2 * Internal Header for the Direct Rendering Manager
4 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
6 * Copyright (c) 2009-2010, Code Aurora Forum.
9 * Author: Rickard E. (Rik) Faith <faith@valinux.com>
10 * Author: Gareth Hughes <gareth@valinux.com>
12 * Permission is hereby granted, free of charge, to any person obtaining a
13 * copy of this software and associated documentation files (the "Software"),
14 * to deal in the Software without restriction, including without limitation
15 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
16 * and/or sell copies of the Software, and to permit persons to whom the
17 * Software is furnished to do so, subject to the following conditions:
19 * The above copyright notice and this permission notice (including the next
20 * paragraph) shall be included in all copies or substantial portions of the
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
24 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
26 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
27 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
28 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
29 * OTHER DEALINGS IN THE SOFTWARE.
35 #if defined(_KERNEL) || defined(__KERNEL__)
37 #include <sys/param.h>
38 #include <sys/queue.h>
39 #include <sys/malloc.h>
40 #include <sys/kernel.h>
42 #include <sys/module.h>
43 #include <sys/systm.h>
44 #include <sys/device.h>
45 #include <sys/sglist.h>
50 #include <sys/spinlock.h>
51 #include <sys/spinlock2.h>
52 #include <sys/fcntl.h>
54 #include <sys/filio.h>
55 #include <sys/sysctl.h>
57 #include <sys/queue.h>
58 #include <sys/signalvar.h>
60 #include <linux/highmem.h>
62 #include <sys/taskqueue.h>
66 #include <vm/vm_extern.h>
67 #include <vm/vm_kern.h>
68 #include <vm/vm_map.h>
69 #include <vm/vm_object.h>
70 #include <vm/vm_page2.h>
71 #include <vm/vm_pager.h>
72 #include <vm/vm_param.h>
73 #include <machine/param.h>
74 #include <machine/pmap.h>
76 #include <machine/specialreg.h>
78 #include <machine/sysarch.h>
79 #include <sys/endian.h>
82 #include <sys/memrange.h>
83 #include <sys/agpio.h>
84 #include <sys/mutex.h>
86 #include <uapi_drm/drm.h>
87 #include <uapi_drm/drm_sarea.h>
89 #include <linux/atomic.h>
90 #include <linux/bug.h>
91 #include <linux/dma-mapping.h>
92 #include <linux/capability.h>
93 #include <linux/err.h>
94 #include <linux/idr.h>
95 #include <linux/pci.h>
96 #include <linux/jiffies.h>
97 #include <linux/kernel.h>
99 #include <linux/kref.h>
100 #include <linux/list.h>
101 #include <linux/mm.h>
102 #include <linux/moduleparam.h>
103 #include <linux/mutex.h>
104 #include <linux/slab.h>
105 #include <linux/scatterlist.h>
106 #include <linux/timer.h>
108 #include <linux/seq_file.h>
109 #include <linux/types.h>
110 #include <linux/vmalloc.h>
111 #include <linux/wait.h>
112 #include <linux/workqueue.h>
114 #include <asm/uaccess.h>
116 #include <drm/drm_global.h>
118 #include <drm/drm_vma_manager.h>
120 #include <drm/drm_os_linux.h>
121 #include <drm/drm_hashtab.h>
122 #include <drm/drm_mm.h>
127 struct drm_gem_object;
131 struct reservation_object;
132 struct dma_buf_attachment;
135 * 4 debug categories are defined:
137 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...
138 * This is the category used by the DRM_DEBUG() macro.
140 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...
141 * This is the category used by the DRM_DEBUG_DRIVER() macro.
143 * KMS: used in the modesetting code.
144 * This is the category used by the DRM_DEBUG_KMS() macro.
146 * PRIME: used in the prime code.
147 * This is the category used by the DRM_DEBUG_PRIME() macro.
149 * ATOMIC: used in the atomic code.
150 * This is the category used by the DRM_DEBUG_ATOMIC() macro.
152 * Enabling verbose debug messages is done through the drm.debug parameter,
153 * each category being enabled by a bit.
155 * drm.debug=0x1 will enable CORE messages
156 * drm.debug=0x2 will enable DRIVER messages
157 * drm.debug=0x3 will enable CORE and DRIVER messages
159 * drm.debug=0xf will enable all messages
161 * An interesting feature is that it's possible to enable verbose logging at
162 * run-time by echoing the debug value in its sysfs node:
163 * # echo 0xf > /sys/module/drm/parameters/debug
165 #define DRM_UT_CORE 0x01
166 #define DRM_UT_DRIVER 0x02
167 #define DRM_UT_KMS 0x04
168 #define DRM_UT_PRIME 0x08
169 #define DRM_UT_ATOMIC 0x10
171 void drm_ut_debug_printk(const char *function_name,
172 const char *format, ...);
174 void drm_err(const char *format, ...);
176 /***********************************************************************/
177 /** \name DRM template customization defaults */
180 /* driver capabilities and requirements mask */
181 #define DRIVER_USE_AGP 0x1
182 #define DRIVER_REQUIRE_AGP 0x2
183 #define DRIVER_PCI_DMA 0x8
184 #define DRIVER_SG 0x10
185 #define DRIVER_HAVE_DMA 0x20
186 #define DRIVER_HAVE_IRQ 0x40
187 #define DRIVER_IRQ_SHARED 0x80
188 #define DRIVER_DMA_QUEUE 0x200
189 #define DRIVER_GEM 0x1000
190 #define DRIVER_MODESET 0x2000
191 #define DRIVER_PRIME 0x4000
192 #define DRIVER_RENDER 0x8000
193 #define DRIVER_ATOMIC 0x10000
195 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
197 /***********************************************************************/
198 /** \name Macros to make printk easier */
204 * \param fmt printf() like format string.
