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/module.h>
46 #include <linux/kernel.h>
47 #include <linux/miscdevice.h>
48 #include <linux/fs.h>
49 #include <linux/proc_fs.h>
50 #include <linux/init.h>
51 #include <linux/file.h>
52 #include <linux/platform_device.h>
53 #include <linux/pci.h>
54 #include <linux/jiffies.h>
55 #include <linux/dma-mapping.h>
56 #include <linux/mm.h>
57 #include <linux/cdev.h>
58 #include <linux/mutex.h>
59 #include <linux/slab.h>
60 #if defined(__alpha__) || defined(__powerpc__)
61 #include <asm/pgtable.h> /* For pte_wrprotect */
62 #endif
63 #include <asm/io.h>
64 #include <asm/mman.h>
65 #include <asm/uaccess.h>
66 #ifdef CONFIG_MTRR
67 #include <asm/mtrr.h>
68 #endif
69 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
70 #include <linux/types.h>
71 #include <linux/agp_backend.h>
72 #endif
73 #include <linux/workqueue.h>
74 #include <linux/poll.h>
75 #include <asm/pgalloc.h>
76 #include "drm.h"
77
78 #include <linux/idr.h>
79
80 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
81 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
82
83 struct drm_file;
84 struct drm_device;
85
86 #include "drm_os_linux.h"
87 #include "drm_hashtab.h"
88 #include "drm_mm.h"
89
90 #define DRM_UT_CORE 0x01
91 #define DRM_UT_DRIVER 0x02
92 #define DRM_UT_KMS 0x04
93 /*
94 * Three debug levels are defined.
95 * drm_core, drm_driver, drm_kms
96 * drm_core level can be used in the generic drm code. For example:
97 * drm_ioctl, drm_mm, drm_memory
98 * The macro definition of DRM_DEBUG is used.
99 * DRM_DEBUG(fmt, args...)
100 * The debug info by using the DRM_DEBUG can be obtained by adding
101 * the boot option of "drm.debug=1".
102 *
103 * drm_driver level can be used in the specific drm driver. It is used
104 * to add the debug info related with the drm driver. For example:
105 * i915_drv, i915_dma, i915_gem, radeon_drv,
106 * The macro definition of DRM_DEBUG_DRIVER can be used.
107 * DRM_DEBUG_DRIVER(fmt, args...)
108 * The debug info by using the DRM_DEBUG_DRIVER can be obtained by
109 * adding the boot option of "drm.debug=0x02"
110 *
111 * drm_kms level can be used in the KMS code related with specific drm driver.
112 * It is used to add the debug info related with KMS mode. For example:
113 * the connector/crtc ,
114 * The macro definition of DRM_DEBUG_KMS can be used.
115 * DRM_DEBUG_KMS(fmt, args...)
116 * The debug info by using the DRM_DEBUG_KMS can be obtained by
117 * adding the boot option of "drm.debug=0x04"
118 *
119 * If we add the boot option of "drm.debug=0x06", we can get the debug info by
120 * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
121 * If we add the boot option of "drm.debug=0x05", we can get the debug info by
122 * using the DRM_DEBUG_KMS and DRM_DEBUG.
123 */
124
125 extern void drm_ut_debug_printk(unsigned int request_level,
126 const char *prefix,
127 const char *function_name,
128 const char *format, ...);
129 /***********************************************************************/
130 /** \name DRM template customization defaults */
131 /*@{*/
132
133 /* driver capabilities and requirements mask */
134 #define DRIVER_USE_AGP 0x1
135 #define DRIVER_REQUIRE_AGP 0x2
136 #define DRIVER_USE_MTRR 0x4
137 #define DRIVER_PCI_DMA 0x8
138 #define DRIVER_SG 0x10
139 #define DRIVER_HAVE_DMA 0x20
140 #define DRIVER_HAVE_IRQ 0x40
141 #define DRIVER_IRQ_SHARED 0x80
142 #define DRIVER_IRQ_VBL 0x100
143 #define DRIVER_DMA_QUEUE 0x200
144 #define DRIVER_FB_DMA 0x400
145 #define DRIVER_IRQ_VBL2 0x800
146 #define DRIVER_GEM 0x1000
147 #define DRIVER_MODESET 0x2000
148
149 #define DRIVER_BUS_PCI 0x1
150 #define DRIVER_BUS_PLATFORM 0x2
151 #define DRIVER_BUS_USB 0x3
152
153 /***********************************************************************/
154 /** \name Begin the DRM... */
155 /*@{*/
156
157 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
158 also include looping detection. */
159
160 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
161 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
162 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
163 #define DRM_LOOPING_LIMIT 5000000
164 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
165 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
166
167 #define DRM_FLAG_DEBUG 0x01
168
169 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
170 #define DRM_MAP_HASH_OFFSET 0x10000000
171
172 /*@}*/
173
174 /***********************************************************************/
175 /** \name Macros to make printk easier */
176 /*@{*/
177
178 /**
179 * Error output.
180 *
181 * \param fmt printf() like format string.
182 * \param arg arguments
183 */
184 #define DRM_ERROR(fmt, arg...) \
185 printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __func__ , ##arg)
186
187 /**
188 * Memory error output.
189 *
190 * \param area memory area where the error occurred.
191 * \param fmt printf() like format string.
192 * \param arg arguments
193 */
194 #define DRM_MEM_ERROR(area, fmt, arg...) \
195 printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __func__, \
196 drm_mem_stats[area].name , ##arg)
197
198 #define DRM_INFO(fmt, arg...) printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
199
200 /**
201 * Debug output.
202 *
203 * \param fmt printf() like format string.
