917 u32 driver_features; /**< Required driver features for this entry */
921 * debugfs node structure. This structure represents a debugfs file.
923 struct drm_debugfs_node {
924 struct list_head list;
925 struct drm_minor *minor;
926 struct drm_debugfs_list *debugfs_ent;
931 * Info file list entry. This structure represents a debugfs or proc file to
932 * be created by the drm core
934 struct drm_info_list {
935 const char *name; /** file name */
936 int (*show)(struct seq_file*, void*); /** show callback */
937 u32 driver_features; /**< Required driver features for this entry */
942 * debugfs node structure. This structure represents a debugfs file.
944 struct drm_info_node {
945 struct list_head list;
946 struct drm_minor *minor;
947 struct drm_info_list *info_ent;
952 * DRM minor structure. This structure represents a drm minor number.
955 int index; /**< Minor device number */
956 int type; /**< Control or render */
957 dev_t device; /**< Device number for mknod */
958 struct device kdev; /**< Linux device */
959 struct drm_device *dev;
961 struct proc_dir_entry *proc_root; /**< proc directory entry */
962 struct drm_info_node proc_nodes;
963 struct dentry *debugfs_root;
964 struct drm_info_node debugfs_nodes;
966 struct drm_master *master; /* currently active master for this node */
967 struct list_head master_list;
968 struct drm_mode_group mode_group;
971 struct drm_pending_vblank_event {
972 struct drm_pending_event base;
974 struct drm_event_vblank event;
978 * DRM device structure. This structure represent a complete card that
979 * may contain multiple heads.
982 struct list_head driver_item; /**< list of devices per driver */
983 char *devname; /**< For /proc/interrupts */
984 int if_version; /**< Highest interface version set */
988 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
989 struct mutex struct_mutex; /**< For others */
992 /** \name Usage Counters */
994 int open_count; /**< Outstanding files open */
995 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
996 atomic_t vma_count; /**< Outstanding vma areas open */
997 int buf_use; /**< Buffers in use -- cannot alloc */
998 atomic_t buf_alloc; /**< Buffer allocation in progress */
1001 /** \name Performance counters */
1003 unsigned long counters;
1004 enum drm_stat_type types[15];
1005 atomic_t counts[15];
1008 struct list_head filelist;
1010 /** \name Memory management */
1012 struct list_head maplist; /**< Linked list of regions */
1013 int map_count; /**< Number of mappable regions */
1014 struct drm_open_hash map_hash; /**< User token hash table for maps */
1016 /** \name Context handle management */
1018 struct list_head ctxlist; /**< Linked list of context handles */
1019 int ctx_count; /**< Number of context handles */
1020 struct mutex ctxlist_mutex; /**< For ctxlist */
1024 struct list_head vmalist; /**< List of vmas (for debugging) */
1028 /** \name DMA queues (contexts) */
1030 int queue_count; /**< Number of active DMA queues */
1031 int queue_reserved; /**< Number of reserved DMA queues */
1032 int queue_slots; /**< Actual length of queuelist */
1033 struct drm_queue **queuelist; /**< Vector of pointers to DMA queues */
1034 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1037 /** \name Context support */
1039 int irq_enabled; /**< True if irq handler is enabled */
1040 __volatile__ long context_flag; /**< Context swapping flag */
1041 __volatile__ long interrupt_flag; /**< Interruption handler flag */
1042 __volatile__ long dma_flag; /**< DMA dispatch flag */
1043 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
1044 int last_checked; /**< Last context checked for DMA */
1045 int last_context; /**< Last current context */
1046 unsigned long last_switch; /**< jiffies at last context switch */
1049 struct work_struct work;
1050 /** \name VBLANK IRQ support */
1054 * At load time, disabling the vblank interrupt won't be allowed since
1055 * old clients may not call the modeset ioctl and therefore misbehave.
1056 * Once the modeset ioctl *has* been called though, we can safely
1057 * disable them when unused.