205 * \param arg arguments
207 #define DRM_ERROR(fmt, ...) \
208 kprintf("error: [" DRM_NAME ":pid%d:%s] *ERROR* " fmt, \
209 DRM_CURRENTPID, __func__ , ##__VA_ARGS__)
212 * Rate limited error output. Like DRM_ERROR() but won't flood the log.
214 * \param fmt printf() like format string.
215 * \param arg arguments
218 #define DRM_INFO(fmt, ...) kprintf("info: [" DRM_NAME "] " fmt , ##__VA_ARGS__)
220 #define DRM_INFO_ONCE(fmt, ...) \
221 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
226 * \param fmt printf() like format string.
227 * \param arg arguments
230 #define DRM_DEBUGBITS_DEBUG 0x1
231 #define DRM_DEBUGBITS_KMS 0x2
232 #define DRM_DEBUGBITS_FAILED_IOCTL 0x4
233 #define DRM_DEBUGBITS_VERBOSE 0x8
235 #define DRM_DEBUG(fmt, ...) do { \
236 if ((drm_debug & DRM_DEBUGBITS_DEBUG) != 0) \
237 kprintf("[" DRM_NAME ":pid%d:%s] " fmt, DRM_CURRENTPID, \
238 __func__ , ##__VA_ARGS__); \
241 #define DRM_DEBUG_VERBOSE(fmt, ...) do { \
242 if ((drm_debug & DRM_DEBUGBITS_VERBOSE) != 0) \
243 kprintf("[" DRM_NAME ":pid%d:%s] " fmt, DRM_CURRENTPID, \
244 __func__ , ##__VA_ARGS__); \
247 #define DRM_DEBUG_KMS(fmt, ...) do { \
248 if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \
249 kprintf("[" DRM_NAME ":KMS:pid%d:%s] " fmt, DRM_CURRENTPID,\
250 __func__ , ##__VA_ARGS__); \
253 #define DRM_DEBUG_DRIVER(fmt, ...) do { \
254 if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \
255 kprintf("[" DRM_NAME ":KMS:pid%d:%s] " fmt, DRM_CURRENTPID,\
256 __func__ , ##__VA_ARGS__); \
259 #define DRM_DEBUG_ATOMIC(fmt, args...) \
261 if (unlikely(drm_debug & DRM_UT_ATOMIC)) \
262 drm_ut_debug_printk(__func__, fmt, ##args); \
267 /***********************************************************************/
268 /** \name Internal types and structures */
271 #define DRM_GEM_MAPPING_MASK (3ULL << 62)
272 #define DRM_GEM_MAPPING_KEY (2ULL << 62) /* Non-canonical address form */
273 #define DRM_GEM_MAX_IDX 0x3fffff
274 #define DRM_GEM_MAPPING_IDX(o) (((o) >> 40) & DRM_GEM_MAX_IDX)
275 #define DRM_GEM_MAPPING_OFF(i) (((uint64_t)(i)) << 40)
276 #define DRM_GEM_MAPPING_MAPOFF(o) \
277 ((o) & ~(DRM_GEM_MAPPING_OFF(DRM_GEM_MAX_IDX) | DRM_GEM_MAPPING_KEY))
279 SYSCTL_DECL(_hw_drm);
281 #define DRM_MAX(a,b) ((a)>(b)?(a):(b))
283 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
285 #define __OS_HAS_AGP 1
287 #define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
288 #define DRM_DEV_UID UID_ROOT
289 #define DRM_DEV_GID GID_WHEEL
291 #define DRM_CURPROC curthread
292 #define DRM_STRUCTPROC struct thread
293 #define DRM_CURRENTPID (curproc != NULL ? curproc->p_pid : -1)
294 #define DRM_LOCK(dev) lockmgr(&(dev)->struct_mutex, LK_EXCLUSIVE)
295 #define DRM_UNLOCK(dev) lockmgr(&(dev)->struct_mutex, LK_RELEASE)
296 #define DRM_LOCK_SLEEP(dev, chan, flags, msg, timeout) \
297 (lksleep((chan), &(dev)->struct_mutex, (flags), (msg), (timeout)))
298 #if defined(INVARIANTS)
299 #define DRM_LOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) != 0);
300 #define DRM_UNLOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) == 0);
302 #define DRM_LOCK_ASSERT(d)
303 #define DRM_UNLOCK_ASSERT(d)
306 #define DRM_SYSCTL_HANDLER_ARGS (SYSCTL_HANDLER_ARGS)
308 typedef void irqreturn_t;
309 #define IRQ_HANDLED /* nothing */
310 #define IRQ_NONE /* nothing */
317 #define DRM_AGP_MEM struct agp_memory_info
319 #define drm_get_device_from_kdev(_kdev) (_kdev->si_drv1)
321 #define DRM_AGP_FIND_DEVICE() agp_find_device()
322 #define DRM_MTRR_WC MDF_WRITECOMBINE
324 #define LOCK_TEST_WITH_RETURN(dev, file_priv) \
326 if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) || \
327 dev->lock.file_priv != file_priv) { \
328 DRM_ERROR("%s called without lock held\n", \
334 /* Returns -errno to shared code */
335 #define DRM_WAIT_ON( ret, queue, timeout, condition ) \
336 for ( ret = 0 ; !ret && !(condition) ; ) { \
337 lwkt_serialize_enter(&dev->irq_lock); \
338 if (!(condition)) { \
339 tsleep_interlock(&(queue), PCATCH); \
340 lwkt_serialize_exit(&dev->irq_lock); \
341 ret = -tsleep(&(queue), PCATCH | PINTERLOCKED, \
342 "drmwtq", (timeout)); \
344 lwkt_serialize_exit(&dev->irq_lock); \
348 int vm_phys_fictitious_reg_range(vm_paddr_t start, vm_paddr_t end,
349 vm_memattr_t memattr);
350 void vm_phys_fictitious_unreg_range(vm_paddr_t start, vm_paddr_t end);
351 vm_page_t vm_phys_fictitious_to_vm_page(vm_paddr_t pa);
354 #define dev_dbg(dev, fmt, ...) do { \
355 if ((drm_debug& DRM_DEBUGBITS_KMS) != 0) { \
356 device_printf((dev), "debug: " fmt, ## __VA_ARGS__); \
360 typedef struct drm_pci_id_list
369 * Ioctl function type.