204 * \param arg arguments
205 */
206 #if DRM_DEBUG_CODE
207 #define DRM_DEBUG(fmt, args...) \
208 do { \
209 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
210 __func__, fmt, ##args); \
211 } while (0)
212
213 #define DRM_DEBUG_DRIVER(fmt, args...) \
214 do { \
215 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
216 __func__, fmt, ##args); \
217 } while (0)
218 #define DRM_DEBUG_KMS(fmt, args...) \
219 do { \
220 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
221 __func__, fmt, ##args); \
222 } while (0)
223 #define DRM_LOG(fmt, args...) \
224 do { \
225 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
226 NULL, fmt, ##args); \
227 } while (0)
228 #define DRM_LOG_KMS(fmt, args...) \
229 do { \
230 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
231 NULL, fmt, ##args); \
232 } while (0)
233 #define DRM_LOG_MODE(fmt, args...) \
234 do { \
235 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
236 NULL, fmt, ##args); \
237 } while (0)
238 #define DRM_LOG_DRIVER(fmt, args...) \
239 do { \
240 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
241 NULL, fmt, ##args); \
242 } while (0)
243 #else
244 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
245 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
246 #define DRM_DEBUG(fmt, arg...) do { } while (0)
247 #define DRM_LOG(fmt, arg...) do { } while (0)
248 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
249 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
250 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
251
252 #endif
253
254 /*@}*/
255
256 /***********************************************************************/
257 /** \name Internal types and structures */
258 /*@{*/
259
260 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
261
262 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
263 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
264
265 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
266
267 /**
268 * Test that the hardware lock is held by the caller, returning otherwise.
269 *
270 * \param dev DRM device.
271 * \param filp file pointer of the caller.
272 */
273 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
274 do { \
275 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
276 _file_priv->master->lock.file_priv != _file_priv) { \
277 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
278 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
279 _file_priv->master->lock.file_priv, _file_priv); \
280 return -EINVAL; \
281 } \
282 } while (0)
283
284 /**
285 * Ioctl function type.
286 *
287 * \param inode device inode.
288 * \param file_priv DRM file private pointer.
289 * \param cmd command.
290 * \param arg argument.
291 */
292 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
293 struct drm_file *file_priv);
294
295 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
296 unsigned long arg);
297
298 #define DRM_IOCTL_NR(n) _IOC_NR(n)
299 #define DRM_MAJOR 226
300
301 #define DRM_AUTH 0x1
302 #define DRM_MASTER 0x2
303 #define DRM_ROOT_ONLY 0x4
304 #define DRM_CONTROL_ALLOW 0x8
305 #define DRM_UNLOCKED 0x10
306
307 struct drm_ioctl_desc {
308 unsigned int cmd;
309 int flags;
310 drm_ioctl_t *func;
311 unsigned int cmd_drv;
312 };
313
314 /**
315 * Creates a driver or general drm_ioctl_desc array entry for the given
316 * ioctl, for use by drm_ioctl().
317 */
318
319 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
320 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl}
321
322 struct drm_magic_entry {
323 struct list_head head;
324 struct drm_hash_item hash_item;
325 struct drm_file *priv;
326 };
327
328 struct drm_vma_entry {
329 struct list_head head;
330 struct vm_area_struct *vma;
331 pid_t pid;
332 };
333
334 /**
335 * DMA buffer.
336 */
337 struct drm_buf {
338 int idx; /**< Index into master buflist */
339 int total; /**< Buffer size */
340 int order; /**< log-base-2(total) */
341 int used; /**< Amount of buffer in use (for DMA) */
342 unsigned long offset; /**< Byte offset (used internally) */
343 void *address; /**< Address of buffer */
344 unsigned long bus_address; /**< Bus address of buffer */
345 struct drm_buf *next; /**< Kernel-only: used for free list */
346 __volatile__ int waiting; /**< On kernel DMA queue */
347 __volatile__ int pending; /**< On hardware DMA queue */
348 wait_queue_head_t dma_wait; /**< Processes waiting */
349 struct drm_file *file_priv; /**< Private of holding file descr */
350 int context; /**< Kernel queue for this buffer */
351 int while_locked; /**< Dispatch this buffer while locked */
352 enum {
353 DRM_LIST_NONE = 0,
354 DRM_LIST_FREE = 1,
355 DRM_LIST_WAIT = 2,
356 DRM_LIST_PEND = 3,
357 DRM_LIST_PRIO = 4,
358 DRM_LIST_RECLAIM = 5
359 } list; /**< Which list we're on */
360
361 int dev_priv_size; /**< Size of buffer private storage */
362 void *dev_private; /**< Per-buffer private storage */
363 };
364
365 /** bufs is one longer than it has to be */
366 struct drm_waitlist {
367 int count; /**< Number of possible buffers */
368 struct drm_buf **bufs; /**< List of pointers to buffers */
369 struct drm_buf **rp; /**< Read pointer */
370 struct drm_buf **wp; /**< Write pointer */
371 struct drm_buf **end; /**< End pointer */
372 spinlock_t read_lock;
373 spinlock_t write_lock;
374 };
375
376 struct drm_freelist {
377 int initialized; /**< Freelist in use */
378 atomic_t count; /**< Number of free buffers */
379 struct drm_buf *next; /**< End pointer */
380
381 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
382 int low_mark; /**< Low water mark */
383 int high_mark; /**< High water mark */
384 atomic_t wfh; /**< If waiting for high mark */
385 spinlock_t lock;
386 };
387
388 typedef struct drm_dma_handle {
389 dma_addr_t busaddr;
390 void *vaddr;
391 size_t size;
392 } drm_dma_handle_t;
393
394 /**
395 * Buffer entry. There is one of this for each buffer size order.
