1 /**
2 * \file drmP.h
3 * Private header for Direct Rendering Manager
4 *
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
7 */
8
9 /*
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.
14 *
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:
21 *
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
24 * Software.
25 *
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.
33 */
34
35 #ifndef _DRM_P_H_
36 #define _DRM_P_H_
37
38 #ifdef __KERNEL__
39 #ifdef __alpha__
40 /* add include of current.h so that "current" is defined
41 * before static inline funcs in wait.h. Doing this so we
42 * can build the DRM (part of PI DRI). 4/21/2000 S + B */
43 #include <asm/current.h>
44 #endif /* __alpha__ */
45 #include <linux/kernel.h>
46 #include <linux/kref.h>
47 #include <linux/miscdevice.h>
48 #include <linux/fs.h>
49 #include <linux/init.h>
50 #include <linux/file.h>
51 #include <linux/platform_device.h>
52 #include <linux/pci.h>
53 #include <linux/jiffies.h>
54 #include <linux/dma-mapping.h>
55 #include <linux/mm.h>
56 #include <linux/cdev.h>
57 #include <linux/mutex.h>
58 #include <linux/io.h>
59 #include <linux/slab.h>
60 #include <linux/ratelimit.h>
61 #if defined(__alpha__) || defined(__powerpc__)
62 #include <asm/pgtable.h> /* For pte_wrprotect */
63 #endif
64 #include <asm/mman.h>
65 #include <asm/uaccess.h>
66 #include <linux/types.h>
67 #include <linux/agp_backend.h>
68 #include <linux/workqueue.h>
69 #include <linux/poll.h>
70 #include <linux/atomic.h>
71 #include <linux/uidgid.h>
72 #include <linux/kref.h>
73 #include <linux/pm.h>
74 #include <linux/timer.h>
75 #include <linux/ktime.h>
76 #include <asm/pgalloc.h>
77 #include <drm/drm.h>
78 #include <drm/drm_sarea.h>
79 #include <asm/barrier.h>
80 #include <drm/drm_vma_manager.h>
81
82 #include <linux/idr.h>
83
84 #ifndef __NetBSD__
85 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
86 #endif
87
88 struct module;
89
90 struct drm_file;
91 struct drm_device;
92
93 struct device_node;
94 struct videomode;
95
96 #ifdef __NetBSD__
97 #include <drm/drm_os_netbsd.h>
98 #else
99 #include <drm/drm_os_linux.h>
100 #endif
101 #include <drm/drm_hashtab.h>
102 #include <drm/drm_mm.h>
103
104 /*
105 * 4 debug categories are defined:
106 *
107 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...
108 * This is the category used by the DRM_DEBUG() macro.
109 *
110 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...
111 * This is the category used by the DRM_DEBUG_DRIVER() macro.
112 *
113 * KMS: used in the modesetting code.
114 * This is the category used by the DRM_DEBUG_KMS() macro.
115 *
116 * PRIME: used in the prime code.
117 * This is the category used by the DRM_DEBUG_PRIME() macro.
118 *
119 * Enabling verbose debug messages is done through the drm.debug parameter,
120 * each category being enabled by a bit.
121 *
122 * drm.debug=0x1 will enable CORE messages
123 * drm.debug=0x2 will enable DRIVER messages
124 * drm.debug=0x3 will enable CORE and DRIVER messages
125 * ...
126 * drm.debug=0xf will enable all messages
127 *
128 * An interesting feature is that it's possible to enable verbose logging at
129 * run-time by echoing the debug value in its sysfs node:
130 * # echo 0xf > /sys/module/drm/parameters/debug
131 */
132 #define DRM_UT_CORE 0x01
133 #define DRM_UT_DRIVER 0x02
134 #define DRM_UT_KMS 0x04
135 #define DRM_UT_PRIME 0x08
136
137 extern __printf(2, 3)
138 void drm_ut_debug_printk(const char *function_name,
139 const char *format, ...);
140 extern __printf(2, 3)
141 int drm_err(const char *func, const char *format, ...);
142
143 /***********************************************************************/
144 /** \name DRM template customization defaults */
145 /*@{*/
146
147 /* driver capabilities and requirements mask */
148 #define DRIVER_USE_AGP 0x1
149 #define DRIVER_PCI_DMA 0x8
150 #define DRIVER_SG 0x10
151 #define DRIVER_HAVE_DMA 0x20
152 #define DRIVER_HAVE_IRQ 0x40
153 #define DRIVER_IRQ_SHARED 0x80
154 #define DRIVER_GEM 0x1000
155 #define DRIVER_MODESET 0x2000
156 #define DRIVER_PRIME 0x4000
157 #define DRIVER_RENDER 0x8000
158
159 #define DRIVER_BUS_PCI 0x1
160 #define DRIVER_BUS_PLATFORM 0x2
161 #define DRIVER_BUS_USB 0x3
162 #define DRIVER_BUS_HOST1X 0x4
163
164 /***********************************************************************/
165 /** \name Begin the DRM... */
166 /*@{*/
167
168 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
169 also include looping detection. */
170
171 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
172 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
173 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
174
175 #define DRM_MAP_HASH_OFFSET 0x10000000
176
177 /*@}*/
178
179 /***********************************************************************/
180 /** \name Macros to make printk easier */
181 /*@{*/
182
183 /**
184 * Error output.
185 *
186 * \param fmt printf() like format string.
187 * \param arg arguments
188 */
189 #define DRM_ERROR(fmt, ...) \
190 drm_err(__func__, fmt, ##__VA_ARGS__)
191
192
193 #ifdef __NetBSD__
194 /* XXX Use device_printf, with a device. */
195 #define DRM_INFO(fmt, ...) \
196 printf("drm: " fmt, ##__VA_ARGS__)
197 #endif
198
199 /**
200 * Rate limited error output. Like DRM_ERROR() but won't flood the log.
201 *
202 * \param fmt printf() like format string.
203 * \param arg arguments
204 */
205 #define DRM_ERROR_RATELIMITED(fmt, ...) \
206 ({ \
207 static DEFINE_RATELIMIT_STATE(_rs, \
208 DEFAULT_RATELIMIT_INTERVAL, \
209 DEFAULT_RATELIMIT_BURST); \
210 \
211 if (__ratelimit(&_rs)) \
212 drm_err(__func__, fmt, ##__VA_ARGS__); \
213 })
214
215 #ifndef __NetBSD__
216 #define DRM_INFO(fmt, ...) \
217 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
218 #endif
219
220 #define DRM_INFO_ONCE(fmt, ...) \
221 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
222
223 /**
224 * Debug output.
225 *
226 * \param fmt printf() like format string.
227 * \param arg arguments
228 */
229 #if DRM_DEBUG_CODE
230 #define DRM_DEBUG(fmt, args...) \
231 do { \
232 if (unlikely(drm_debug & DRM_UT_CORE)) \
233 drm_ut_debug_printk(__func__, fmt, ##args); \
234 } while (0)
235
236 #define DRM_DEBUG_DRIVER(fmt, args...) \
237 do { \
238 if (unlikely(drm_debug & DRM_UT_DRIVER)) \
239 drm_ut_debug_printk(__func__, fmt, ##args); \
240 } while (0)
241 #define DRM_DEBUG_KMS(fmt, args...) \
242 do { \
243 if (unlikely(drm_debug & DRM_UT_KMS)) \
244 drm_ut_debug_printk(__func__, fmt, ##args); \
245 } while (0)
246 #define DRM_DEBUG_PRIME(fmt, args...) \
247 do { \
248 if (unlikely(drm_debug & DRM_UT_PRIME)) \
249 drm_ut_debug_printk(__func__, fmt, ##args); \
250 } while (0)
251 #else
252 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
253 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
254 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
255 #define DRM_DEBUG(fmt, arg...) do { } while (0)
256 #endif
257
258 /*@}*/
259
260 /***********************************************************************/
261 /** \name Internal types and structures */
262 /*@{*/
263
264 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
265
266 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
267
268 /**
269 * Test that the hardware lock is held by the caller, returning otherwise.
270 *
271 * \param dev DRM device.
272 * \param filp file pointer of the caller.
273 */
274 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
275 do { \
276 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
277 _file_priv->master->lock.file_priv != _file_priv) { \
278 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
279 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
280 _file_priv->master->lock.file_priv, _file_priv); \
281 return -EINVAL; \
282 } \
283 } while (0)
284
285 /**
286 * Ioctl function type.
287 *
288 * \param inode device inode.
289 * \param file_priv DRM file private pointer.
290 * \param cmd command.
291 * \param arg argument.
292 */
293 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
294 struct drm_file *file_priv);
295
296 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
297 unsigned long arg);
298
299 #ifdef __NetBSD__
300 /* XXX Kludge...is there a better way to do this? */
301 #define DRM_IOCTL_NR(n) \
302 (IOCBASECMD(n) &~ (IOC_DIRMASK | (IOCGROUP(n) << IOCGROUP_SHIFT)))
303 #define DRM_MAJOR cdevsw_lookup_major(&drm_cdevsw)
304 #else
305 #define DRM_IOCTL_NR(n) _IOC_NR(n)
306 #define DRM_MAJOR 226
307 #endif
308
309 #define DRM_AUTH 0x1
310 #define DRM_MASTER 0x2
311 #define DRM_ROOT_ONLY 0x4
312 #define DRM_CONTROL_ALLOW 0x8
313 #define DRM_UNLOCKED 0x10
314 #define DRM_RENDER_ALLOW 0x20
315
316 struct drm_ioctl_desc {
317 unsigned int cmd;
318 int flags;
319 drm_ioctl_t *func;
320 unsigned int cmd_drv;
321 const char *name;
322 };
323
324 /**
325 * Creates a driver or general drm_ioctl_desc array entry for the given
326 * ioctl, for use by drm_ioctl().