371 * \param inode device inode.
372 * \param file_priv DRM file private pointer.
373 * \param cmd command.
374 * \param arg argument.
376 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
377 struct drm_file *file_priv);
379 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
382 #define DRM_IOCTL_NR(n) ((n) & 0xff)
385 #define DRM_MASTER 0x2
386 #define DRM_ROOT_ONLY 0x4
387 #define DRM_CONTROL_ALLOW 0x8
388 #define DRM_UNLOCKED 0x10
389 #define DRM_RENDER_ALLOW 0x20
391 struct drm_ioctl_desc {
395 unsigned int cmd_drv;
400 * Creates a driver or general drm_ioctl_desc array entry for the given
401 * ioctl, for use by drm_ioctl().
403 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
404 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl}
406 typedef struct drm_magic_entry {
407 struct list_head head;
408 struct drm_hash_item hash_item;
409 struct drm_file *priv;
410 struct drm_magic_entry *next;
413 typedef struct drm_magic_head {
414 struct drm_magic_entry *head;
415 struct drm_magic_entry *tail;
418 typedef struct drm_buf {
419 int idx; /**< Index into master buflist */
420 int total; /**< Buffer size */
421 int order; /**< log-base-2(total) */
422 int used; /**< Amount of buffer in use (for DMA) */
423 unsigned long offset; /**< Byte offset (used internally) */
424 void *address; /**< Address of buffer */
425 unsigned long bus_address; /**< Bus address of buffer */
426 struct drm_buf *next; /**< Kernel-only: used for free list */
427 __volatile__ int waiting; /**< On kernel DMA queue */
428 __volatile__ int pending; /**< On hardware DMA queue */
429 struct drm_file *file_priv; /**< Private of holding file descr */
430 int context; /**< Kernel queue for this buffer */
431 int while_locked; /**< Dispatch this buffer while locked */
439 } list; /**< Which list we're on */
441 int dev_priv_size; /**< Size of buffer private storage */
442 void *dev_private; /**< Per-buffer private storage */
445 /** bufs is one longer than it has to be */
446 struct drm_waitlist {
447 int count; /**< Number of possible buffers */
448 struct drm_buf **bufs; /**< List of pointers to buffers */
449 struct drm_buf **rp; /**< Read pointer */
450 struct drm_buf **wp; /**< Write pointer */
451 struct drm_buf **end; /**< End pointer */
452 struct spinlock *read_lock;
453 struct spinlock *write_lock;
456 typedef struct drm_dma_handle {
464 typedef struct drm_buf_entry {
470 struct drm_dma_handle **seglist;
472 int low_mark; /**< Low water mark */
473 int high_mark; /**< High water mark */
476 /* Event queued up for userspace to read */
477 struct drm_pending_event {
478 struct drm_event *event;
479 struct list_head link;
480 struct drm_file *file_priv;
481 pid_t pid; /* pid of requester, no guarantee it's valid by the time
482 we deliver the event, for tracing only */
483 void (*destroy)(struct drm_pending_event *event);
486 /* initial implementaton using a linked list - todo hashtab */
487 struct drm_prime_file_private {
488 struct list_head head;
491 #endif /* DUMBBELL_WIP */
494 /** File private data */
497 struct drm_device *dev;
500 /* true when the client has asked us to expose stereo 3D mode flags */
503 * true if client understands CRTC primary planes and cursor planes
506 unsigned universal_planes:1;
507 /* true if client understands atomic properties */
513 unsigned long ioctl_count;
514 struct list_head lhead;
517 /** Mapping of mm object handles to object pointers. */
518 struct idr object_idr;
519 /** Lock for synchronization of access to object_idr. */
520 struct lock table_lock;
525 struct drm_master *masterp;
528 * fbs - List of framebuffers associated with this file.
530 * Protected by fbs_lock. Note that the fbs list holds a reference on
531 * the fb object to prevent it from untimely disappearing.
533 struct list_head fbs;
534 struct lock fbs_lock;
536 /** User-created blob properties; this retains a reference on the
538 struct list_head blobs;
540 wait_queue_head_t event_wait;
541 struct list_head event_list;
544 struct drm_prime_file_private prime;
550 struct drm_lock_data {
551 struct drm_hw_lock *hw_lock; /**< Hardware lock */
552 /** Private of lock holder's file (NULL=kernel) */
553 struct drm_file *file_priv;
554 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
555 unsigned long lock_time; /**< Time of last lock in jiffies */
558 /* This structure, in the struct drm_device, is always initialized while the
560 * is open. dev->dma_lock protects the incrementing of dev->buf_use, which
561 * when set marks that no further bufs may be allocated until device teardown
562 * occurs (when the last open of the device has closed). The high/low
563 * watermarks of bufs are only touched by the X Server, and thus not
564 * concurrently accessed, so no locking is needed.