396 */
397 struct drm_buf_entry {
398 int buf_size; /**< size */
399 int buf_count; /**< number of buffers */
400 struct drm_buf *buflist; /**< buffer list */
401 int seg_count;
402 int page_order;
403 struct drm_dma_handle **seglist;
404
405 struct drm_freelist freelist;
406 };
407
408 /* Event queued up for userspace to read */
409 struct drm_pending_event {
410 struct drm_event *event;
411 struct list_head link;
412 struct drm_file *file_priv;
413 pid_t pid; /* pid of requester, no guarantee it's valid by the time
414 we deliver the event, for tracing only */
415 void (*destroy)(struct drm_pending_event *event);
416 };
417
418 /** File private data */
419 struct drm_file {
420 int authenticated;
421 pid_t pid;
422 uid_t uid;
423 drm_magic_t magic;
424 unsigned long ioctl_count;
425 struct list_head lhead;
426 struct drm_minor *minor;
427 unsigned long lock_count;
428
429 /** Mapping of mm object handles to object pointers. */
430 struct idr object_idr;
431 /** Lock for synchronization of access to object_idr. */
432 spinlock_t table_lock;
433
434 struct file *filp;
435 void *driver_priv;
436
437 int is_master; /* this file private is a master for a minor */
438 struct drm_master *master; /* master this node is currently associated with
439 N.B. not always minor->master */
440 struct list_head fbs;
441
442 wait_queue_head_t event_wait;
443 struct list_head event_list;
444 int event_space;
445 };
446
447 /** Wait queue */
448 struct drm_queue {
449 atomic_t use_count; /**< Outstanding uses (+1) */
450 atomic_t finalization; /**< Finalization in progress */
451 atomic_t block_count; /**< Count of processes waiting */
452 atomic_t block_read; /**< Queue blocked for reads */
453 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
454 atomic_t block_write; /**< Queue blocked for writes */
455 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
456 atomic_t total_queued; /**< Total queued statistic */
457 atomic_t total_flushed; /**< Total flushes statistic */
458 atomic_t total_locks; /**< Total locks statistics */
459 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
460 struct drm_waitlist waitlist; /**< Pending buffers */
461 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
462 };
463
464 /**
465 * Lock data.
466 */
467 struct drm_lock_data {
468 struct drm_hw_lock *hw_lock; /**< Hardware lock */
469 /** Private of lock holder's file (NULL=kernel) */
470 struct drm_file *file_priv;
471 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
472 unsigned long lock_time; /**< Time of last lock in jiffies */
473 spinlock_t spinlock;
474 uint32_t kernel_waiters;
475 uint32_t user_waiters;
476 int idle_has_lock;
477 };
478
479 /**
480 * DMA data.
481 */
482 struct drm_device_dma {
483
484 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
485 int buf_count; /**< total number of buffers */
486 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
487 int seg_count;
488 int page_count; /**< number of pages */
489 unsigned long *pagelist; /**< page list */
490 unsigned long byte_count;
491 enum {
492 _DRM_DMA_USE_AGP = 0x01,
493 _DRM_DMA_USE_SG = 0x02,
494 _DRM_DMA_USE_FB = 0x04,
495 _DRM_DMA_USE_PCI_RO = 0x08
496 } flags;
497
498 };
499
500 /**
501 * AGP memory entry. Stored as a doubly linked list.
502 */
503 struct drm_agp_mem {
504 unsigned long handle; /**< handle */
505 DRM_AGP_MEM *memory;
506 unsigned long bound; /**< address */
507 int pages;
508 struct list_head head;
509 };
510
511 /**
512 * AGP data.
513 *
514 * \sa drm_agp_init() and drm_device::agp.
515 */
516 struct drm_agp_head {
517 DRM_AGP_KERN agp_info; /**< AGP device information */
518 struct list_head memory;
519 unsigned long mode; /**< AGP mode */
520 struct agp_bridge_data *bridge;
521 int enabled; /**< whether the AGP bus as been enabled */
522 int acquired; /**< whether the AGP device has been acquired */
523 unsigned long base;
524 int agp_mtrr;
525 int cant_use_aperture;
526 unsigned long page_mask;
527 };
528
529 /**
530 * Scatter-gather memory.
531 */
532 struct drm_sg_mem {
533 unsigned long handle;
534 void *virtual;
535 int pages;
536 struct page **pagelist;
537 dma_addr_t *busaddr;
538 };
539
540 struct drm_sigdata {
541 int context;
542 struct drm_hw_lock *lock;
543 };
544
545
546 /**
547 * Kernel side of a mapping
548 */
549 struct drm_local_map {
550 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
551 unsigned long size; /**< Requested physical size (bytes) */
552 enum drm_map_type type; /**< Type of memory to map */
553 enum drm_map_flags flags; /**< Flags */
554 void *handle; /**< User-space: "Handle" to pass to mmap() */
555 /**< Kernel-space: kernel-virtual address */
556 int mtrr; /**< MTRR slot used */
557 };
558
559 typedef struct drm_local_map drm_local_map_t;
560
561 /**
562 * Mappings list
563 */
564 struct drm_map_list {
565 struct list_head head; /**< list head */
566 struct drm_hash_item hash;
567 struct drm_local_map *map; /**< mapping */
568 uint64_t user_token;
569 struct drm_master *master;
570 struct drm_mm_node *file_offset_node; /**< fake offset */
571 };
572
573 /**
574 * Context handle list
575 */
576 struct drm_ctx_list {
577 struct list_head head; /**< list head */
578 drm_context_t handle; /**< context handle */
579 struct drm_file *tag; /**< associated fd private data */
580 };
581
582 /* location of GART table */
583 #define DRM_ATI_GART_MAIN 1
584 #define DRM_ATI_GART_FB 2
585
586 #define DRM_ATI_GART_PCI 1
587 #define DRM_ATI_GART_PCIE 2
588 #define DRM_ATI_GART_IGP 3
589
590 struct drm_ati_pcigart_info {
591 int gart_table_location;
592 int gart_reg_if;
593 void *addr;
594 dma_addr_t bus_addr;
595 dma_addr_t table_mask;
596 struct drm_dma_handle *table_handle;
597 struct drm_local_map mapping;
598 int table_size;
599 };
600
601 /**
602 * GEM specific mm private for tracking GEM objects
603 */
604 struct drm_gem_mm {
605 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */
606 struct drm_open_hash offset_hash; /**< User token hash table for maps */
607 };
608
609 /**
610 * This structure defines the drm_mm memory object, which will be used by the
611 * DRM for its buffer objects.