327 */
328
329 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
330 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
331
332 struct drm_magic_entry {
333 struct list_head head;
334 struct drm_hash_item hash_item;
335 struct drm_file *priv;
336 };
337
338 struct drm_vma_entry {
339 struct list_head head;
340 struct vm_area_struct *vma;
341 pid_t pid;
342 };
343
344 /**
345 * DMA buffer.
346 */
347 struct drm_buf {
348 int idx; /**< Index into master buflist */
349 int total; /**< Buffer size */
350 int order; /**< log-base-2(total) */
351 int used; /**< Amount of buffer in use (for DMA) */
352 unsigned long offset; /**< Byte offset (used internally) */
353 void *address; /**< Address of buffer */
354 unsigned long bus_address; /**< Bus address of buffer */
355 struct drm_buf *next; /**< Kernel-only: used for free list */
356 __volatile__ int waiting; /**< On kernel DMA queue */
357 __volatile__ int pending; /**< On hardware DMA queue */
358 struct drm_file *file_priv; /**< Private of holding file descr */
359 int context; /**< Kernel queue for this buffer */
360 int while_locked; /**< Dispatch this buffer while locked */
361 enum {
362 DRM_LIST_NONE = 0,
363 DRM_LIST_FREE = 1,
364 DRM_LIST_WAIT = 2,
365 DRM_LIST_PEND = 3,
366 DRM_LIST_PRIO = 4,
367 DRM_LIST_RECLAIM = 5
368 } list; /**< Which list we're on */
369
370 int dev_priv_size; /**< Size of buffer private storage */
371 void *dev_private; /**< Per-buffer private storage */
372 };
373
374 /** bufs is one longer than it has to be */
375 struct drm_waitlist {
376 int count; /**< Number of possible buffers */
377 struct drm_buf **bufs; /**< List of pointers to buffers */
378 struct drm_buf **rp; /**< Read pointer */
379 struct drm_buf **wp; /**< Write pointer */
380 struct drm_buf **end; /**< End pointer */
381 spinlock_t read_lock;
382 spinlock_t write_lock;
383 };
384
385 struct drm_freelist {
386 #ifndef __NetBSD__
387 int initialized; /**< Freelist in use */
388 atomic_t count; /**< Number of free buffers */
389 struct drm_buf *next; /**< End pointer */
390
391 #ifdef __NetBSD__
392 drm_waitqueue_t waiting; /**< Processes waiting on free bufs */
393 #else
394 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
395 #endif
396 #endif
397 int low_mark; /**< Low water mark */
398 int high_mark; /**< High water mark */
399 #ifndef __NetBSD__
400 atomic_t wfh; /**< If waiting for high mark */
401 spinlock_t lock;
402 #endif
403 };
404
405 typedef struct drm_dma_handle {
406 dma_addr_t busaddr;
407 void *vaddr;
408 size_t size;
409 #ifdef __NetBSD__
410 bus_dma_tag_t dmah_tag;
411 bus_dmamap_t dmah_map;
412 bus_dma_segment_t dmah_seg;
413 #endif
414 } drm_dma_handle_t;
415
416 /**
417 * Buffer entry. There is one of this for each buffer size order.
418 */
419 struct drm_buf_entry {
420 int buf_size; /**< size */
421 int buf_count; /**< number of buffers */
422 struct drm_buf *buflist; /**< buffer list */
423 int seg_count;
424 int page_order;
425 struct drm_dma_handle **seglist;
426
427 struct drm_freelist freelist;
428 };
429
430 /* Event queued up for userspace to read */
431 struct drm_pending_event {
432 struct drm_event *event;
433 struct list_head link;
434 struct drm_file *file_priv;
435 pid_t pid; /* pid of requester, no guarantee it's valid by the time
436 we deliver the event, for tracing only */
437 void (*destroy)(struct drm_pending_event *event);
438 };
439
440 /* initial implementaton using a linked list - todo hashtab */
441 struct drm_prime_file_private {
442 struct list_head head;
443 struct mutex lock;
444 };
445
446 /** File private data */
447 struct drm_file {
448 unsigned always_authenticated :1;
449 unsigned authenticated :1;
450 /* Whether we're master for a minor. Protected by master_mutex */
451 unsigned is_master :1;
452 /* true when the client has asked us to expose stereo 3D mode flags */
453 unsigned stereo_allowed :1;
454 /*
455 * true if client understands CRTC primary planes and cursor planes
456 * in the plane list
457 */
458 unsigned universal_planes:1;
459
460 #ifndef __NetBSD__
461 struct pid *pid;
462 kuid_t uid;
463 #endif
464 drm_magic_t magic;
465 struct list_head lhead;
466 struct drm_minor *minor;
467 unsigned long lock_count;
468
469 /** Mapping of mm object handles to object pointers. */
470 struct idr object_idr;
471 /** Lock for synchronization of access to object_idr. */
472 spinlock_t table_lock;
473
474 struct file *filp;
475 void *driver_priv;
476
477 struct drm_master *master; /* master this node is currently associated with
478 N.B. not always minor->master */
479 /**
480 * fbs - List of framebuffers associated with this file.
481 *
482 * Protected by fbs_lock. Note that the fbs list holds a reference on
483 * the fb object to prevent it from untimely disappearing.
484 */
485 struct list_head fbs;
486 struct mutex fbs_lock;
487
488 #ifdef __NetBSD__
489 drm_waitqueue_t event_wait;
490 struct selinfo event_selq;
491 #else
492 wait_queue_head_t event_wait;
493 #endif
494 struct list_head event_list;
495 int event_space;
496
497 struct drm_prime_file_private prime;
498 };
499
500 /** Wait queue */
501 struct drm_queue {
502 atomic_t use_count; /**< Outstanding uses (+1) */
503 atomic_t finalization; /**< Finalization in progress */
504 atomic_t block_count; /**< Count of processes waiting */
505 atomic_t block_read; /**< Queue blocked for reads */
506 #ifdef __NetBSD__
507 drm_waitqueue_t read_queue; /**< Processes waiting on block_read */
508 #else
509 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
510 #endif
511 atomic_t block_write; /**< Queue blocked for writes */
512 #ifdef __NetBSD__
513 drm_waitqueue_t write_queue; /**< Processes waiting on block_write */
514 #else
515 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
516 #endif
517 atomic_t total_queued; /**< Total queued statistic */
518 atomic_t total_flushed; /**< Total flushes statistic */
519 atomic_t total_locks; /**< Total locks statistics */
520 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
521 struct drm_waitlist waitlist; /**< Pending buffers */
522 #ifdef __NetBSD__
523 drm_waitqueue_t flush_queue; /**< Processes waiting until flush */
524 #else
525 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
526 #endif
527 };
528
529 /**
530 * Lock data.
531 */
532 struct drm_lock_data {
533 struct drm_hw_lock *hw_lock; /**< Hardware lock */
534 /** Private of lock holder's file (NULL=kernel) */
535 struct drm_file *file_priv;
536 #ifdef __NetBSD__
537 drm_waitqueue_t lock_queue; /**< Queue of blocked processes */
538 #else
539 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
540 #endif
541 unsigned long lock_time; /**< Time of last lock in jiffies */
542 spinlock_t spinlock;
543 uint32_t kernel_waiters;
544 uint32_t user_waiters;
545 int idle_has_lock;
546 };
547
548 /**
549 * DMA data.
550 */
551 struct drm_device_dma {
552
553 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
554 int buf_count; /**< total number of buffers */
555 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
556 int seg_count;
557 int page_count; /**< number of pages */
558 unsigned long *pagelist; /**< page list */
559 unsigned long byte_count;
560 enum {
561 _DRM_DMA_USE_AGP = 0x01,
562 _DRM_DMA_USE_SG = 0x02,
563 _DRM_DMA_USE_FB = 0x04,
564 _DRM_DMA_USE_PCI_RO = 0x08
565 } flags;
566
567 };
568
569 /**
570 * AGP memory entry. Stored as a doubly linked list.
571 */
572 struct drm_agp_mem {
573 unsigned long handle; /**< handle */
574 struct agp_memory *memory;
575 unsigned long bound; /**< address */
576 int pages;
577 struct list_head head;
578 };
579
580 /**
581 * AGP data.
582 *
583 * \sa drm_agp_init() and drm_device::agp.
584 */
585 struct drm_agp_head {
586 struct agp_kern_info agp_info; /**< AGP device information */
587 struct list_head memory;
588 unsigned long mode; /**< AGP mode */
589 struct agp_bridge_data *bridge;
590 int enabled; /**< whether the AGP bus as been enabled */
591 int acquired; /**< whether the AGP device has been acquired */
592 unsigned long base;
593 int agp_mtrr;
594 int cant_use_aperture;
595 unsigned long page_mask;
596 };
597
598 /**
599 * Scatter-gather memory.