566 typedef struct drm_device_dma {
568 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
569 int buf_count; /**< total number of buffers */
570 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
572 int page_count; /**< number of pages */
573 unsigned long *pagelist; /**< page list */
574 unsigned long byte_count;
576 _DRM_DMA_USE_AGP = 0x01,
577 _DRM_DMA_USE_SG = 0x02,
578 _DRM_DMA_USE_FB = 0x04,
579 _DRM_DMA_USE_PCI_RO = 0x08
584 typedef struct drm_sg_mem {
591 * Kernel side of a mapping
593 struct drm_local_map {
594 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
595 unsigned long size; /**< Requested physical size (bytes) */
596 enum drm_map_type type; /**< Type of memory to map */
597 enum drm_map_flags flags; /**< Flags */
598 void *handle; /**< User-space: "Handle" to pass to mmap() */
599 /**< Kernel-space: kernel-virtual address */
600 int mtrr; /**< MTRR slot used */
603 typedef struct drm_local_map drm_local_map_t;
608 struct drm_map_list {
609 struct list_head head; /**< list head */
610 struct drm_hash_item hash;
611 struct drm_local_map *map; /**< mapping */
613 struct drm_master *master;
614 struct drm_mm_node *file_offset_node; /**< fake offset */
618 * GEM specific mm private for tracking GEM objects
621 struct drm_vma_offset_manager vma_manager;
622 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */
623 struct drm_open_hash offset_hash; /**< User token hash table for maps */
624 struct unrhdr *idxunr;
628 #include "drm_crtc.h"
631 * struct drm_master - drm master structure
633 * @refcount: Refcount for this master object.
634 * @minor: Link back to minor char device we are master for. Immutable.
635 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
636 * @unique_len: Length of unique field. Protected by drm_global_mutex.
637 * @unique_size: Amount allocated. Protected by drm_global_mutex.
638 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex.
639 * @magicfree: List of used authentication tokens. Protected by struct_mutex.
640 * @lock: DRI lock information.
641 * @driver_priv: Pointer to driver-private information.
645 struct kref refcount; /* refcount for this master */
647 struct list_head head; /**< each minor contains a list of masters */
648 struct drm_minor *minor; /**< link back to minor we are a master for */
650 char *unique; /**< Unique identifier: e.g., busid */
651 int unique_len; /**< Length of unique field */
652 int unique_size; /**< amount allocated */
654 int blocked; /**< Blocked due to VC switch? */
656 struct drm_open_hash magiclist;
657 struct list_head magicfree;
658 struct drm_lock_data lock;
662 /* Size of ringbuffer for vblank timestamps. Just double-buffer
663 * in initial implementation.
665 #define DRM_VBLANKTIME_RBSIZE 2
667 /* Flags and return codes for get_vblank_timestamp() driver function. */
668 #define DRM_CALLED_FROM_VBLIRQ 1
669 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
670 #define DRM_VBLANKTIME_IN_VBLANK (1 << 1)
672 /* get_scanout_position() return flags */
673 #define DRM_SCANOUTPOS_VALID (1 << 0)
674 #define DRM_SCANOUTPOS_IN_VBLANK (1 << 1)
675 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
678 #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : (1ULL<<(n)) - 1)
681 #define upper_32_bits(n) ((u32)(((n) >> 16) >> 16))
684 * DRM driver structure. This structure represent the common code for
685 * a family of cards. There will one drm_device for each card present
689 int (*load)(struct drm_device *, unsigned long flags);
690 int (*use_msi)(struct drm_device *, unsigned long flags);
691 int (*firstopen)(struct drm_device *);
692 int (*open)(struct drm_device *, struct drm_file *);
693 void (*preclose)(struct drm_device *, struct drm_file *file_priv);
694 void (*postclose)(struct drm_device *, struct drm_file *);
695 void (*lastclose)(struct drm_device *);
696 int (*unload)(struct drm_device *);
697 void (*reclaim_buffers_locked)(struct drm_device *,
698 struct drm_file *file_priv);
699 int (*dma_ioctl)(struct drm_device *dev, void *data,
700 struct drm_file *file_priv);
701 void (*dma_ready)(struct drm_device *);
702 int (*dma_quiescent)(struct drm_device *);
703 int (*dma_flush_block_and_flush)(struct drm_device *, int context,
704 enum drm_lock_flags flags);
705 int (*dma_flush_unblock)(struct drm_device *, int context,
706 enum drm_lock_flags flags);
707 int (*context_ctor)(struct drm_device *dev, int context);
708 int (*context_dtor)(struct drm_device *dev, int context);
709 int (*kernel_context_switch)(struct drm_device *dev, int old,
711 int (*kernel_context_switch_unlock)(struct drm_device *dev);
712 void (*irq_preinstall)(struct drm_device *dev);
713 int (*irq_postinstall)(struct drm_device *dev);
714 void (*irq_uninstall)(struct drm_device *dev);
715 void (*irq_handler)(void *arg);
717 u32 (*get_vblank_counter)(struct drm_device *dev, int crtc);
718 int (*enable_vblank)(struct drm_device *dev, int crtc);
719 void (*disable_vblank)(struct drm_device *dev, int crtc);
722 * Called by vblank timestamping code.