612 */
613 struct drm_gem_object {
614 /** Reference count of this object */
615 struct kref refcount;
616
617 /** Handle count of this object. Each handle also holds a reference */
618 atomic_t handle_count; /* number of handles on this object */
619
620 /** Related drm device */
621 struct drm_device *dev;
622
623 /** File representing the shmem storage */
624 struct file *filp;
625
626 /* Mapping info for this object */
627 struct drm_map_list map_list;
628
629 /**
630 * Size of the object, in bytes. Immutable over the object's
631 * lifetime.
632 */
633 size_t size;
634
635 /**
636 * Global name for this object, starts at 1. 0 means unnamed.
637 * Access is covered by the object_name_lock in the related drm_device
638 */
639 int name;
640
641 /**
642 * Memory domains. These monitor which caches contain read/write data
643 * related to the object. When transitioning from one set of domains
644 * to another, the driver is called to ensure that caches are suitably
645 * flushed and invalidated
646 */
647 uint32_t read_domains;
648 uint32_t write_domain;
649
650 /**
651 * While validating an exec operation, the
652 * new read/write domain values are computed here.
653 * They will be transferred to the above values
654 * at the point that any cache flushing occurs
655 */
656 uint32_t pending_read_domains;
657 uint32_t pending_write_domain;
658
659 void *driver_private;
660 };
661
662 #include "drm_crtc.h"
663
664 /* per-master structure */
665 struct drm_master {
666
667 struct kref refcount; /* refcount for this master */
668
669 struct list_head head; /**< each minor contains a list of masters */
670 struct drm_minor *minor; /**< link back to minor we are a master for */
671
672 char *unique; /**< Unique identifier: e.g., busid */
673 int unique_len; /**< Length of unique field */
674 int unique_size; /**< amount allocated */
675
676 int blocked; /**< Blocked due to VC switch? */
677
678 /** \name Authentication */
679 /*@{ */
680 struct drm_open_hash magiclist;
681 struct list_head magicfree;
682 /*@} */
683
684 struct drm_lock_data lock; /**< Information on hardware lock */
685
686 void *driver_priv; /**< Private structure for driver to use */
687 };
688
689 /* Size of ringbuffer for vblank timestamps. Just double-buffer
690 * in initial implementation.
691 */
692 #define DRM_VBLANKTIME_RBSIZE 2
693
694 /* Flags and return codes for get_vblank_timestamp() driver function. */
695 #define DRM_CALLED_FROM_VBLIRQ 1
696 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
697 #define DRM_VBLANKTIME_INVBL (1 << 1)
698
699 /* get_scanout_position() return flags */
700 #define DRM_SCANOUTPOS_VALID (1 << 0)
701 #define DRM_SCANOUTPOS_INVBL (1 << 1)
702 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
703
704 struct drm_bus {
705 int bus_type;
706 int (*get_irq)(struct drm_device *dev);
707 const char *(*get_name)(struct drm_device *dev);
708 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
709 int (*set_unique)(struct drm_device *dev, struct drm_master *master,
710 struct drm_unique *unique);
711 int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
712 /* hooks that are for PCI */
713 int (*agp_init)(struct drm_device *dev);
714
715 };
716
717 /**
718 * DRM driver structure. This structure represent the common code for
719 * a family of cards. There will one drm_device for each card present
720 * in this family
721 */
722 struct drm_driver {
723 int (*load) (struct drm_device *, unsigned long flags);
724 int (*firstopen) (struct drm_device *);
725 int (*open) (struct drm_device *, struct drm_file *);
726 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
727 void (*postclose) (struct drm_device *, struct drm_file *);
728 void (*lastclose) (struct drm_device *);
729 int (*unload) (struct drm_device *);
730 int (*suspend) (struct drm_device *, pm_message_t state);
731 int (*resume) (struct drm_device *);
732 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
733 int (*dma_quiescent) (struct drm_device *);
734 int (*context_dtor) (struct drm_device *dev, int context);
735
736 /**
737 * get_vblank_counter - get raw hardware vblank counter
738 * @dev: DRM device
739 * @crtc: counter to fetch
740 *
741 * Driver callback for fetching a raw hardware vblank counter
742 * for @crtc. If a device doesn't have a hardware counter, the
743 * driver can simply return the value of drm_vblank_count and
744 * make the enable_vblank() and disable_vblank() hooks into no-ops,
745 * leaving interrupts enabled at all times.
746 *
747 * Wraparound handling and loss of events due to modesetting is dealt
748 * with in the DRM core code.
749 *
750 * RETURNS
751 * Raw vblank counter value.
752 */
753 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
754
755 /**
756 * enable_vblank - enable vblank interrupt events
757 * @dev: DRM device
758 * @crtc: which irq to enable
759 *
760 * Enable vblank interrupts for @crtc. If the device doesn't have
761 * a hardware vblank counter, this routine should be a no-op, since
762 * interrupts will have to stay on to keep the count accurate.
763 *
764 * RETURNS
765 * Zero on success, appropriate errno if the given @crtc's vblank
766 * interrupt cannot be enabled.