1059 int vblank_disable_allowed;
1061 wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */
1062 atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1063 struct timeval *_vblank_time; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1064 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1065 spinlock_t vbl_lock;
1066 atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */
1067 u32 *last_vblank; /* protected by dev->vbl_lock, used */
1068 /* for wraparound handling */
1069 int *vblank_enabled; /* so we don't call enable more than
1071 int *vblank_inmodeset; /* Display driver is setting mode */
1072 u32 *last_vblank_wait; /* Last vblank seqno waited per CRTC */
1073 struct timer_list vblank_disable_timer;
1075 u32 max_vblank_count; /**< size of vblank counter register */
1080 struct list_head vblank_event_list;
1081 spinlock_t event_lock;
1087 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
1088 wait_queue_head_t buf_readers; /**< Processes waiting to read */
1089 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
1091 struct drm_agp_head *agp; /**< AGP data */
1093 struct device *dev; /**< Device structure */
1094 struct pci_dev *pdev; /**< PCI device structure */
1095 int pci_vendor; /**< PCI vendor id */
1096 int pci_device; /**< PCI device id */
1098 struct pci_controller *hose;
1101 struct platform_device *platformdev; /**< Platform device struture */
1103 struct drm_sg_mem *sg; /**< Scatter gather memory */
1104 int num_crtcs; /**< Number of CRTCs on this device */
1105 void *dev_private; /**< device private data */
1107 struct address_space *dev_mapping;
1108 struct drm_sigdata sigdata; /**< For block_all_signals */
1111 struct drm_driver *driver;
1112 struct drm_local_map *agp_buffer_map;
1113 unsigned int agp_buffer_token;
1114 struct drm_minor *control; /**< Control node for card */
1115 struct drm_minor *primary; /**< render type primary screen head */
1117 struct drm_mode_config mode_config; /**< Current mode config */
1119 /** \name GEM information */
1121 spinlock_t object_name_lock;
1122 struct idr object_name_idr;
1124 int switch_power_state;
1127 #define DRM_SWITCH_POWER_ON 0
1128 #define DRM_SWITCH_POWER_OFF 1
1129 #define DRM_SWITCH_POWER_CHANGING 2
1131 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1134 return ((dev->driver->driver_features & feature) ? 1 : 0);
1137 static inline int drm_dev_to_irq(struct drm_device *dev)
1139 if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE))
1140 return platform_get_irq(dev->platformdev, 0);
1142 return dev->pdev->irq;
1145 static inline int drm_get_pci_domain(struct drm_device *dev)
1147 if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE))
1151 /* For historical reasons, drm_get_pci_domain() is busticated
1152 * on most archs and has to remain so for userspace interface
1153 * < 1.4, except on alpha which was right from the beginning
1155 if (dev->if_version < 0x10004)
1157 #endif /* __alpha__ */
1159 return pci_domain_nr(dev->pdev->bus);
1163 static inline int drm_core_has_AGP(struct drm_device *dev)
1165 return drm_core_check_feature(dev, DRIVER_USE_AGP);
1168 #define drm_core_has_AGP(dev) (0)
1172 static inline int drm_core_has_MTRR(struct drm_device *dev)
1174 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1177 #define DRM_MTRR_WC MTRR_TYPE_WRCOMB
1179 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1182 return mtrr_add(offset, size, flags, 1);
1185 static inline int drm_mtrr_del(int handle, unsigned long offset,
1186 unsigned long size, unsigned int flags)
1188 return mtrr_del(handle, offset, size);
1192 #define drm_core_has_MTRR(dev) (0)
1194 #define DRM_MTRR_WC 0
1196 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1202 static inline int drm_mtrr_del(int handle, unsigned long offset,
1203 unsigned long size, unsigned int flags)
1209 /******************************************************************/
1210 /** \name Internal function definitions */
1213 /* Driver support (drm_drv.h) */
1214 extern int drm_init(struct drm_driver *driver);
1215 extern void drm_exit(struct drm_driver *driver);
1216 extern long drm_ioctl(struct file *filp,
1217 unsigned int cmd, unsigned long arg);
1218 extern long drm_compat_ioctl(struct file *filp,
1219 unsigned int cmd, unsigned long arg);
1220 extern int drm_lastclose(struct drm_device *dev);
1222 /* Device support (drm_fops.h) */
1223 extern struct mutex drm_global_mutex;
1224 extern int drm_open(struct inode *inode, struct file *filp);
1225 extern int drm_stub_open(struct inode *inode, struct file *filp);
1226 extern int drm_fasync(int fd, struct file *filp, int on);
1227 extern ssize_t drm_read(struct file *filp, char __user *buffer,
1228 size_t count, loff_t *offset);
1229 extern int drm_release(struct inode *inode, struct file *filp);
1231 /* Mapping support (drm_vm.h) */
1232 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1233 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1234 extern void drm_vm_open_locked(struct vm_area_struct *vma);
1235 extern void drm_vm_close_locked(struct vm_area_struct *vma);
1236 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1238 /* Memory management support (drm_memory.h) */
1239 #include "drm_memory.h"