724 * Return the current display scanout position from a crtc, and an
725 * optional accurate ktime_get timestamp of when position was measured.
727 * \param dev DRM device.
728 * \param crtc Id of the crtc to query.
729 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
730 * \param *vpos Target location for current vertical scanout position.
731 * \param *hpos Target location for current horizontal scanout position.
732 * \param *stime Target location for timestamp taken immediately before
733 * scanout position query. Can be NULL to skip timestamp.
734 * \param *etime Target location for timestamp taken immediately after
735 * scanout position query. Can be NULL to skip timestamp.
737 * Returns vpos as a positive number while in active scanout area.
738 * Returns vpos as a negative number inside vblank, counting the number
739 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
740 * until start of active scanout / end of vblank."
742 * \return Flags, or'ed together as follows:
744 * DRM_SCANOUTPOS_VALID = Query successful.
745 * DRM_SCANOUTPOS_INVBL = Inside vblank.
746 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
747 * this flag means that returned position may be offset by a constant
748 * but unknown small number of scanlines wrt. real scanout position.
751 int (*get_scanout_position) (struct drm_device *dev, int crtc,
753 int *vpos, int *hpos, ktime_t *stime,
756 int (*get_vblank_timestamp)(struct drm_device *dev, int crtc,
757 int *max_error, struct timeval *vblank_time,
760 void (*gem_free_object)(struct drm_gem_object *obj);
761 int (*gem_open_object)(struct drm_gem_object *, struct drm_file *);
762 void (*gem_close_object)(struct drm_gem_object *, struct drm_file *);
764 struct cdev_pager_ops *gem_pager_ops;
766 int (*dumb_create)(struct drm_file *file_priv,
767 struct drm_device *dev, struct drm_mode_create_dumb *args);
768 int (*dumb_map_offset)(struct drm_file *file_priv,
769 struct drm_device *dev, uint32_t handle, uint64_t *offset);
770 int (*dumb_destroy)(struct drm_file *file_priv,
771 struct drm_device *dev, uint32_t handle);
773 int (*sysctl_init)(struct drm_device *dev,
774 struct sysctl_ctx_list *ctx, struct sysctl_oid *top);
775 void (*sysctl_cleanup)(struct drm_device *dev);
777 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */
780 * Called by \c drm_device_is_agp. Typically used to determine if a
781 * card is really attached to AGP or not.
783 * \param dev DRM device handle
786 * One of three values is returned depending on whether or not the
787 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
788 * (return of 1), or may or may not be AGP (return of 2).
790 int (*device_is_agp) (struct drm_device * dev);
795 const char *name; /* Simple driver name */
796 const char *desc; /* Longer driver name */
797 const char *date; /* Date of last major changes. */
801 const struct drm_ioctl_desc *ioctls;
806 * Info file list entry. This structure represents a debugfs or proc file to
807 * be created by the drm core
809 struct drm_info_list {
810 const char *name; /** file name */
811 int (*show)(struct seq_file*, void*); /** show callback */
812 u32 driver_features; /**< Required driver features for this entry */
817 * debugfs node structure. This structure represents a debugfs file.
819 struct drm_info_node {
820 struct list_head list;
821 struct drm_minor *minor;
822 const struct drm_info_list *info_ent;
827 * DRM minor structure. This structure represents a drm minor number.
830 int index; /**< Minor device number */
831 int type; /**< Control or render */
832 device_t kdev; /**< OS device */
833 struct drm_device *dev;
835 struct drm_master *master; /* currently active master for this node */
836 struct list_head master_list;
837 struct drm_mode_group mode_group;
840 struct drm_pending_vblank_event {
841 struct drm_pending_event base;
843 struct drm_event_vblank event;
846 struct drm_sysctl_info {
847 struct sysctl_ctx_list ctx;
851 /* Length for the array of resource pointers for drm_get_resource_*. */
852 #define DRM_MAX_PCI_RESOURCE 6
854 struct drm_vblank_crtc {
855 struct drm_device *dev; /* pointer to the drm_device */
856 wait_queue_head_t queue; /**< VBLANK wait queue */
857 struct timer_list disable_timer; /* delayed disable timer */
859 /* vblank counter, protected by dev->vblank_time_lock for writes */
861 /* vblank timestamps, protected by dev->vblank_time_lock for writes */
862 struct timeval time[DRM_VBLANKTIME_RBSIZE];
864 atomic_t refcount; /* number of users of vblank interruptsper crtc */
865 u32 last; /* protected by dev->vbl_lock, used */
866 /* for wraparound handling */
867 u32 last_wait; /* Last vblank seqno waited per CRTC */
868 unsigned int inmodeset; /* Display driver is setting mode */
869 int crtc; /* crtc index */
870 bool enabled; /* so we don't call enable more than
875 * DRM device structure. This structure represent a complete card that
876 * may contain multiple heads.