767 */
768 int (*enable_vblank) (struct drm_device *dev, int crtc);
769
770 /**
771 * disable_vblank - disable vblank interrupt events
772 * @dev: DRM device
773 * @crtc: which irq to enable
774 *
775 * Disable vblank interrupts for @crtc. If the device doesn't have
776 * a hardware vblank counter, this routine should be a no-op, since
777 * interrupts will have to stay on to keep the count accurate.
778 */
779 void (*disable_vblank) (struct drm_device *dev, int crtc);
780
781 /**
782 * Called by \c drm_device_is_agp. Typically used to determine if a
783 * card is really attached to AGP or not.
784 *
785 * \param dev DRM device handle
786 *
787 * \returns
788 * One of three values is returned depending on whether or not the
789 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
790 * (return of 1), or may or may not be AGP (return of 2).
791 */
792 int (*device_is_agp) (struct drm_device *dev);
793
794 /**
795 * Called by vblank timestamping code.
796 *
797 * Return the current display scanout position from a crtc.
798 *
799 * \param dev DRM device.
800 * \param crtc Id of the crtc to query.
801 * \param *vpos Target location for current vertical scanout position.
802 * \param *hpos Target location for current horizontal scanout position.
803 *
804 * Returns vpos as a positive number while in active scanout area.
805 * Returns vpos as a negative number inside vblank, counting the number
806 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
807 * until start of active scanout / end of vblank."
808 *
809 * \return Flags, or'ed together as follows:
810 *
811 * DRM_SCANOUTPOS_VALID = Query successful.
812 * DRM_SCANOUTPOS_INVBL = Inside vblank.
813 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
814 * this flag means that returned position may be offset by a constant
815 * but unknown small number of scanlines wrt. real scanout position.
816 *
817 */
818 int (*get_scanout_position) (struct drm_device *dev, int crtc,
819 int *vpos, int *hpos);
820
821 /**
822 * Called by \c drm_get_last_vbltimestamp. Should return a precise
823 * timestamp when the most recent VBLANK interval ended or will end.
824 *
825 * Specifically, the timestamp in @vblank_time should correspond as
826 * closely as possible to the time when the first video scanline of
827 * the video frame after the end of VBLANK will start scanning out,
828 * the time immmediately after end of the VBLANK interval. If the
829 * @crtc is currently inside VBLANK, this will be a time in the future.
830 * If the @crtc is currently scanning out a frame, this will be the
831 * past start time of the current scanout. This is meant to adhere
832 * to the OpenML OML_sync_control extension specification.
833 *
834 * \param dev dev DRM device handle.
835 * \param crtc crtc for which timestamp should be returned.
836 * \param *max_error Maximum allowable timestamp error in nanoseconds.
837 * Implementation should strive to provide timestamp
838 * with an error of at most *max_error nanoseconds.
839 * Returns true upper bound on error for timestamp.
840 * \param *vblank_time Target location for returned vblank timestamp.
841 * \param flags 0 = Defaults, no special treatment needed.
842 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
843 * irq handler. Some drivers need to apply some workarounds
844 * for gpu-specific vblank irq quirks if flag is set.
845 *
846 * \returns
847 * Zero if timestamping isn't supported in current display mode or a
848 * negative number on failure. A positive status code on success,
849 * which describes how the vblank_time timestamp was computed.
850 */
851 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
852 int *max_error,
853 struct timeval *vblank_time,
854 unsigned flags);
855
856 /* these have to be filled in */
857
858 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
859 void (*irq_preinstall) (struct drm_device *dev);
860 int (*irq_postinstall) (struct drm_device *dev);
861 void (*irq_uninstall) (struct drm_device *dev);
862 void (*reclaim_buffers) (struct drm_device *dev,
863 struct drm_file * file_priv);
864 void (*reclaim_buffers_locked) (struct drm_device *dev,
865 struct drm_file *file_priv);
866 void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
867 struct drm_file *file_priv);
868 void (*set_version) (struct drm_device *dev,
869 struct drm_set_version *sv);
870
871 /* Master routines */
872 int (*master_create)(struct drm_device *dev, struct drm_master *master);
873 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
874 /**
875 * master_set is called whenever the minor master is set.
876 * master_drop is called whenever the minor master is dropped.
877 */
878
879 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
880 bool from_open);
881 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
882 bool from_release);
883
884 int (*debugfs_init)(struct drm_minor *minor);
885 void (*debugfs_cleanup)(struct drm_minor *minor);
886
887 /**
888 * Driver-specific constructor for drm_gem_objects, to set up
889 * obj->driver_private.
890 *
891 * Returns 0 on success.
892 */
893 int (*gem_init_object) (struct drm_gem_object *obj);
894 void (*gem_free_object) (struct drm_gem_object *obj);
895
896 /* vga arb irq handler */
897 void (*vgaarb_irq)(struct drm_device *dev, bool state);
898
899 /* dumb alloc support */
900 int (*dumb_create)(struct drm_file *file_priv,
901 struct drm_device *dev,
902 struct drm_mode_create_dumb *args);
903 int (*dumb_map_offset)(struct drm_file *file_priv,
904 struct drm_device *dev, uint32_t handle,
905 uint64_t *offset);
906 int (*dumb_destroy)(struct drm_file *file_priv,
907 struct drm_device *dev,
908 uint32_t handle);
909
910 /* Driver private ops for this object */
911 struct vm_operations_struct *gem_vm_ops;
912
913 int major;
914 int minor;
915 int patchlevel;
916 char *name;
917 char *desc;
918 char *date;
919
920 u32 driver_features;
921 int dev_priv_size;
922 struct drm_ioctl_desc *ioctls;
923 int num_ioctls;
924 struct file_operations fops;
925 union {
926 struct pci_driver *pci;
927 struct platform_device *platform_device;
928 struct usb_driver *usb;
929 } kdriver;
930 struct drm_bus *bus;
931
932 /* List of devices hanging off this driver */
933 struct list_head device_list;
934 };
935
936 #define DRM_MINOR_UNASSIGNED 0
937 #define DRM_MINOR_LEGACY 1
938 #define DRM_MINOR_CONTROL 2
939 #define DRM_MINOR_RENDER 3
940
941
942 /**
943 * debugfs node list. This structure represents a debugfs file to
944 * be created by the drm core
945 */
946 struct drm_debugfs_list {
947 const char *name; /** file name */
948 int (*show)(struct seq_file*, void*); /** show callback */
949 u32 driver_features; /**< Required driver features for this entry */
950 };
951
952 /**
953 * debugfs node structure. This structure represents a debugfs file.