600 */
601 struct drm_sg_mem {
602 unsigned long handle;
603 void *virtual;
604 #ifdef __NetBSD__
605 size_t sg_size;
606 bus_dma_tag_t sg_tag;
607 bus_dmamap_t sg_map;
608 unsigned int sg_nsegs;
609 unsigned int sg_nsegs_max;
610 bus_dma_segment_t sg_segs[];
611 #else
612 int pages;
613 struct page **pagelist;
614 dma_addr_t *busaddr;
615 #endif
616 };
617
618 struct drm_sigdata {
619 int context;
620 struct drm_hw_lock *lock;
621 };
622
623 #ifdef __NetBSD__
624 /*
625 * XXX Remember: memory mappings only. bm_flags must include
626 * BUS_SPACE_MAP_LINEAR.
627 */
628 struct drm_bus_map {
629 bus_addr_t bm_base;
630 bus_size_t bm_size;
631 bus_space_handle_t bm_bsh;
632 int bm_flags;
633 };
634 #endif
635
636 /**
637 * Kernel side of a mapping
638 */
639 struct drm_local_map {
640 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
641 unsigned long size; /**< Requested physical size (bytes) */
642 enum drm_map_type type; /**< Type of memory to map */
643 enum drm_map_flags flags; /**< Flags */
644 void *handle; /**< User-space: "Handle" to pass to mmap() */
645 /**< Kernel-space: kernel-virtual address */
646 int mtrr; /**< MTRR slot used */
647
648 #ifdef __NetBSD__
649 union {
650 /* _DRM_FRAME_BUFFER, _DRM_AGP, _DRM_REGISTERS */
651 /* XXX mtrr should be moved into this case too. */
652 struct {
653 /*
654 * XXX bst seems like a waste of space, but not
655 * all accessors have the drm_device handy.
656 */
657 bus_space_tag_t bst;
658 bus_space_handle_t bsh;
659 struct drm_bus_map *bus_map;
660 } bus_space;
661
662 /* _DRM_CONSISTENT */
663 struct drm_dma_handle *dmah;
664
665 /* _DRM_SCATTER_GATHER */
666 #if 0 /* XXX stored in dev->sg instead */
667 struct drm_sg_mem *sg;
668 #endif
669
670 /* _DRM_SHM */
671 /* XXX Anything? uvm object? */
672 } lm_data;
673 #endif
674 };
675
676 typedef struct drm_local_map drm_local_map_t;
677
678 /**
679 * Mappings list
680 */
681 struct drm_map_list {
682 struct list_head head; /**< list head */
683 struct drm_hash_item hash;
684 struct drm_local_map *map; /**< mapping */
685 uint64_t user_token;
686 struct drm_master *master;
687 };
688
689 /**
690 * Context handle list
691 */
692 struct drm_ctx_list {
693 struct list_head head; /**< list head */
694 drm_context_t handle; /**< context handle */
695 struct drm_file *tag; /**< associated fd private data */
696 };
697
698 /* location of GART table */
699 #define DRM_ATI_GART_MAIN 1
700 #define DRM_ATI_GART_FB 2
701
702 #define DRM_ATI_GART_PCI 1
703 #define DRM_ATI_GART_PCIE 2
704 #define DRM_ATI_GART_IGP 3
705
706 struct drm_ati_pcigart_info {
707 int gart_table_location;
708 int gart_reg_if;
709 void *addr;
710 dma_addr_t bus_addr;
711 dma_addr_t table_mask;
712 struct drm_dma_handle *table_handle;
713 struct drm_local_map mapping;
714 int table_size;
715 };
716
717 /**
718 * This structure defines the drm_mm memory object, which will be used by the
719 * DRM for its buffer objects.
720 */
721 struct drm_gem_object {
722 /** Reference count of this object */
723 struct kref refcount;
724
725 /**
726 * handle_count - gem file_priv handle count of this object
727 *
728 * Each handle also holds a reference. Note that when the handle_count
729 * drops to 0 any global names (e.g. the id in the flink namespace) will
730 * be cleared.
731 *
732 * Protected by dev->object_name_lock.
733 * */
734 unsigned handle_count;
735
736 /** Related drm device */
737 struct drm_device *dev;
738
739 #ifdef __NetBSD__
740 /* UVM anonymous object for shared memory mappings. */
741 struct uvm_object *gemo_shm_uao;
742
743 /* UVM object with custom pager ops for device memory mappings. */
744 struct uvm_object gemo_uvmobj;
745 #else
746 /** File representing the shmem storage */
747 struct file *filp;
748 #endif
749
750 /* Mapping info for this object */
751 struct drm_vma_offset_node vma_node;
752
753 /**
754 * Size of the object, in bytes. Immutable over the object's
755 * lifetime.
756 */
757 size_t size;
758
759 /**
760 * Global name for this object, starts at 1. 0 means unnamed.
761 * Access is covered by the object_name_lock in the related drm_device
762 */
763 int name;
764
765 /**
766 * Memory domains. These monitor which caches contain read/write data
767 * related to the object. When transitioning from one set of domains
768 * to another, the driver is called to ensure that caches are suitably
769 * flushed and invalidated
770 */
771 uint32_t read_domains;
772 uint32_t write_domain;
773
774 /**
775 * While validating an exec operation, the
776 * new read/write domain values are computed here.
777 * They will be transferred to the above values
778 * at the point that any cache flushing occurs
779 */
780 uint32_t pending_read_domains;
781 uint32_t pending_write_domain;
782
783 #ifndef __NetBSD__ /* XXX drm prime */
784 /**
785 * dma_buf - dma buf associated with this GEM object
786 *
787 * Pointer to the dma-buf associated with this gem object (either
788 * through importing or exporting). We break the resulting reference
789 * loop when the last gem handle for this object is released.
790 *
791 * Protected by obj->object_name_lock
792 */
793 struct dma_buf *dma_buf;
794
795 /**
796 * import_attach - dma buf attachment backing this object
797 *
798 * Any foreign dma_buf imported as a gem object has this set to the
799 * attachment point for the device. This is invariant over the lifetime
800 * of a gem object.
801 *
802 * The driver's ->gem_free_object callback is responsible for cleaning
803 * up the dma_buf attachment and references acquired at import time.
804 *
805 * Note that the drm gem/prime core does not depend upon drivers setting
806 * this field any more. So for drivers where this doesn't make sense
807 * (e.g. virtual devices or a displaylink behind an usb bus) they can
808 * simply leave it as NULL.
809 */
810 struct dma_buf_attachment *import_attach;
811 #endif
812 };
813
814 #include <drm/drm_crtc.h>
815
816 /**
817 * struct drm_master - drm master structure
818 *
819 * @refcount: Refcount for this master object.
820 * @minor: Link back to minor char device we are master for. Immutable.
821 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
822 * @unique_len: Length of unique field. Protected by drm_global_mutex.
823 * @unique_size: Amount allocated. Protected by drm_global_mutex.
824 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex.
825 * @magicfree: List of used authentication tokens. Protected by struct_mutex.
826 * @lock: DRI lock information.
827 * @driver_priv: Pointer to driver-private information.
828 */
829 struct drm_master {
830 struct kref refcount;
831 struct drm_minor *minor;
832 char *unique;
833 int unique_len;
834 int unique_size;
835 struct drm_open_hash magiclist;
836 struct list_head magicfree;
837 struct drm_lock_data lock;
838 void *driver_priv;
839 };
840
841 /* Size of ringbuffer for vblank timestamps. Just double-buffer
842 * in initial implementation.
843 */
844 #define DRM_VBLANKTIME_RBSIZE 2
845
846 /* Flags and return codes for get_vblank_timestamp() driver function. */
847 #define DRM_CALLED_FROM_VBLIRQ 1
848 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
849 #define DRM_VBLANKTIME_INVBL (1 << 1)
850
851 /* get_scanout_position() return flags */
852 #define DRM_SCANOUTPOS_VALID (1 << 0)
853 #define DRM_SCANOUTPOS_INVBL (1 << 1)
854 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
855
856 struct drm_bus_irq_cookie;
857
858 struct drm_bus {
859 int bus_type;
860 /*
861 * XXX NetBSD will have a problem with this: pci_intr_handle_t
862 * is a long on some LP64 architectures, where int is 32-bit,
863 * such as alpha and mips64.
864 */
865 int (*get_irq)(struct drm_device *dev);
866 #ifdef __NetBSD__
867 int (*irq_install)(struct drm_device *, irqreturn_t (*)(void *), int,
868 const char *, void *, struct drm_bus_irq_cookie **);
869 void (*irq_uninstall)(struct drm_device *,
870 struct drm_bus_irq_cookie *);
871 #endif
872 const char *(*get_name)(struct drm_device *dev);
873 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
874 int (*set_unique)(struct drm_device *dev, struct drm_master *master,
875 struct drm_unique *unique);
876 int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
877 };
878
879 /**
880 * DRM driver structure. This structure represent the common code for
881 * a family of cards. There will one drm_device for each card present
882 * in this family
883 */
884 struct drm_driver {
885 int (*load) (struct drm_device *, unsigned long flags);
886 int (*firstopen) (struct drm_device *);
887 int (*open) (struct drm_device *, struct drm_file *);
888 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
889 void (*postclose) (struct drm_device *, struct drm_file *);
890 void (*lastclose) (struct drm_device *);
891 int (*unload) (struct drm_device *);
892 int (*suspend) (struct drm_device *, pm_message_t state);
893 int (*resume) (struct drm_device *);
894 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
895 int (*dma_quiescent) (struct drm_device *);
896 int (*context_dtor) (struct drm_device *dev, int context);
897
898 /**
899 * get_vblank_counter - get raw hardware vblank counter
900 * @dev: DRM device
901 * @crtc: counter to fetch
902 *
903 * Driver callback for fetching a raw hardware vblank counter for @crtc.