879 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */
881 char *unique; /* Unique identifier: e.g., busid */
882 int unique_len; /* Length of unique field */
883 struct cdev *devnode; /* Device number for mknod */
884 int if_version; /* Highest interface version set */
886 int flags; /* Flags to open(2) */
889 struct spinlock dma_lock; /* protects dev->dma */
890 struct lwkt_serialize irq_lock; /* protects irq condition checks */
891 struct lock dev_lock; /* protects everything else */
895 struct lock struct_mutex; /**< For others */
896 struct lock master_mutex; /**< For drm_minor::master */
899 /** \name Usage Counters */
901 int open_count; /**< Outstanding files open, protected by drm_global_mutex. */
902 struct spinlock buf_lock; /**< For drm_device::buf_use and a few other things. */
903 int buf_use; /**< Buffers in use -- cannot alloc */
904 atomic_t buf_alloc; /**< Buffer allocation in progress */
908 /** \name Performance counters */
910 unsigned long counters;
911 enum drm_stat_type types[15];
916 struct drm_open_hash magiclist; /**< magic hash table */
917 struct list_head magicfree;
919 struct list_head filelist;
921 /** \name Memory management */
923 struct list_head maplist; /**< Linked list of regions */
924 int map_count; /**< Number of mappable regions */
925 struct drm_open_hash map_hash; /**< User token hash table for maps */
927 /** \name Context handle management */
929 struct list_head ctxlist; /**< Linked list of context handles */
930 int ctx_count; /**< Number of context handles */
931 struct lock ctxlist_mutex; /**< For ctxlist */
937 struct drm_lock_data lock; /* Information on hardware lock */
939 /* DMA queues (contexts) */
940 drm_device_dma_t *dma; /* Optional pointer for DMA support */
942 int irq; /* Interrupt used by board */
943 int irq_type; /* IRQ type (MSI enabled or not) */
944 int irqrid; /* Interrupt used by board */
945 struct resource *irqr; /* Resource for interrupt used by board */
946 void *irqh; /* Handle from bus_setup_intr */
948 /* Storage of resource pointers for drm_get_resource_* */
949 struct resource *pcir[DRM_MAX_PCI_RESOURCE];
950 int pcirid[DRM_MAX_PCI_RESOURCE];
957 /** \name Context support */
959 int irq_enabled; /**< True if irq handler is enabled */
960 __volatile__ long context_flag; /**< Context swapping flag */
961 __volatile__ long interrupt_flag; /**< Interruption handler flag */
962 __volatile__ long dma_flag; /**< DMA dispatch flag */
963 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
964 int last_checked; /**< Last context checked for DMA */
965 int last_context; /**< Last current context */
966 unsigned long last_switch; /**< jiffies at last context switch */
969 /** \name VBLANK IRQ support */
973 * At load time, disabling the vblank interrupt won't be allowed since
974 * old clients may not call the modeset ioctl and therefore misbehave.
975 * Once the modeset ioctl *has* been called though, we can safely
976 * disable them when unused.
978 bool vblank_disable_allowed;
981 * If true, vblank interrupt will be disabled immediately when the
982 * refcount drops to zero, as opposed to via the vblank disable
984 * This can be set to true it the hardware has a working vblank
985 * counter and the driver uses drm_vblank_on() and drm_vblank_off()
988 bool vblank_disable_immediate;
990 /* array of size num_crtcs */
991 struct drm_vblank_crtc *vblank;
993 struct lock vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
994 struct lock vbl_lock;
995 struct timer_list vblank_disable_timer;
997 u32 max_vblank_count; /**< size of vblank counter register */
1002 struct list_head vblank_event_list;
1003 struct lock event_lock;
1007 struct sigio *buf_sigio; /* Processes waiting for SIGIO */
1009 /* Sysctl support */
1010 struct drm_sysctl_info *sysctl;
1013 drm_sg_mem_t *sg; /* Scatter gather memory */
1014 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1016 unsigned long *ctx_bitmap;
1023 struct drm_agp_head *agp; /**< AGP data */
1025 struct device *dev; /**< Device structure */
1026 struct pci_dev *pdev; /**< PCI device structure */
1028 struct drm_driver *driver;
1029 struct drm_local_map *agp_buffer_map;
1030 unsigned int agp_buffer_token;
1031 struct drm_minor *control; /**< Control node for card */
1032 struct drm_minor *primary; /**< render type primary screen head */
1034 struct drm_mode_config mode_config; /**< Current mode config */
1036 /** \name GEM information */
1038 struct lock object_name_lock;
1039 struct idr object_name_idr;
1043 void *sysctl_private;
1044 char busid_str[128];
1047 int switch_power_state;
1049 atomic_t unplugged; /* device has been unplugged or gone away */
1052 #define DRM_SWITCH_POWER_ON 0
1053 #define DRM_SWITCH_POWER_OFF 1
1054 #define DRM_SWITCH_POWER_CHANGING 2
1055 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3
1057 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1060 return ((dev->driver->driver_features & feature) ? 1 : 0);
1063 static inline void drm_device_set_unplugged(struct drm_device *dev)
1066 atomic_set(&dev->unplugged, 1);
1069 static inline int drm_device_is_unplugged(struct drm_device *dev)
1071 int ret = atomic_read(&dev->unplugged);
1076 static inline bool drm_is_primary_client(const struct drm_file *file_priv)
1078 return 0 /* file_priv->minor->type == DRM_MINOR_LEGACY */;
1082 * drm_is_master() - Check whether a DRM open-file is DRM-Master
1083 * @file: DRM open-file context
1085 * This checks whether a DRM open-file context is owner of the master context
1086 * attached to it. If a file owns a master context, it's called DRM-Master.
1087 * Per DRM device, only one such file can be DRM-Master at a time.
1089 * Returns: True if the file is DRM-Master, otherwise false.