954 */
955 struct drm_debugfs_node {
956 struct list_head list;
957 struct drm_minor *minor;
958 struct drm_debugfs_list *debugfs_ent;
959 struct dentry *dent;
960 };
961
962 /**
963 * Info file list entry. This structure represents a debugfs or proc file to
964 * be created by the drm core
965 */
966 struct drm_info_list {
967 const char *name; /** file name */
968 int (*show)(struct seq_file*, void*); /** show callback */
969 u32 driver_features; /**< Required driver features for this entry */
970 void *data;
971 };
972
973 /**
974 * debugfs node structure. This structure represents a debugfs file.
975 */
976 struct drm_info_node {
977 struct list_head list;
978 struct drm_minor *minor;
979 struct drm_info_list *info_ent;
980 struct dentry *dent;
981 };
982
983 /**
984 * DRM minor structure. This structure represents a drm minor number.
985 */
986 struct drm_minor {
987 int index; /**< Minor device number */
988 int type; /**< Control or render */
989 dev_t device; /**< Device number for mknod */
990 struct device kdev; /**< Linux device */
991 struct drm_device *dev;
992
993 struct proc_dir_entry *proc_root; /**< proc directory entry */
994 struct drm_info_node proc_nodes;
995 struct dentry *debugfs_root;
996 struct drm_info_node debugfs_nodes;
997
998 struct drm_master *master; /* currently active master for this node */
999 struct list_head master_list;
1000 struct drm_mode_group mode_group;
1001 };
1002
1003 struct drm_pending_vblank_event {
1004 struct drm_pending_event base;
1005 int pipe;
1006 struct drm_event_vblank event;
1007 };
1008
1009 /**
1010 * DRM device structure. This structure represent a complete card that
1011 * may contain multiple heads.
1012 */
1013 struct drm_device {
1014 struct list_head driver_item; /**< list of devices per driver */
1015 char *devname; /**< For /proc/interrupts */
1016 int if_version; /**< Highest interface version set */
1017
1018 /** \name Locks */
1019 /*@{ */
1020 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1021 struct mutex struct_mutex; /**< For others */
1022 /*@} */
1023
1024 /** \name Usage Counters */
1025 /*@{ */
1026 int open_count; /**< Outstanding files open */
1027 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
1028 atomic_t vma_count; /**< Outstanding vma areas open */
1029 int buf_use; /**< Buffers in use -- cannot alloc */
1030 atomic_t buf_alloc; /**< Buffer allocation in progress */
1031 /*@} */
1032
1033 /** \name Performance counters */
1034 /*@{ */
1035 unsigned long counters;
1036 enum drm_stat_type types[15];
1037 atomic_t counts[15];
1038 /*@} */
1039
1040 struct list_head filelist;
1041
1042 /** \name Memory management */
1043 /*@{ */
1044 struct list_head maplist; /**< Linked list of regions */
1045 int map_count; /**< Number of mappable regions */
1046 struct drm_open_hash map_hash; /**< User token hash table for maps */
1047
1048 /** \name Context handle management */
1049 /*@{ */
1050 struct list_head ctxlist; /**< Linked list of context handles */
1051 int ctx_count; /**< Number of context handles */
1052 struct mutex ctxlist_mutex; /**< For ctxlist */
1053
1054 struct idr ctx_idr;
1055
1056 struct list_head vmalist; /**< List of vmas (for debugging) */
1057
1058 /*@} */
1059
1060 /** \name DMA queues (contexts) */
1061 /*@{ */
1062 int queue_count; /**< Number of active DMA queues */
1063 int queue_reserved; /**< Number of reserved DMA queues */
1064 int queue_slots; /**< Actual length of queuelist */
1065 struct drm_queue **queuelist; /**< Vector of pointers to DMA queues */
1066 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1067 /*@} */
1068
1069 /** \name Context support */
1070 /*@{ */
1071 int irq_enabled; /**< True if irq handler is enabled */
1072 __volatile__ long context_flag; /**< Context swapping flag */
1073 __volatile__ long interrupt_flag; /**< Interruption handler flag */
1074 __volatile__ long dma_flag; /**< DMA dispatch flag */
1075 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
1076 int last_checked; /**< Last context checked for DMA */
1077 int last_context; /**< Last current context */
1078 unsigned long last_switch; /**< jiffies at last context switch */
1079 /*@} */
1080
1081 struct work_struct work;
1082 /** \name VBLANK IRQ support */
1083 /*@{ */
1084
1085 /*
1086 * At load time, disabling the vblank interrupt won't be allowed since
1087 * old clients may not call the modeset ioctl and therefore misbehave.
1088 * Once the modeset ioctl *has* been called though, we can safely
1089 * disable them when unused.