904 * If a device doesn't have a hardware counter, the driver can simply
905 * return the value of drm_vblank_count. The DRM core will account for
906 * missed vblank events while interrupts where disabled based on system
907 * timestamps.
908 *
909 * Wraparound handling and loss of events due to modesetting is dealt
910 * with in the DRM core code.
911 *
912 * RETURNS
913 * Raw vblank counter value.
914 */
915 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
916
917 /**
918 * enable_vblank - enable vblank interrupt events
919 * @dev: DRM device
920 * @crtc: which irq to enable
921 *
922 * Enable vblank interrupts for @crtc. If the device doesn't have
923 * a hardware vblank counter, this routine should be a no-op, since
924 * interrupts will have to stay on to keep the count accurate.
925 *
926 * RETURNS
927 * Zero on success, appropriate errno if the given @crtc's vblank
928 * interrupt cannot be enabled.
929 */
930 int (*enable_vblank) (struct drm_device *dev, int crtc);
931
932 /**
933 * disable_vblank - disable vblank interrupt events
934 * @dev: DRM device
935 * @crtc: which irq to enable
936 *
937 * Disable vblank interrupts for @crtc. If the device doesn't have
938 * a hardware vblank counter, this routine should be a no-op, since
939 * interrupts will have to stay on to keep the count accurate.
940 */
941 void (*disable_vblank) (struct drm_device *dev, int crtc);
942
943 /**
944 * Called by \c drm_device_is_agp. Typically used to determine if a
945 * card is really attached to AGP or not.
946 *
947 * \param dev DRM device handle
948 *
949 * \returns
950 * One of three values is returned depending on whether or not the
951 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
952 * (return of 1), or may or may not be AGP (return of 2).
953 */
954 int (*device_is_agp) (struct drm_device *dev);
955
956 /**
957 * Called by vblank timestamping code.
958 *
959 * Return the current display scanout position from a crtc, and an
960 * optional accurate ktime_get timestamp of when position was measured.
961 *
962 * \param dev DRM device.
963 * \param crtc Id of the crtc to query.
964 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
965 * \param *vpos Target location for current vertical scanout position.
966 * \param *hpos Target location for current horizontal scanout position.
967 * \param *stime Target location for timestamp taken immediately before
968 * scanout position query. Can be NULL to skip timestamp.
969 * \param *etime Target location for timestamp taken immediately after
970 * scanout position query. Can be NULL to skip timestamp.
971 *
972 * Returns vpos as a positive number while in active scanout area.
973 * Returns vpos as a negative number inside vblank, counting the number
974 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
975 * until start of active scanout / end of vblank."
976 *
977 * \return Flags, or'ed together as follows:
978 *
979 * DRM_SCANOUTPOS_VALID = Query successful.
980 * DRM_SCANOUTPOS_INVBL = Inside vblank.
981 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
982 * this flag means that returned position may be offset by a constant
983 * but unknown small number of scanlines wrt. real scanout position.
984 *
985 */
986 int (*get_scanout_position) (struct drm_device *dev, int crtc,
987 unsigned int flags,
988 int *vpos, int *hpos, ktime_t *stime,
989 ktime_t *etime);
990
991 /**
992 * Called by \c drm_get_last_vbltimestamp. Should return a precise
993 * timestamp when the most recent VBLANK interval ended or will end.
994 *
995 * Specifically, the timestamp in @vblank_time should correspond as
996 * closely as possible to the time when the first video scanline of
997 * the video frame after the end of VBLANK will start scanning out,
998 * the time immediately after end of the VBLANK interval. If the
999 * @crtc is currently inside VBLANK, this will be a time in the future.
1000 * If the @crtc is currently scanning out a frame, this will be the
1001 * past start time of the current scanout. This is meant to adhere
1002 * to the OpenML OML_sync_control extension specification.
1003 *
1004 * \param dev dev DRM device handle.
1005 * \param crtc crtc for which timestamp should be returned.
1006 * \param *max_error Maximum allowable timestamp error in nanoseconds.
1007 * Implementation should strive to provide timestamp
1008 * with an error of at most *max_error nanoseconds.
1009 * Returns true upper bound on error for timestamp.
1010 * \param *vblank_time Target location for returned vblank timestamp.
1011 * \param flags 0 = Defaults, no special treatment needed.
1012 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
1013 * irq handler. Some drivers need to apply some workarounds
1014 * for gpu-specific vblank irq quirks if flag is set.
1015 *
1016 * \returns
1017 * Zero if timestamping isn't supported in current display mode or a
1018 * negative number on failure. A positive status code on success,
1019 * which describes how the vblank_time timestamp was computed.
1020 */
1021 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
1022 int *max_error,
1023 struct timeval *vblank_time,
1024 unsigned flags);
1025
1026 /* these have to be filled in */
1027
1028 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
1029 void (*irq_preinstall) (struct drm_device *dev);
1030 int (*irq_postinstall) (struct drm_device *dev);
1031 void (*irq_uninstall) (struct drm_device *dev);
1032
1033 /* Master routines */
1034 int (*master_create)(struct drm_device *dev, struct drm_master *master);
1035 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
1036 /**
1037 * master_set is called whenever the minor master is set.
1038 * master_drop is called whenever the minor master is dropped.
1039 */
1040
1041 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
1042 bool from_open);
1043 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
1044 bool from_release);
1045
1046 int (*debugfs_init)(struct drm_minor *minor);
1047 void (*debugfs_cleanup)(struct drm_minor *minor);
1048
1049 /**
1050 * Driver-specific constructor for drm_gem_objects, to set up
1051 * obj->driver_private.
1052 *
1053 * Returns 0 on success.
1054 */
1055 void (*gem_free_object) (struct drm_gem_object *obj);
1056 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
1057 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
1058
1059 /* prime: */
1060 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
1061 int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
1062 uint32_t handle, uint32_t flags, int *prime_fd);
1063 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
1064 int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
1065 int prime_fd, uint32_t *handle);
1066 /* export GEM -> dmabuf */
1067 struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
1068 struct drm_gem_object *obj, int flags);
1069 /* import dmabuf -> GEM */
1070 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
1071 struct dma_buf *dma_buf);
1072 /* low-level interface used by drm_gem_prime_{import,export} */
1073 int (*gem_prime_pin)(struct drm_gem_object *obj);
1074 void (*gem_prime_unpin)(struct drm_gem_object *obj);
1075 struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj);
1076 struct drm_gem_object *(*gem_prime_import_sg_table)(
1077 struct drm_device *dev, size_t size,
1078 struct sg_table *sgt);
1079 void *(*gem_prime_vmap)(struct drm_gem_object *obj);
1080 void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr);
1081 int (*gem_prime_mmap)(struct drm_gem_object *obj,
1082 struct vm_area_struct *vma);
1083
1084 /* vga arb irq handler */
1085 void (*vgaarb_irq)(struct drm_device *dev, bool state);
1086
1087 /* dumb alloc support */
1088 int (*dumb_create)(struct drm_file *file_priv,
1089 struct drm_device *dev,
1090 struct drm_mode_create_dumb *args);
1091 int (*dumb_map_offset)(struct drm_file *file_priv,
1092 struct drm_device *dev, uint32_t handle,
1093 uint64_t *offset);
1094 int (*dumb_destroy)(struct drm_file *file_priv,
1095 struct drm_device *dev,
1096 uint32_t handle);
1097
1098 /* Driver private ops for this object */
1099 #ifdef __NetBSD__
1100 int (*mmap_object)(struct drm_device *, off_t, size_t, int,
1101 struct uvm_object **, voff_t *, struct file *);
1102 const struct uvm_pagerops *gem_uvm_ops;
1103 #else
1104 const struct vm_operations_struct *gem_vm_ops;
1105 #endif
1106
1107 int major;
1108 int minor;
1109 int patchlevel;
1110 const char *name;
1111 const char *desc;
1112 const char *date;
1113
1114 u32 driver_features;
1115 int dev_priv_size;
1116 const struct drm_ioctl_desc *ioctls;
1117 int num_ioctls;
1118 const struct file_operations *fops;
1119 union {
1120 struct pci_driver *pci;
1121 struct platform_device *platform_device;
1122 struct usb_driver *usb;
1123 } kdriver;
1124 const struct drm_bus *bus;
1125
1126 /* List of devices hanging off this driver with stealth attach. */
1127 struct list_head legacy_dev_list;
1128 };
1129
1130 enum drm_minor_type {
1131 DRM_MINOR_LEGACY,
1132 DRM_MINOR_CONTROL,
1133 DRM_MINOR_RENDER,
1134 DRM_MINOR_CNT,
1135 };
1136
1137 #ifdef __NetBSD__ /* XXX debugfs */
1138 struct seq_file;
1139 #endif
1140
1141 /**
1142 * Info file list entry. This structure represents a debugfs or proc file to
1143 * be created by the drm core
1144 */
1145 struct drm_info_list {
1146 const char *name; /** file name */
1147 int (*show)(struct seq_file*, void*); /** show callback */
1148 u32 driver_features; /**< Required driver features for this entry */
1149 void *data;
1150 };
1151
1152 /**
1153 * debugfs node structure. This structure represents a debugfs file.