1091 static inline bool drm_is_master(const struct drm_file *file)
1094 return file->master && file->master == file->minor->master;
1100 /******************************************************************/
1101 /** \name Internal function definitions */
1105 static inline int drm_core_has_AGP(struct drm_device *dev)
1107 return drm_core_check_feature(dev, DRIVER_USE_AGP);
1110 #define drm_core_has_AGP(dev) (0)
1113 extern int drm_notyet_flag;
1114 extern unsigned int drm_rnodes;
1115 extern unsigned int drm_universal_planes;
1117 extern int drm_vblank_offdelay;
1118 extern unsigned int drm_timestamp_precision;
1120 /* Driver support (drm_drv.h) */
1121 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist);
1122 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist);
1123 int drm_create_cdevs(device_t kdev);
1124 d_ioctl_t drm_ioctl;
1125 extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
1127 /* Device support (drm_fops.h) */
1129 d_close_t drm_close;
1131 d_kqfilter_t drm_kqfilter;
1132 int drm_release(device_t kdev);
1135 d_mmap_single_t drm_mmap_single;
1137 void drm_cdevpriv_dtor(void *cd);
1139 int drm_add_busid_modesetting(struct drm_device *dev,
1140 struct sysctl_ctx_list *ctx, struct sysctl_oid *top);
1142 /* File operations helpers (drm_fops.c) */
1143 extern int drm_open_helper(struct cdev *kdev, int flags, int fmt,
1145 struct drm_device *dev,
1147 extern struct drm_file *drm_find_file_by_proc(struct drm_device *dev,
1151 extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
1152 struct drm_file *file_priv, uint32_t handle, uint32_t flags,
1154 extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
1155 struct drm_file *file_priv, int prime_fd, uint32_t *handle);
1157 extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
1158 struct drm_file *file_priv);
1159 extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data,
1160 struct drm_file *file_priv);
1162 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, vm_page_t *pages,
1163 dma_addr_t *addrs, int max_pages);
1164 #endif /* DUMBBELL_WIP */
1165 extern struct sg_table *drm_prime_pages_to_sg(vm_page_t *pages, int nr_pages);
1166 extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
1169 void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv);
1170 void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv);
1171 int drm_prime_add_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t handle);
1172 int drm_prime_lookup_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t *handle);
1173 void drm_prime_remove_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf);
1175 int drm_prime_add_dma_buf(struct drm_device *dev, struct drm_gem_object *obj);
1176 int drm_prime_lookup_obj(struct drm_device *dev, struct dma_buf *buf,
1177 struct drm_gem_object **obj);
1178 #endif /* DUMBBELL_WIP */
1180 int drm_mtrr_add(unsigned long offset, size_t size, int flags);
1181 int drm_mtrr_del(int handle, unsigned long offset, size_t size, int flags);
1183 /* Locking IOCTL support (drm_lock.c) */
1184 int drm_lock_take(struct drm_lock_data *lock_data,
1185 unsigned int context);
1186 int drm_lock_transfer(struct drm_lock_data *lock_data,
1187 unsigned int context);
1188 int drm_lock_free(struct drm_lock_data *lock_data,
1189 unsigned int context);
1192 * These are exported to drivers so that they can implement fencing using
1193 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1196 unsigned long drm_get_resource_start(struct drm_device *dev,
1197 unsigned int resource);
1198 unsigned long drm_get_resource_len(struct drm_device *dev,
1199 unsigned int resource);
1201 /* IRQ support (drm_irq.h) */
1202 extern int drm_irq_install(struct drm_device *dev, int irq);
1203 int drm_irq_uninstall(struct drm_device *dev);
1204 void drm_driver_irq_preinstall(struct drm_device *dev);
1205 void drm_driver_irq_postinstall(struct drm_device *dev);
1206 void drm_driver_irq_uninstall(struct drm_device *dev);
1208 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1209 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1210 struct drm_file *filp);
1211 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1212 extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc);
1213 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1214 struct timeval *vblanktime);
1215 extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
1216 struct drm_pending_vblank_event *e);
1217 extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc,
1218 struct drm_pending_vblank_event *e);
1219 extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1220 extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc);
1221 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1222 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1223 extern int drm_crtc_vblank_get(struct drm_crtc *crtc);
1224 extern void drm_crtc_vblank_put(struct drm_crtc *crtc);
1225 extern void drm_wait_one_vblank(struct drm_device *dev, int crtc);
1226 extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc);
1227 extern void drm_vblank_off(struct drm_device *dev, int crtc);
1228 extern void drm_vblank_on(struct drm_device *dev, int crtc);
1229 extern void drm_crtc_vblank_off(struct drm_crtc *crtc);
1230 extern void drm_crtc_vblank_reset(struct drm_crtc *crtc);
1231 extern void drm_crtc_vblank_on(struct drm_crtc *crtc);
1232 extern void drm_vblank_cleanup(struct drm_device *dev);
1234 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1235 int crtc, int *max_error,
1236 struct timeval *vblank_time,
1238 const struct drm_crtc *refcrtc,
1239 const struct drm_display_mode *mode);
1240 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc,
1241 const struct drm_display_mode *mode);
1244 * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC
1245 * @crtc: which CRTC's vblank waitqueue to retrieve
1247 * This function returns a pointer to the vblank waitqueue for the CRTC.
1248 * Drivers can use this to implement vblank waits using wait_event() & co.