1090 */
1091 int vblank_disable_allowed;
1092
1093 wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */
1094 atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1095 struct timeval *_vblank_time; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1096 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1097 spinlock_t vbl_lock;
1098 atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */
1099 u32 *last_vblank; /* protected by dev->vbl_lock, used */
1100 /* for wraparound handling */
1101 int *vblank_enabled; /* so we don't call enable more than
1102 once per disable */
1103 int *vblank_inmodeset; /* Display driver is setting mode */
1104 u32 *last_vblank_wait; /* Last vblank seqno waited per CRTC */
1105 struct timer_list vblank_disable_timer;
1106
1107 u32 max_vblank_count; /**< size of vblank counter register */
1108
1109 /**
1110 * List of events
1111 */
1112 struct list_head vblank_event_list;
1113 spinlock_t event_lock;
1114
1115 /*@} */
1116 cycles_t ctx_start;
1117 cycles_t lck_start;
1118
1119 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
1120 wait_queue_head_t buf_readers; /**< Processes waiting to read */
1121 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
1122
1123 struct drm_agp_head *agp; /**< AGP data */
1124
1125 struct device *dev; /**< Device structure */
1126 struct pci_dev *pdev; /**< PCI device structure */
1127 int pci_vendor; /**< PCI vendor id */
1128 int pci_device; /**< PCI device id */
1129 #ifdef __alpha__
1130 struct pci_controller *hose;
1131 #endif
1132
1133 struct platform_device *platformdev; /**< Platform device struture */
1134 struct usb_device *usbdev;
1135
1136 struct drm_sg_mem *sg; /**< Scatter gather memory */
1137 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1138 void *dev_private; /**< device private data */
1139 void *mm_private;
1140 struct address_space *dev_mapping;
1141 struct drm_sigdata sigdata; /**< For block_all_signals */
1142 sigset_t sigmask;
1143
1144 struct drm_driver *driver;
1145 struct drm_local_map *agp_buffer_map;
1146 unsigned int agp_buffer_token;
1147 struct drm_minor *control; /**< Control node for card */
1148 struct drm_minor *primary; /**< render type primary screen head */
1149
1150 struct drm_mode_config mode_config; /**< Current mode config */
1151
1152 /** \name GEM information */
1153 /*@{ */
1154 spinlock_t object_name_lock;
1155 struct idr object_name_idr;
1156 /*@} */
1157 int switch_power_state;
1158 };
1159
1160 #define DRM_SWITCH_POWER_ON 0
1161 #define DRM_SWITCH_POWER_OFF 1
1162 #define DRM_SWITCH_POWER_CHANGING 2
1163
drm_core_check_feature(struct drm_device * dev,int feature)1164 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1165 int feature)
1166 {
1167 return ((dev->driver->driver_features & feature) ? 1 : 0);
1168 }
1169
drm_dev_to_irq(struct drm_device * dev)1170 static inline int drm_dev_to_irq(struct drm_device *dev)
1171 {
1172 return dev->driver->bus->get_irq(dev);
1173 }
1174
1175
1176 #if __OS_HAS_AGP
drm_core_has_AGP(struct drm_device * dev)1177 static inline int drm_core_has_AGP(struct drm_device *dev)
1178 {
1179 return drm_core_check_feature(dev, DRIVER_USE_AGP);
1180 }
1181 #else
1182 #define drm_core_has_AGP(dev) (0)
1183 #endif
1184
1185 #if __OS_HAS_MTRR
drm_core_has_MTRR(struct drm_device * dev)1186 static inline int drm_core_has_MTRR(struct drm_device *dev)
1187 {
1188 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1189 }
1190
1191 #define DRM_MTRR_WC MTRR_TYPE_WRCOMB
1192
drm_mtrr_add(unsigned long offset,unsigned long size,unsigned int flags)1193 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1194 unsigned int flags)
1195 {
1196 return mtrr_add(offset, size, flags, 1);
1197 }
1198
drm_mtrr_del(int handle,unsigned long offset,unsigned long size,unsigned int flags)1199 static inline int drm_mtrr_del(int handle, unsigned long offset,
1200 unsigned long size, unsigned int flags)
1201 {
1202 return mtrr_del(handle, offset, size);
1203 }
1204
1205 #else
1206 #define drm_core_has_MTRR(dev) (0)
1207
1208 #define DRM_MTRR_WC 0
1209
drm_mtrr_add(unsigned long offset,unsigned long size,unsigned int flags)1210 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1211 unsigned int flags)
1212 {
1213 return 0;
1214 }
1215
drm_mtrr_del(int handle,unsigned long offset,unsigned long size,unsigned int flags)1216 static inline int drm_mtrr_del(int handle, unsigned long offset,
1217 unsigned long size, unsigned int flags)
1218 {
1219 return 0;
1220 }
1221 #endif
1222
1223 /******************************************************************/
1224 /** \name Internal function definitions */
1225 /*@{*/
1226
1227 /* Driver support (drm_drv.h) */
1228 extern long drm_ioctl(struct file *filp,
1229 unsigned int cmd, unsigned long arg);
1230 extern long drm_compat_ioctl(struct file *filp,
1231 unsigned int cmd, unsigned long arg);
1232 extern int drm_lastclose(struct drm_device *dev);
1233
1234 /* Device support (drm_fops.h) */
1235 extern struct mutex drm_global_mutex;
1236 extern int drm_open(struct inode *inode, struct file *filp);
1237 extern int drm_stub_open(struct inode *inode, struct file *filp);
1238 extern int drm_fasync(int fd, struct file *filp, int on);
1239 extern ssize_t drm_read(struct file *filp, char __user *buffer,
1240 size_t count, loff_t *offset);
1241 extern int drm_release(struct inode *inode, struct file *filp);
1242
1243 /* Mapping support (drm_vm.h) */
1244 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1245 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1246 extern void drm_vm_open_locked(struct vm_area_struct *vma);
1247 extern void drm_vm_close_locked(struct vm_area_struct *vma);
1248 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1249
1250 /* Memory management support (drm_memory.h) */
1251 #include "drm_memory.h"
1252 extern void drm_mem_init(void);
1253 extern int drm_mem_info(char *buf, char **start, off_t offset,
1254 int request, int *eof, void *data);
1255 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
1256
1257 extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
1258 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
1259 extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