1240 extern void drm_mem_init(void);
1241 extern int drm_mem_info(char *buf, char **start, off_t offset,
1242 int request, int *eof, void *data);
1243 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
1245 extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
1246 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
1247 extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
1248 struct page **pages,
1249 unsigned long num_pages,
1250 uint32_t gtt_offset,
1252 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
1254 /* Misc. IOCTL support (drm_ioctl.h) */
1255 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1256 struct drm_file *file_priv);
1257 extern int drm_getunique(struct drm_device *dev, void *data,
1258 struct drm_file *file_priv);
1259 extern int drm_setunique(struct drm_device *dev, void *data,
1260 struct drm_file *file_priv);
1261 extern int drm_getmap(struct drm_device *dev, void *data,
1262 struct drm_file *file_priv);
1263 extern int drm_getclient(struct drm_device *dev, void *data,
1264 struct drm_file *file_priv);
1265 extern int drm_getstats(struct drm_device *dev, void *data,
1266 struct drm_file *file_priv);
1267 extern int drm_setversion(struct drm_device *dev, void *data,
1268 struct drm_file *file_priv);
1269 extern int drm_noop(struct drm_device *dev, void *data,
1270 struct drm_file *file_priv);
1272 /* Context IOCTL support (drm_context.h) */
1273 extern int drm_resctx(struct drm_device *dev, void *data,
1274 struct drm_file *file_priv);
1275 extern int drm_addctx(struct drm_device *dev, void *data,
1276 struct drm_file *file_priv);
1277 extern int drm_modctx(struct drm_device *dev, void *data,
1278 struct drm_file *file_priv);
1279 extern int drm_getctx(struct drm_device *dev, void *data,
1280 struct drm_file *file_priv);
1281 extern int drm_switchctx(struct drm_device *dev, void *data,
1282 struct drm_file *file_priv);
1283 extern int drm_newctx(struct drm_device *dev, void *data,
1284 struct drm_file *file_priv);
1285 extern int drm_rmctx(struct drm_device *dev, void *data,
1286 struct drm_file *file_priv);
1288 extern int drm_ctxbitmap_init(struct drm_device *dev);
1289 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1290 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1292 extern int drm_setsareactx(struct drm_device *dev, void *data,
1293 struct drm_file *file_priv);
1294 extern int drm_getsareactx(struct drm_device *dev, void *data,
1295 struct drm_file *file_priv);
1297 /* Authentication IOCTL support (drm_auth.h) */
1298 extern int drm_getmagic(struct drm_device *dev, void *data,
1299 struct drm_file *file_priv);
1300 extern int drm_authmagic(struct drm_device *dev, void *data,
1301 struct drm_file *file_priv);
1303 /* Cache management (drm_cache.c) */
1304 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1306 /* Locking IOCTL support (drm_lock.h) */
1307 extern int drm_lock(struct drm_device *dev, void *data,
1308 struct drm_file *file_priv);
1309 extern int drm_unlock(struct drm_device *dev, void *data,
1310 struct drm_file *file_priv);
1311 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1312 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1313 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1316 * These are exported to drivers so that they can implement fencing using
1317 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1320 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1322 /* Buffer management support (drm_bufs.h) */
1323 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1324 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1325 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1326 unsigned int size, enum drm_map_type type,
1327 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1328 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1329 struct drm_file *file_priv);
1330 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1331 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1332 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1333 struct drm_file *file_priv);
1334 extern int drm_addbufs(struct drm_device *dev, void *data,
1335 struct drm_file *file_priv);
1336 extern int drm_infobufs(struct drm_device *dev, void *data,
1337 struct drm_file *file_priv);
1338 extern int drm_markbufs(struct drm_device *dev, void *data,
1339 struct drm_file *file_priv);
1340 extern int drm_freebufs(struct drm_device *dev, void *data,
1341 struct drm_file *file_priv);
1342 extern int drm_mapbufs(struct drm_device *dev, void *data,
1343 struct drm_file *file_priv);
1344 extern int drm_order(unsigned long size);
1346 /* DMA support (drm_dma.h) */
1347 extern int drm_dma_setup(struct drm_device *dev);
1348 extern void drm_dma_takedown(struct drm_device *dev);
1349 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1350 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1351 struct drm_file *filp);
1353 /* IRQ support (drm_irq.h) */
1354 extern int drm_control(struct drm_device *dev, void *data,
1355 struct drm_file *file_priv);
1356 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
1357 extern int drm_irq_install(struct drm_device *dev);
1358 extern int drm_irq_uninstall(struct drm_device *dev);