1250 static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc)
1252 return &crtc->dev->vblank[drm_crtc_index(crtc)].queue;
1255 /* Modesetting support */
1256 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1257 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1259 /* AGP/GART support (drm_agpsupport.h) */
1261 #include <drm/drm_agpsupport.h>
1263 /* sysctl support (drm_sysctl.h) */
1264 extern int drm_sysctl_init(struct drm_device *dev);
1265 extern int drm_sysctl_cleanup(struct drm_device *dev);
1267 /* Locking IOCTL support (drm_drv.c) */
1268 int drm_lock(struct drm_device *dev, void *data,
1269 struct drm_file *file_priv);
1270 int drm_unlock(struct drm_device *dev, void *data,
1271 struct drm_file *file_priv);
1272 int drm_setversion(struct drm_device *dev, void *data,
1273 struct drm_file *file_priv);
1276 * These are exported to drivers so that they can implement fencing using
1277 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1280 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1282 /* Misc. IOCTL support (drm_ioctl.c) */
1283 int drm_noop(struct drm_device *dev, void *data,
1284 struct drm_file *file_priv);
1286 /* Cache management (drm_cache.c) */
1287 void drm_clflush_pages(struct vm_page *pages[], unsigned long num_pages);
1288 void drm_clflush_sg(struct sg_table *st);
1289 void drm_clflush_virt_range(void *addr, unsigned long length);
1291 /* DMA support (drm_dma.c) */
1292 int drm_dma(struct drm_device *dev, void *data, struct drm_file *file_priv);
1294 /* Stub support (drm_stub.h) */
1296 extern void drm_put_dev(struct drm_device *dev);
1297 extern void drm_unplug_dev(struct drm_device *dev);
1298 extern unsigned int drm_debug;
1299 extern bool drm_atomic;
1301 /* Scatter Gather Support (drm_scatter.c) */
1302 int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1303 struct drm_file *file_priv);
1304 int drm_sg_free(struct drm_device *dev, void *data,
1305 struct drm_file *file_priv);
1307 /* consistent PCI memory functions (drm_pci.c) */
1308 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1310 void drm_pci_free(struct drm_device *dev, drm_dma_handle_t *dmah);
1312 /* sysfs support (drm_sysfs.c) */
1313 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1315 int drm_gem_mmap_single(struct drm_device *dev, vm_ooffset_t *offset,
1316 vm_size_t size, struct vm_object **obj_res, int nprot);
1317 void drm_gem_pager_dtr(void *obj);
1319 struct ttm_bo_device;
1320 int ttm_bo_mmap_single(struct ttm_bo_device *bdev, vm_ooffset_t *offset,
1321 vm_size_t size, struct vm_object **obj_res, int nprot);
1322 struct ttm_buffer_object;
1323 void ttm_bo_release_mmap(struct ttm_buffer_object *bo);
1325 void drm_device_lock_mtx(struct drm_device *dev);
1326 void drm_device_unlock_mtx(struct drm_device *dev);
1327 int drm_device_sleep_mtx(struct drm_device *dev, void *chan, int flags,
1328 const char *msg, int timeout);
1329 void drm_device_assert_mtx_locked(struct drm_device *dev);
1330 void drm_device_assert_mtx_unlocked(struct drm_device *dev);
1332 void drm_device_lock_struct(struct drm_device *dev);
1333 void drm_device_unlock_struct(struct drm_device *dev);
1334 int drm_device_sleep_struct(struct drm_device *dev, void *chan, int flags,
1335 const char *msg, int timeout);
1336 void drm_device_assert_struct_locked(struct drm_device *dev);
1337 void drm_device_assert_struct_unlocked(struct drm_device *dev);
1339 void drm_compat_locking_init(struct drm_device *dev);
1340 void drm_sleep_locking_init(struct drm_device *dev);
1342 /* XXX glue logic, should be done in drm_pci_init(), pending drm update */
1343 void drm_init_pdev(struct device *dev, struct pci_dev **pdev);
1344 void drm_fini_pdev(struct pci_dev **pdev);
1346 /* Inline replacements for drm_alloc and friends */
1347 static __inline__ void *
1348 drm_alloc(size_t size, struct malloc_type *area)
1350 return kmalloc(size, area, M_WAITOK | M_NULLOK);
1353 static __inline__ void *
1354 drm_calloc(size_t nmemb, size_t size, struct malloc_type *area)
1356 return kmalloc(size * nmemb, area, M_WAITOK | M_NULLOK | M_ZERO);
1359 static __inline__ void
1360 drm_free(void *pt, struct malloc_type *area)
1362 /* kfree is special!!! */
1367 static __inline__ struct drm_local_map *
1368 drm_core_findmap(struct drm_device *dev, unsigned long offset)
1370 struct drm_map_list *_entry;
1372 list_for_each_entry(_entry, &dev->maplist, head) {
1373 if (offset == (unsigned long)_entry->map->handle)
1379 static __inline__ void drm_core_dropmap(struct drm_map *map)
1383 #include <drm/drm_mem_util.h>
1385 struct drm_device *drm_dev_alloc(struct drm_driver *driver,
1386 struct device *parent);
1387 void drm_dev_ref(struct drm_device *dev);
1388 void drm_dev_unref(struct drm_device *dev);
1389 int drm_dev_register(struct drm_device *dev, unsigned long flags);
1390 void drm_dev_unregister(struct drm_device *dev);
1391 int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...);
1393 /* FreeBSD compatibility macros */
1394 #define VM_OBJECT_WLOCK(object) VM_OBJECT_LOCK(object)
1395 #define VM_OBJECT_WUNLOCK(object) VM_OBJECT_UNLOCK(object)
1397 #define DRM_PCIE_SPEED_25 1
1398 #define DRM_PCIE_SPEED_50 2
1399 #define DRM_PCIE_SPEED_80 4
1401 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
1404 #define drm_can_sleep() (HZ & 1)
1406 #endif /* __KERNEL__ */
1407 #endif /* _DRM_P_H_ */