1154 */
1155 struct drm_info_node {
1156 struct list_head list;
1157 struct drm_minor *minor;
1158 const struct drm_info_list *info_ent;
1159 struct dentry *dent;
1160 };
1161
1162 /**
1163 * DRM minor structure. This structure represents a drm minor number.
1164 */
1165 struct drm_minor {
1166 int index; /**< Minor device number */
1167 int type; /**< Control or render */
1168 struct device *kdev; /**< Linux device */
1169 struct drm_device *dev;
1170
1171 #ifndef __NetBSD__ /* XXX debugfs */
1172 struct dentry *debugfs_root;
1173
1174 struct list_head debugfs_list;
1175 struct mutex debugfs_lock; /* Protects debugfs_list. */
1176 #endif
1177
1178 /* currently active master for this node. Protected by master_mutex */
1179 struct drm_master *master;
1180 struct drm_mode_group mode_group;
1181 };
1182
1183
1184 struct drm_pending_vblank_event {
1185 struct drm_pending_event base;
1186 int pipe;
1187 struct drm_event_vblank event;
1188 };
1189
1190 struct drm_vblank_crtc {
1191 #ifdef __NetBSD__
1192 drm_waitqueue_t queue;
1193 #else
1194 wait_queue_head_t queue; /**< VBLANK wait queue */
1195 #endif
1196 struct timeval time[DRM_VBLANKTIME_RBSIZE]; /**< timestamp of current count */
1197 atomic_t count; /**< number of VBLANK interrupts */
1198 atomic_t refcount; /* number of users of vblank interruptsper crtc */
1199 u32 last; /* protected by dev->vbl_lock, used */
1200 /* for wraparound handling */
1201 u32 last_wait; /* Last vblank seqno waited per CRTC */
1202 unsigned int inmodeset; /* Display driver is setting mode */
1203 bool enabled; /* so we don't call enable more than
1204 once per disable */
1205 };
1206
1207 /**
1208 * DRM device structure. This structure represent a complete card that
1209 * may contain multiple heads.
1210 */
1211 struct drm_device {
1212 struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */
1213 char *devname; /**< For /proc/interrupts */
1214 int if_version; /**< Highest interface version set */
1215
1216 /** \name Lifetime Management */
1217 /*@{ */
1218 struct kref ref; /**< Object ref-count */
1219 struct device *dev; /**< Device structure of bus-device */
1220 struct drm_driver *driver; /**< DRM driver managing the device */
1221 void *dev_private; /**< DRM driver private data */
1222 struct drm_minor *control; /**< Control node */
1223 struct drm_minor *primary; /**< Primary node */
1224 struct drm_minor *render; /**< Render node */
1225 atomic_t unplugged; /**< Flag whether dev is dead */
1226 struct inode *anon_inode; /**< inode for private address-space */
1227 /*@} */
1228
1229 /** \name Locks */
1230 /*@{ */
1231 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1232 struct mutex struct_mutex; /**< For others */
1233 struct mutex master_mutex; /**< For drm_minor::master and drm_file::is_master */
1234 /*@} */
1235
1236 /** \name Usage Counters */
1237 /*@{ */
1238 int open_count; /**< Outstanding files open */
1239 int buf_use; /**< Buffers in use -- cannot alloc */
1240 atomic_t buf_alloc; /**< Buffer allocation in progress */
1241 /*@} */
1242
1243 struct list_head filelist;
1244
1245 /** \name Memory management */
1246 /*@{ */
1247 struct list_head maplist; /**< Linked list of regions */
1248 struct drm_open_hash map_hash; /**< User token hash table for maps */
1249
1250 /** \name Context handle management */
1251 /*@{ */
1252 struct list_head ctxlist; /**< Linked list of context handles */
1253 struct mutex ctxlist_mutex; /**< For ctxlist */
1254
1255 struct idr ctx_idr;
1256
1257 struct list_head vmalist; /**< List of vmas (for debugging) */
1258
1259 /*@} */
1260
1261 /** \name DMA support */
1262 /*@{ */
1263 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1264 /*@} */
1265
1266 /** \name Context support */
1267 /*@{ */
1268 bool irq_enabled; /**< True if irq handler is enabled */
1269 #ifdef __NetBSD__
1270 struct drm_bus_irq_cookie *irq_cookie;
1271 #endif
1272 __volatile__ long context_flag; /**< Context swapping flag */
1273 int last_context; /**< Last current context */
1274 /*@} */
1275
1276 /** \name VBLANK IRQ support */
1277 /*@{ */
1278
1279 /*
1280 * At load time, disabling the vblank interrupt won't be allowed since
1281 * old clients may not call the modeset ioctl and therefore misbehave.
1282 * Once the modeset ioctl *has* been called though, we can safely
1283 * disable them when unused.
1284 */
1285 bool vblank_disable_allowed;
1286
1287 /* array of size num_crtcs */
1288 struct drm_vblank_crtc *vblank;
1289
1290 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1291 spinlock_t vbl_lock;
1292 struct timer_list vblank_disable_timer;
1293
1294 u32 max_vblank_count; /**< size of vblank counter register */
1295
1296 /**
1297 * List of events
1298 */
1299 struct list_head vblank_event_list;
1300 spinlock_t event_lock;
1301
1302 /*@} */
1303
1304 struct drm_agp_head *agp; /**< AGP data */
1305
1306 struct pci_dev *pdev; /**< PCI device structure */
1307 #ifdef __alpha__
1308 struct pci_controller *hose;
1309 #endif
1310
1311 struct platform_device *platformdev; /**< Platform device struture */
1312 struct usb_device *usbdev;
1313
1314 #ifdef __NetBSD__
1315 bus_space_tag_t bst;
1316 struct drm_bus_map *bus_maps;
1317 unsigned bus_nmaps;
1318 bus_dma_tag_t bus_dmat;
1319 bus_dma_tag_t dmat;
1320 bool dmat_subregion_p;
1321 bus_addr_t dmat_subregion_min;
1322 bus_addr_t dmat_subregion_max;
1323 #endif
1324
1325 struct drm_sg_mem *sg; /**< Scatter gather memory */
1326 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1327 struct drm_sigdata sigdata; /**< For block_all_signals */
1328 #ifndef __NetBSD__
1329 sigset_t sigmask;
1330 #endif
1331
1332 struct drm_local_map *agp_buffer_map;
1333 unsigned int agp_buffer_token;
1334
1335 struct drm_mode_config mode_config; /**< Current mode config */
1336
1337 /** \name GEM information */
1338 /*@{ */
1339 struct mutex object_name_lock;
1340 struct idr object_name_idr;
1341 struct drm_vma_offset_manager *vma_offset_manager;
1342 /*@} */
1343 int switch_power_state;
1344 };
1345
1346 #define DRM_SWITCH_POWER_ON 0
1347 #define DRM_SWITCH_POWER_OFF 1
1348 #define DRM_SWITCH_POWER_CHANGING 2
1349 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3
1350
drm_core_check_feature(struct drm_device * dev,int feature)1351 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1352 int feature)
1353 {
1354 return ((dev->driver->driver_features & feature) ? 1 : 0);
1355 }
1356
drm_dev_to_irq(struct drm_device * dev)1357 static inline int drm_dev_to_irq(struct drm_device *dev)
1358 {
1359 return dev->driver->bus->get_irq(dev);
1360 }
1361
drm_device_set_unplugged(struct drm_device * dev)1362 static inline void drm_device_set_unplugged(struct drm_device *dev)
1363 {
1364 smp_wmb();
1365 atomic_set(&dev->unplugged, 1);
1366 }
1367
drm_device_is_unplugged(struct drm_device * dev)1368 static inline int drm_device_is_unplugged(struct drm_device *dev)
1369 {
1370 int ret = atomic_read(&dev->unplugged);
1371 smp_rmb();
1372 return ret;
1373 }
1374
drm_modeset_is_locked(struct drm_device * dev)1375 static inline bool drm_modeset_is_locked(struct drm_device *dev)
1376 {
1377 return mutex_is_locked(&dev->mode_config.mutex);
1378 }
1379
drm_is_render_client(const struct drm_file * file_priv)1380 static inline bool drm_is_render_client(const struct drm_file *file_priv)
1381 {
1382 return file_priv->minor->type == DRM_MINOR_RENDER;
1383 }
1384
drm_is_control_client(const struct drm_file * file_priv)1385 static inline bool drm_is_control_client(const struct drm_file *file_priv)
1386 {
1387 return file_priv->minor->type == DRM_MINOR_CONTROL;
1388 }
1389
drm_is_primary_client(const struct drm_file * file_priv)1390 static inline bool drm_is_primary_client(const struct drm_file *file_priv)
1391 {
1392 return file_priv->minor->type == DRM_MINOR_LEGACY;
1393 }
1394
1395 /******************************************************************/
1396 /** \name Internal function definitions */
1397 /*@{*/
1398
1399 /* Driver support (drm_drv.h) */
1400 #ifndef __NetBSD__
1401 extern long drm_ioctl(struct file *filp,
1402 unsigned int cmd, unsigned long arg);
1403 extern long drm_compat_ioctl(struct file *filp,
1404 unsigned int cmd, unsigned long arg);
1405 #endif
1406 extern int drm_lastclose(struct drm_device *dev);
1407 #ifndef __NetBSD__
1408 extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
1409 #endif
1410
1411 /* Device support (drm_fops.h) */
1412 extern struct mutex drm_global_mutex;
1413 #ifdef __NetBSD__
1414 extern int drm_open_file(struct drm_file *, void *, struct drm_minor *);
1415 extern void drm_close_file(struct drm_file *);
1416 #else
1417 extern int drm_open(struct inode *inode, struct file *filp);
1418 extern int drm_stub_open(struct inode *inode, struct file *filp);
1419 extern ssize_t drm_read(struct file *filp, char __user *buffer,
1420 size_t count, loff_t *offset);
1421 extern int drm_release(struct inode *inode, struct file *filp);
1422 #endif
1423
1424 /* Mapping support (drm_vm.h) */
1425 #ifdef __NetBSD__
1426 extern int drm_mmap_object(struct drm_device *, off_t, size_t, int,
1427 struct uvm_object **, voff_t *, struct file *);
1428 extern paddr_t drm_mmap_paddr(struct drm_device *, off_t, int);
1429 #else
1430 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1431 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1432 extern void drm_vm_open_locked(struct drm_device *dev, struct vm_area_struct *vma);
1433 extern void drm_vm_close_locked(struct drm_device *dev, struct vm_area_struct *vma);
1434 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1435
1436 #endif
1437
1438 /* Memory management support (drm_memory.h) */
1439 #include <drm/drm_memory.h>
1440 #ifdef __NetBSD__
1441 extern int drm_limit_dma_space(struct drm_device *, resource_size_t,
1442 resource_size_t);
1443 #endif
1444
1445 /* Misc. IOCTL support (drm_ioctl.h) */
1446 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1447 struct drm_file *file_priv);