1359 extern void drm_driver_irq_preinstall(struct drm_device *dev);
1360 extern void drm_driver_irq_postinstall(struct drm_device *dev);
1361 extern void drm_driver_irq_uninstall(struct drm_device *dev);
1363 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1364 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1365 struct drm_file *filp);
1366 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1367 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1368 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1369 struct timeval *vblanktime);
1370 extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1371 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1372 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1373 extern void drm_vblank_off(struct drm_device *dev, int crtc);
1374 extern void drm_vblank_cleanup(struct drm_device *dev);
1375 extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1376 struct timeval *tvblank, unsigned flags);
1377 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1378 int crtc, int *max_error,
1379 struct timeval *vblank_time,
1381 struct drm_crtc *refcrtc);
1382 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
1384 /* Modesetting support */
1385 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1386 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1387 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1388 struct drm_file *file_priv);
1390 /* AGP/GART support (drm_agpsupport.h) */
1391 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1392 extern int drm_agp_acquire(struct drm_device *dev);
1393 extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1394 struct drm_file *file_priv);
1395 extern int drm_agp_release(struct drm_device *dev);
1396 extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1397 struct drm_file *file_priv);
1398 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1399 extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1400 struct drm_file *file_priv);
1401 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1402 extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1403 struct drm_file *file_priv);
1404 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1405 extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1406 struct drm_file *file_priv);
1407 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1408 extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1409 struct drm_file *file_priv);
1410 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1411 extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1412 struct drm_file *file_priv);
1413 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1414 extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1415 struct drm_file *file_priv);
1417 /* Stub support (drm_stub.h) */
1418 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1419 struct drm_file *file_priv);
1420 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1421 struct drm_file *file_priv);
1422 struct drm_master *drm_master_create(struct drm_minor *minor);
1423 extern struct drm_master *drm_master_get(struct drm_master *master);
1424 extern void drm_master_put(struct drm_master **master);
1425 extern int drm_get_pci_dev(struct pci_dev *pdev,
1426 const struct pci_device_id *ent,
1427 struct drm_driver *driver);
1428 extern int drm_get_platform_dev(struct platform_device *pdev,
1429 struct drm_driver *driver);
1430 extern void drm_put_dev(struct drm_device *dev);
1431 extern int drm_put_minor(struct drm_minor **minor);
1432 extern unsigned int drm_debug;
1434 extern unsigned int drm_vblank_offdelay;
1435 extern unsigned int drm_timestamp_precision;
1437 extern struct class *drm_class;
1438 extern struct proc_dir_entry *drm_proc_root;
1439 extern struct dentry *drm_debugfs_root;
1441 extern struct idr drm_minors_idr;
1443 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1445 /* Proc support (drm_proc.h) */
1446 extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1447 struct proc_dir_entry *root);
1448 extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1450 /* Debugfs support */
1451 #if defined(CONFIG_DEBUG_FS)
1452 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1453 struct dentry *root);
1454 extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1455 struct dentry *root, struct drm_minor *minor);
1456 extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1457 struct drm_minor *minor);
1458 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1461 /* Info file support */
1462 extern int drm_name_info(struct seq_file *m, void *data);
1463 extern int drm_vm_info(struct seq_file *m, void *data);
1464 extern int drm_queues_info(struct seq_file *m, void *data);
1465 extern int drm_bufs_info(struct seq_file *m, void *data);
1466 extern int drm_vblank_info(struct seq_file *m, void *data);
1467 extern int drm_clients_info(struct seq_file *m, void* data);
1468 extern int drm_gem_name_info(struct seq_file *m, void *data);
1471 extern int drm_vma_info(struct seq_file *m, void *data);
1474 /* Scatter Gather Support (drm_scatter.h) */
1475 extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1476 extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1477 struct drm_file *file_priv);