1448 extern int drm_getunique(struct drm_device *dev, void *data,
1449 struct drm_file *file_priv);
1450 extern int drm_setunique(struct drm_device *dev, void *data,
1451 struct drm_file *file_priv);
1452 extern int drm_getmap(struct drm_device *dev, void *data,
1453 struct drm_file *file_priv);
1454 extern int drm_getclient(struct drm_device *dev, void *data,
1455 struct drm_file *file_priv);
1456 extern int drm_getstats(struct drm_device *dev, void *data,
1457 struct drm_file *file_priv);
1458 extern int drm_getcap(struct drm_device *dev, void *data,
1459 struct drm_file *file_priv);
1460 extern int drm_setclientcap(struct drm_device *dev, void *data,
1461 struct drm_file *file_priv);
1462 extern int drm_setversion(struct drm_device *dev, void *data,
1463 struct drm_file *file_priv);
1464 extern int drm_noop(struct drm_device *dev, void *data,
1465 struct drm_file *file_priv);
1466
1467 /* Context IOCTL support (drm_context.h) */
1468 extern int drm_resctx(struct drm_device *dev, void *data,
1469 struct drm_file *file_priv);
1470 extern int drm_addctx(struct drm_device *dev, void *data,
1471 struct drm_file *file_priv);
1472 extern int drm_getctx(struct drm_device *dev, void *data,
1473 struct drm_file *file_priv);
1474 extern int drm_switchctx(struct drm_device *dev, void *data,
1475 struct drm_file *file_priv);
1476 extern int drm_newctx(struct drm_device *dev, void *data,
1477 struct drm_file *file_priv);
1478 extern int drm_rmctx(struct drm_device *dev, void *data,
1479 struct drm_file *file_priv);
1480
1481 extern int drm_ctxbitmap_init(struct drm_device *dev);
1482 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1483 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1484
1485 extern int drm_setsareactx(struct drm_device *dev, void *data,
1486 struct drm_file *file_priv);
1487 extern int drm_getsareactx(struct drm_device *dev, void *data,
1488 struct drm_file *file_priv);
1489
1490 /* Authentication IOCTL support (drm_auth.h) */
1491 extern int drm_getmagic(struct drm_device *dev, void *data,
1492 struct drm_file *file_priv);
1493 extern int drm_authmagic(struct drm_device *dev, void *data,
1494 struct drm_file *file_priv);
1495 extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic);
1496
1497 /* Cache management (drm_cache.c) */
1498 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1499 #ifdef __NetBSD__ /* XXX drm clflush */
1500 void drm_clflush_pglist(struct pglist *);
1501 void drm_clflush_page(struct page *);
1502 void drm_clflush_virt_range(const void *, size_t);
1503 #else
1504 void drm_clflush_sg(struct sg_table *st);
1505 void drm_clflush_virt_range(char *addr, unsigned long length);
1506 #endif
1507
1508 /* Locking IOCTL support (drm_lock.h) */
1509 extern int drm_lock(struct drm_device *dev, void *data,
1510 struct drm_file *file_priv);
1511 extern int drm_unlock(struct drm_device *dev, void *data,
1512 struct drm_file *file_priv);
1513 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1514 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1515 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1516
1517 /*
1518 * These are exported to drivers so that they can implement fencing using
1519 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1520 */
1521
1522 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1523
1524 /* Buffer management support (drm_bufs.h) */
1525 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1526 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1527 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1528 unsigned int size, enum drm_map_type type,
1529 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1530 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1531 struct drm_file *file_priv);
1532 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1533 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1534 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1535 struct drm_file *file_priv);
1536 extern int drm_addbufs(struct drm_device *dev, void *data,
1537 struct drm_file *file_priv);
1538 extern int drm_infobufs(struct drm_device *dev, void *data,
1539 struct drm_file *file_priv);
1540 extern int drm_markbufs(struct drm_device *dev, void *data,
1541 struct drm_file *file_priv);
1542 extern int drm_freebufs(struct drm_device *dev, void *data,
1543 struct drm_file *file_priv);
1544 extern int drm_mapbufs(struct drm_device *dev, void *data,
1545 struct drm_file *file_priv);
1546 extern int drm_dma_ioctl(struct drm_device *dev, void *data,
1547 struct drm_file *file_priv);
1548
1549 /* DMA support (drm_dma.h) */
1550 extern int drm_legacy_dma_setup(struct drm_device *dev);
1551 extern void drm_legacy_dma_takedown(struct drm_device *dev);
1552 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1553 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1554 struct drm_file *filp);
1555
1556 /* IRQ support (drm_irq.h) */
1557 extern int drm_control(struct drm_device *dev, void *data,
1558 struct drm_file *file_priv);
1559 extern int drm_irq_install(struct drm_device *dev);
1560 extern int drm_irq_uninstall(struct drm_device *dev);
1561
1562 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1563 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1564 struct drm_file *filp);
1565 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1566 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1567 struct timeval *vblanktime);
1568 extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
1569 struct drm_pending_vblank_event *e);
1570 extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1571 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1572 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1573 extern void drm_vblank_off(struct drm_device *dev, int crtc);
1574 extern void drm_vblank_cleanup(struct drm_device *dev);
1575 extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1576 struct timeval *tvblank, unsigned flags);
1577 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1578 int crtc, int *max_error,
1579 struct timeval *vblank_time,
1580 unsigned flags,
1581 const struct drm_crtc *refcrtc,
1582 const struct drm_display_mode *mode);
1583 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc,
1584 const struct drm_display_mode *mode);
1585
1586
1587 /* Modesetting support */
1588 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1589 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1590 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1591 struct drm_file *file_priv);
1592
1593 /* AGP/GART support (drm_agpsupport.h) */
1594
1595 #include <drm/drm_agpsupport.h>
1596
1597 #ifdef __NetBSD__
1598 struct drm_agp_hooks {
1599 drm_ioctl_t *agph_acquire_ioctl;
1600 drm_ioctl_t *agph_release_ioctl;
1601 drm_ioctl_t *agph_enable_ioctl;
1602 drm_ioctl_t *agph_info_ioctl;
1603 drm_ioctl_t *agph_alloc_ioctl;
1604 drm_ioctl_t *agph_free_ioctl;
1605 drm_ioctl_t *agph_bind_ioctl;
1606 drm_ioctl_t *agph_unbind_ioctl;
1607 int (*agph_release)(struct drm_device *);
1608 void (*agph_clear)(struct drm_device *);
1609 };
1610
1611 extern int drm_agp_release_hook(struct drm_device *);
1612 extern void drm_agp_clear_hook(struct drm_device *);
1613
1614 extern int drm_agp_register(const struct drm_agp_hooks *);
1615 extern void drm_agp_deregister(const struct drm_agp_hooks *);
1616 #endif
1617
1618 /* Stub support (drm_stub.h) */
1619 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1620 struct drm_file *file_priv);
1621 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1622 struct drm_file *file_priv);
1623 struct drm_master *drm_master_create(struct drm_minor *minor);
1624 extern struct drm_master *drm_master_get(struct drm_master *master);
1625 extern void drm_master_put(struct drm_master **master);
1626
1627 extern void drm_put_dev(struct drm_device *dev);
1628 extern void drm_unplug_dev(struct drm_device *dev);
1629 extern unsigned int drm_debug;
1630 extern unsigned int drm_rnodes;
1631 extern unsigned int drm_universal_planes;
1632
1633 extern unsigned int drm_vblank_offdelay;
1634 extern unsigned int drm_timestamp_precision;
1635 extern unsigned int drm_timestamp_monotonic;
1636
1637 extern struct class *drm_class;
1638 #ifndef __NetBSD__
1639 extern struct dentry *drm_debugfs_root;
1640
1641 #else
1642 extern spinlock_t drm_minor_lock;
1643 #endif
1644 extern struct idr drm_minors_idr;
1645
1646 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1647
1648 /* Debugfs support */
1649 #if defined(CONFIG_DEBUG_FS)
1650 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1651 struct dentry *root);
1652 extern int drm_debugfs_create_files(const struct drm_info_list *files,
1653 int count, struct dentry *root,
1654 struct drm_minor *minor);
1655 extern int drm_debugfs_remove_files(const struct drm_info_list *files,
1656 int count, struct drm_minor *minor);
1657 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1658 #else
drm_debugfs_init(struct drm_minor * minor,int minor_id,struct dentry * root)1659 static inline int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1660 struct dentry *root)
1661 {
1662 return 0;
1663 }
1664
drm_debugfs_create_files(const struct drm_info_list * files,int count,struct dentry * root,struct drm_minor * minor)1665 static inline int drm_debugfs_create_files(const struct drm_info_list *files,
1666 int count, struct dentry *root,
1667 struct drm_minor *minor)
1668 {
1669 return 0;
1670 }
1671
drm_debugfs_remove_files(const struct drm_info_list * files,int count,struct drm_minor * minor)1672 static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
1673 int count, struct drm_minor *minor)
1674 {
1675 return 0;
1676 }
1677
drm_debugfs_cleanup(struct drm_minor * minor)1678 static inline int drm_debugfs_cleanup(struct drm_minor *minor)
1679 {
1680 return 0;
1681 }
1682 #endif
1683
1684 #ifndef __NetBSD__
1685 /* Info file support */
1686 extern int drm_name_info(struct seq_file *m, void *data);
1687 extern int drm_vm_info(struct seq_file *m, void *data);
1688 extern int drm_bufs_info(struct seq_file *m, void *data);
1689 extern int drm_vblank_info(struct seq_file *m, void *data);
1690 extern int drm_clients_info(struct seq_file *m, void* data);
1691 extern int drm_gem_name_info(struct seq_file *m, void *data);
1692 #endif
1693
1694
1695 extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
1696 struct drm_gem_object *obj, int flags);
1697 extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
1698 struct drm_file *file_priv, uint32_t handle, uint32_t flags,
1699 int *prime_fd);
1700 extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
1701 struct dma_buf *dma_buf);
1702 extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
1703 struct drm_file *file_priv, int prime_fd, uint32_t *handle);
1704 extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
1705
1706 extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
1707 struct drm_file *file_priv);
1708 extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data,
1709 struct drm_file *file_priv);
1710
1711 #ifndef __NetBSD__ /* XXX temporary measure 20130212 */
1712 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
1713 dma_addr_t *addrs, int max_pages);
1714 extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages);
1715 extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
1716 #endif
1717
1718 int drm_gem_dumb_destroy(struct drm_file *file,
1719 struct drm_device *dev,
1720 uint32_t handle);
1721
1722 #ifndef __NetBSD__ /* XXX drm prime */
1723 void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv);
1724 void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv);
1725 void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf);
1726 #endif
1727
1728 #if DRM_DEBUG_CODE
1729 #ifndef __NetBSD__
1730 extern int drm_vma_info(struct seq_file *m, void *data);
1731 #endif
1732 #endif
1733
1734 /* Scatter Gather Support (drm_scatter.h) */
1735 extern void drm_legacy_sg_cleanup(struct drm_device *dev);
1736 extern int drm_sg_alloc(struct drm_device *dev, void *data,
1737 struct drm_file *file_priv);
1738 extern int drm_sg_free(struct drm_device *dev, void *data,
1739 struct drm_file *file_priv);
1740
1741 /* ATI PCIGART support (ati_pcigart.h) */
1742 extern int drm_ati_pcigart_init(struct drm_device *dev,
1743 struct drm_ati_pcigart_info * gart_info);
1744 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1745 struct drm_ati_pcigart_info * gart_info);
1746
1747 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1748 size_t align);
1749 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1750 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1751 #ifdef __NetBSD__
1752 extern int drmkms_pci_agp_guarantee_initialized(void);
1753 extern int drm_pci_attach(device_t, const struct pci_attach_args *,
1754 struct pci_dev *, struct drm_driver *, unsigned long,
1755 struct drm_device **);
1756 extern int drm_pci_detach(struct drm_device *, int);
1757 #endif
1758
1759 /* sysfs support (drm_sysfs.c) */
1760 struct drm_sysfs_class;
1761 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1762 extern void drm_sysfs_destroy(void);
1763 extern int drm_sysfs_device_add(struct drm_minor *minor);
1764 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1765 extern void drm_sysfs_device_remove(struct drm_minor *minor);
1766 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1767 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1768
1769 /* Graphics Execution Manager library functions (drm_gem.c) */
1770 int drm_gem_init(struct drm_device *dev);
1771 void drm_gem_destroy(struct drm_device *dev);
1772 void drm_gem_object_release(struct drm_gem_object *obj);
1773 void drm_gem_object_free(struct kref *kref);
1774 int drm_gem_object_init(struct drm_device *dev,
1775 struct drm_gem_object *obj, size_t size);
1776 void drm_gem_private_object_init(struct drm_device *dev,
1777 struct drm_gem_object *obj, size_t size);
1778 #ifdef __NetBSD__
1779 void drm_gem_pager_reference(struct uvm_object *);
1780 void drm_gem_pager_detach(struct uvm_object *);
1781 int drm_gem_mmap_object(struct drm_device *, off_t, size_t, int,
1782 struct uvm_object **, voff_t *, struct file *);
1783 int drm_gem_or_legacy_mmap_object(struct drm_device *, off_t, size_t, int,
1784 struct uvm_object **, voff_t *, struct file *);
1785 #else
1786 void drm_gem_vm_open(struct vm_area_struct *vma);
1787 void drm_gem_vm_close(struct vm_area_struct *vma);
1788 int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,
1789 struct vm_area_struct *vma);
1790 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1791 #endif
1792
1793 #include <drm/drm_global.h>
1794
1795 static inline void
drm_gem_object_reference(struct drm_gem_object * obj)1796 drm_gem_object_reference(struct drm_gem_object *obj)
1797 {
1798 kref_get(&obj->refcount);
1799 }
1800
1801 static inline void
drm_gem_object_unreference(struct drm_gem_object * obj)1802 drm_gem_object_unreference(struct drm_gem_object *obj)
1803 {
1804 if (obj != NULL)
1805 kref_put(&obj->refcount, drm_gem_object_free);
1806 }
1807
1808 static inline void
drm_gem_object_unreference_unlocked(struct drm_gem_object * obj)1809 drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1810 {
1811 if (obj != NULL) {
1812 struct drm_device *const dev = obj->dev;
1813 if (kref_put_mutex(&obj->refcount, drm_gem_object_free,
1814 &dev->struct_mutex))
1815 mutex_unlock(&dev->struct_mutex);
1816 }
1817 }
1818
1819 int drm_gem_handle_create_tail(struct drm_file *file_priv,
1820 struct drm_gem_object *obj,
1821 u32 *handlep);
1822 int drm_gem_handle_create(struct drm_file *file_priv,
1823 struct drm_gem_object *obj,
1824 u32 *handlep);
1825 int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
1826
1827
1828 void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
1829 int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
1830 int drm_gem_create_mmap_offset_size(struct drm_gem_object *obj, size_t size);
1831
1832 struct page **drm_gem_get_pages(struct drm_gem_object *obj, gfp_t gfpmask);
1833 void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages,
1834 bool dirty, bool accessed);
1835
1836 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1837 struct drm_file *filp,
1838 u32 handle);
1839 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1840 struct drm_file *file_priv);
1841 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1842 struct drm_file *file_priv);
1843 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1844 struct drm_file *file_priv);
1845 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1846 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1847
1848 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1849 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1850 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1851
drm_core_findmap(struct drm_device * dev,unsigned int token)1852 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1853 unsigned int token)
1854 {
1855 struct drm_map_list *_entry;
1856 list_for_each_entry(_entry, &dev->maplist, head)
1857 if (_entry->user_token == token)
1858 return _entry->map;
1859 return NULL;
1860 }
1861
drm_core_dropmap(struct drm_local_map * map)1862 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1863 {
1864 }
1865
1866 #include <drm/drm_mem_util.h>
1867
1868 struct drm_device *drm_dev_alloc(struct drm_driver *driver,
1869 struct device *parent);
1870 void drm_dev_ref(struct drm_device *dev);
1871 void drm_dev_unref(struct drm_device *dev);
1872 int drm_dev_register(struct drm_device *dev, unsigned long flags);
1873 void drm_dev_unregister(struct drm_device *dev);
1874
1875 struct drm_minor *drm_minor_acquire(unsigned int minor_id);
1876 void drm_minor_release(struct drm_minor *minor);
1877
1878 /*@}*/
1879
1880 /* PCI section */
drm_pci_device_is_agp(struct drm_device * dev)1881 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1882 {
1883 if (dev->driver->device_is_agp != NULL) {
1884 int err = (*dev->driver->device_is_agp) (dev);
1885
1886 if (err != 2) {
1887 return err;
1888 }
1889 }
1890
1891 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1892 }
1893 void drm_pci_agp_destroy(struct drm_device *dev);
1894
1895 extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1896 extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1897 extern int drm_get_pci_dev(struct pci_dev *pdev,
1898 const struct pci_device_id *ent,
1899 struct drm_driver *driver);
1900
1901 #define DRM_PCIE_SPEED_25 1
1902 #define DRM_PCIE_SPEED_50 2
1903 #define DRM_PCIE_SPEED_80 4
1904
1905 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
1906
1907 /* platform section */
1908 extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1909
1910 /* returns true if currently okay to sleep */
drm_can_sleep(void)1911 static __inline__ bool drm_can_sleep(void)
1912 {
1913 #ifdef __NetBSD__
1914 return false; /* XXX */
1915 #else
1916 if (in_atomic() || in_dbg_master() || irqs_disabled())
1917 return false;
1918 return true;
1919 #endif
1920 }
1921
1922 #ifdef __NetBSD__
1923 static inline bool
DRM_IS_BUS_SPACE(struct drm_local_map * map)1924 DRM_IS_BUS_SPACE(struct drm_local_map *map)
1925 {
1926 switch (map->type) {
1927 case _DRM_FRAME_BUFFER:
1928 panic("I don't know how to access drm frame buffer memory!");
1929
1930 case _DRM_REGISTERS:
1931 return true;
1932
1933 case _DRM_SHM:
1934 panic("I don't know how to access drm shared memory!");
1935
1936 case _DRM_AGP:
1937 panic("I don't know how to access drm agp memory!");
1938
1939 case _DRM_SCATTER_GATHER:
1940 panic("I don't know how to access drm scatter-gather memory!");
1941
1942 case _DRM_CONSISTENT:
1943 /*
1944 * XXX Old drm uses bus space access for this, but
1945 * consistent maps don't have bus space handles! They
1946 * do, however, have kernel virtual addresses in the
1947 * map->handle, so maybe that's right.