1478 extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1479 extern int drm_sg_free(struct drm_device *dev, void *data,
1480 struct drm_file *file_priv);
1482 /* ATI PCIGART support (ati_pcigart.h) */
1483 extern int drm_ati_pcigart_init(struct drm_device *dev,
1484 struct drm_ati_pcigart_info * gart_info);
1485 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1486 struct drm_ati_pcigart_info * gart_info);
1488 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1490 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1491 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1493 /* sysfs support (drm_sysfs.c) */
1494 struct drm_sysfs_class;
1495 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1496 extern void drm_sysfs_destroy(void);
1497 extern int drm_sysfs_device_add(struct drm_minor *minor);
1498 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1499 extern void drm_sysfs_device_remove(struct drm_minor *minor);
1500 extern char *drm_get_connector_status_name(enum drm_connector_status status);
1501 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1502 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1504 /* Graphics Execution Manager library functions (drm_gem.c) */
1505 int drm_gem_init(struct drm_device *dev);
1506 void drm_gem_destroy(struct drm_device *dev);
1507 void drm_gem_object_release(struct drm_gem_object *obj);
1508 void drm_gem_object_free(struct kref *kref);
1509 struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1511 int drm_gem_object_init(struct drm_device *dev,
1512 struct drm_gem_object *obj, size_t size);
1513 void drm_gem_object_handle_free(struct drm_gem_object *obj);
1514 void drm_gem_vm_open(struct vm_area_struct *vma);
1515 void drm_gem_vm_close(struct vm_area_struct *vma);
1516 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1518 #include "drm_global.h"
1521 drm_gem_object_reference(struct drm_gem_object *obj)
1523 kref_get(&obj->refcount);
1527 drm_gem_object_unreference(struct drm_gem_object *obj)
1530 kref_put(&obj->refcount, drm_gem_object_free);
1534 drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1537 struct drm_device *dev = obj->dev;
1538 mutex_lock(&dev->struct_mutex);
1539 kref_put(&obj->refcount, drm_gem_object_free);
1540 mutex_unlock(&dev->struct_mutex);
1544 int drm_gem_handle_create(struct drm_file *file_priv,
1545 struct drm_gem_object *obj,
1549 drm_gem_object_handle_reference(struct drm_gem_object *obj)
1551 drm_gem_object_reference(obj);
1552 atomic_inc(&obj->handle_count);
1556 drm_gem_object_handle_unreference(struct drm_gem_object *obj)
1561 if (atomic_read(&obj->handle_count) == 0)
1564 * Must bump handle count first as this may be the last
1565 * ref, in which case the object would disappear before we
1566 * checked for a name
1568 if (atomic_dec_and_test(&obj->handle_count))
1569 drm_gem_object_handle_free(obj);
1570 drm_gem_object_unreference(obj);
1574 drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj)
1579 if (atomic_read(&obj->handle_count) == 0)
1583 * Must bump handle count first as this may be the last
1584 * ref, in which case the object would disappear before we
1585 * checked for a name
1588 if (atomic_dec_and_test(&obj->handle_count))
1589 drm_gem_object_handle_free(obj);
1590 drm_gem_object_unreference_unlocked(obj);
1593 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1594 struct drm_file *filp,
1596 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1597 struct drm_file *file_priv);
1598 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1599 struct drm_file *file_priv);
1600 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1601 struct drm_file *file_priv);
1602 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1603 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1605 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1606 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1607 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1609 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1612 struct drm_map_list *_entry;
1613 list_for_each_entry(_entry, &dev->maplist, head)
1614 if (_entry->user_token == token)
1619 static __inline__ int drm_device_is_agp(struct drm_device *dev)
1621 if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE))
1624 if (dev->driver->device_is_agp != NULL) {
1625 int err = (*dev->driver->device_is_agp) (dev);
1632 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1635 static __inline__ int drm_device_is_pcie(struct drm_device *dev)
1637 if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE))
1640 return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1643 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1647 #include "drm_mem_util.h"
1649 static inline void *drm_get_device(struct drm_device *dev)
1651 if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE))
1652 return dev->platformdev;
1657 extern int drm_platform_init(struct drm_driver *driver);
1658 extern int drm_pci_init(struct drm_driver *driver);
1659 extern int drm_fill_in_dev(struct drm_device *dev,
1660 const struct pci_device_id *ent,
1661 struct drm_driver *driver);
1662 int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
1665 #endif /* __KERNEL__ */