1948 */
1949 #if 0
1950 return false;
1951 #endif
1952 panic("I don't know how to access drm consistent memory!");
1953
1954 default:
1955 panic("I don't know what kind of memory you mean!");
1956 }
1957 }
1958
1959 static inline uint8_t
DRM_READ8(struct drm_local_map * map,bus_size_t offset)1960 DRM_READ8(struct drm_local_map *map, bus_size_t offset)
1961 {
1962 if (DRM_IS_BUS_SPACE(map))
1963 return bus_space_read_1(map->lm_data.bus_space.bst,
1964 map->lm_data.bus_space.bsh, offset);
1965 else
1966 return *(volatile uint8_t *)((vaddr_t)map->handle + offset);
1967 }
1968
1969 static inline uint16_t
DRM_READ16(struct drm_local_map * map,bus_size_t offset)1970 DRM_READ16(struct drm_local_map *map, bus_size_t offset)
1971 {
1972 if (DRM_IS_BUS_SPACE(map))
1973 return bus_space_read_2(map->lm_data.bus_space.bst,
1974 map->lm_data.bus_space.bsh, offset);
1975 else
1976 return *(volatile uint16_t *)((vaddr_t)map->handle + offset);
1977 }
1978
1979 static inline uint32_t
DRM_READ32(struct drm_local_map * map,bus_size_t offset)1980 DRM_READ32(struct drm_local_map *map, bus_size_t offset)
1981 {
1982 if (DRM_IS_BUS_SPACE(map))
1983 return bus_space_read_4(map->lm_data.bus_space.bst,
1984 map->lm_data.bus_space.bsh, offset);
1985 else
1986 return *(volatile uint32_t *)((vaddr_t)map->handle + offset);
1987 }
1988
1989 static inline uint64_t
DRM_READ64(struct drm_local_map * map,bus_size_t offset)1990 DRM_READ64(struct drm_local_map *map, bus_size_t offset)
1991 {
1992 if (DRM_IS_BUS_SPACE(map)) {
1993 #if _LP64 /* XXX How to detect bus_space_read_8? */
1994 return bus_space_read_8(map->lm_data.bus_space.bst,
1995 map->lm_data.bus_space.bsh, offset);
1996 #elif _BYTE_ORDER == _LITTLE_ENDIAN
1997 /* XXX Yes, this is sketchy. */
1998 return bus_space_read_4(map->lm_data.bus_space.bst,
1999 map->lm_data.bus_space.bsh, offset) |
2000 ((uint64_t)bus_space_read_4(map->lm_data.bus_space.bst,
2001 map->lm_data.bus_space.bsh, (offset + 4)) << 32);
2002 #else
2003 /* XXX Yes, this is sketchy. */
2004 return bus_space_read_4(map->lm_data.bus_space.bst,
2005 map->lm_data.bus_space.bsh, (offset + 4)) |
2006 ((uint64_t)bus_space_read_4(map->lm_data.bus_space.bst,
2007 map->lm_data.bus_space.bsh, offset) << 32);
2008 #endif
2009 } else {
2010 return *(volatile uint64_t *)((vaddr_t)map->handle + offset);
2011 }
2012 }
2013
2014 static inline void
DRM_WRITE8(struct drm_local_map * map,bus_size_t offset,uint8_t value)2015 DRM_WRITE8(struct drm_local_map *map, bus_size_t offset, uint8_t value)
2016 {
2017 if (DRM_IS_BUS_SPACE(map))
2018 bus_space_write_1(map->lm_data.bus_space.bst,
2019 map->lm_data.bus_space.bsh, offset, value);
2020 else
2021 *(volatile uint8_t *)((vaddr_t)map->handle + offset) = value;
2022 }
2023
2024 static inline void
DRM_WRITE16(struct drm_local_map * map,bus_size_t offset,uint16_t value)2025 DRM_WRITE16(struct drm_local_map *map, bus_size_t offset, uint16_t value)
2026 {
2027 if (DRM_IS_BUS_SPACE(map))
2028 bus_space_write_2(map->lm_data.bus_space.bst,
2029 map->lm_data.bus_space.bsh, offset, value);
2030 else
2031 *(volatile uint16_t *)((vaddr_t)map->handle + offset) = value;
2032 }
2033
2034 static inline void
DRM_WRITE32(struct drm_local_map * map,bus_size_t offset,uint32_t value)2035 DRM_WRITE32(struct drm_local_map *map, bus_size_t offset, uint32_t value)
2036 {
2037 if (DRM_IS_BUS_SPACE(map))
2038 bus_space_write_4(map->lm_data.bus_space.bst,
2039 map->lm_data.bus_space.bsh, offset, value);
2040 else
2041 *(volatile uint32_t *)((vaddr_t)map->handle + offset) = value;
2042 }
2043
2044 static inline void
DRM_WRITE64(struct drm_local_map * map,bus_size_t offset,uint64_t value)2045 DRM_WRITE64(struct drm_local_map *map, bus_size_t offset, uint64_t value)
2046 {
2047 if (DRM_IS_BUS_SPACE(map)) {
2048 #if _LP64 /* XXX How to detect bus_space_write_8? */
2049 bus_space_write_8(map->lm_data.bus_space.bst,
2050 map->lm_data.bus_space.bsh, offset, value);
2051 #elif _BYTE_ORDER == _LITTLE_ENDIAN
2052 bus_space_write_4(map->lm_data.bus_space.bst,
2053 map->lm_data.bus_space.bsh, offset, (value & 0xffffffffU));
2054 bus_space_write_4(map->lm_data.bus_space.bst,
2055 map->lm_data.bus_space.bsh, (offset + 4), (value >> 32));
2056 #else
2057 bus_space_write_4(map->lm_data.bus_space.bst,
2058 map->lm_data.bus_space.bsh, offset, (value >> 32));
2059 bus_space_write_4(map->lm_data.bus_space.bst,
2060 map->lm_data.bus_space.bsh, (offset + 4),
2061 (value & 0xffffffffU));
2062 #endif
2063 } else {
2064 *(volatile uint64_t *)((vaddr_t)map->handle + offset) = value;
2065 }
2066 }
2067 #endif /* defined(__NetBSD__) */
2068
2069 #ifdef __NetBSD__
2070
2071 /* XXX This is pretty kludgerific. */
2072
2073 #include <linux/io-mapping.h>
2074
2075 static inline struct io_mapping *
drm_io_mapping_create_wc(struct drm_device * dev,resource_size_t addr,unsigned long size)2076 drm_io_mapping_create_wc(struct drm_device *dev, resource_size_t addr,
2077 unsigned long size)
2078 {
2079 return bus_space_io_mapping_create_wc(dev->bst, addr, size);
2080 }
2081
2082 #endif /* defined(__NetBSD__) */
2083
2084 #ifdef __NetBSD__
2085 extern const struct cdevsw drm_cdevsw;
2086 #endif
2087
2088 #endif /* __KERNEL__ */
2089 #endif
2090