1260 struct page **pages,
1261 unsigned long num_pages,
1262 uint32_t gtt_offset,
1263 uint32_t type);
1264 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
1265
1266 /* Misc. IOCTL support (drm_ioctl.h) */
1267 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1268 struct drm_file *file_priv);
1269 extern int drm_getunique(struct drm_device *dev, void *data,
1270 struct drm_file *file_priv);
1271 extern int drm_setunique(struct drm_device *dev, void *data,
1272 struct drm_file *file_priv);
1273 extern int drm_getmap(struct drm_device *dev, void *data,
1274 struct drm_file *file_priv);
1275 extern int drm_getclient(struct drm_device *dev, void *data,
1276 struct drm_file *file_priv);
1277 extern int drm_getstats(struct drm_device *dev, void *data,
1278 struct drm_file *file_priv);
1279 extern int drm_getcap(struct drm_device *dev, void *data,
1280 struct drm_file *file_priv);
1281 extern int drm_setversion(struct drm_device *dev, void *data,
1282 struct drm_file *file_priv);
1283 extern int drm_noop(struct drm_device *dev, void *data,
1284 struct drm_file *file_priv);
1285
1286 /* Context IOCTL support (drm_context.h) */
1287 extern int drm_resctx(struct drm_device *dev, void *data,
1288 struct drm_file *file_priv);
1289 extern int drm_addctx(struct drm_device *dev, void *data,
1290 struct drm_file *file_priv);
1291 extern int drm_modctx(struct drm_device *dev, void *data,
1292 struct drm_file *file_priv);
1293 extern int drm_getctx(struct drm_device *dev, void *data,
1294 struct drm_file *file_priv);
1295 extern int drm_switchctx(struct drm_device *dev, void *data,
1296 struct drm_file *file_priv);
1297 extern int drm_newctx(struct drm_device *dev, void *data,
1298 struct drm_file *file_priv);
1299 extern int drm_rmctx(struct drm_device *dev, void *data,
1300 struct drm_file *file_priv);
1301
1302 extern int drm_ctxbitmap_init(struct drm_device *dev);
1303 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1304 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1305
1306 extern int drm_setsareactx(struct drm_device *dev, void *data,
1307 struct drm_file *file_priv);
1308 extern int drm_getsareactx(struct drm_device *dev, void *data,
1309 struct drm_file *file_priv);
1310
1311 /* Authentication IOCTL support (drm_auth.h) */
1312 extern int drm_getmagic(struct drm_device *dev, void *data,
1313 struct drm_file *file_priv);
1314 extern int drm_authmagic(struct drm_device *dev, void *data,
1315 struct drm_file *file_priv);
1316
1317 /* Cache management (drm_cache.c) */
1318 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1319
1320 /* Locking IOCTL support (drm_lock.h) */
1321 extern int drm_lock(struct drm_device *dev, void *data,
1322 struct drm_file *file_priv);
1323 extern int drm_unlock(struct drm_device *dev, void *data,
1324 struct drm_file *file_priv);
1325 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1326 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1327 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1328
1329 /*
1330 * These are exported to drivers so that they can implement fencing using
1331 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1332 */
1333
1334 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1335
1336 /* Buffer management support (drm_bufs.h) */
1337 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1338 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1339 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1340 unsigned int size, enum drm_map_type type,
1341 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1342 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1343 struct drm_file *file_priv);
1344 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1345 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1346 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1347 struct drm_file *file_priv);
1348 extern int drm_addbufs(struct drm_device *dev, void *data,
1349 struct drm_file *file_priv);
1350 extern int drm_infobufs(struct drm_device *dev, void *data,
1351 struct drm_file *file_priv);
1352 extern int drm_markbufs(struct drm_device *dev, void *data,
1353 struct drm_file *file_priv);
1354 extern int drm_freebufs(struct drm_device *dev, void *data,
1355 struct drm_file *file_priv);
1356 extern int drm_mapbufs(struct drm_device *dev, void *data,
1357 struct drm_file *file_priv);
1358 extern int drm_order(unsigned long size);
1359
1360 /* DMA support (drm_dma.h) */
1361 extern int drm_dma_setup(struct drm_device *dev);
1362 extern void drm_dma_takedown(struct drm_device *dev);
1363 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1364 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1365 struct drm_file *filp);
1366
1367 /* IRQ support (drm_irq.h) */
1368 extern int drm_control(struct drm_device *dev, void *data,
1369 struct drm_file *file_priv);
1370 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
1371 extern int drm_irq_install(struct drm_device *dev);
1372 extern int drm_irq_uninstall(struct drm_device *dev);
1373 extern void drm_driver_irq_preinstall(struct drm_device *dev);
1374 extern void drm_driver_irq_postinstall(struct drm_device *dev);
1375 extern void drm_driver_irq_uninstall(struct drm_device *dev);
1376
1377 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1378 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1379 struct drm_file *filp);
1380 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1381 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1382 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1383 struct timeval *vblanktime);
1384 extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1385 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1386 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1387 extern void drm_vblank_off(struct drm_device *dev, int crtc);
1388 extern void drm_vblank_cleanup(struct drm_device *dev);
1389 extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1390 struct timeval *tvblank, unsigned flags);
1391 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1392 int crtc, int *max_error,
1393 struct timeval *vblank_time,
1394 unsigned flags,
1395 struct drm_crtc *refcrtc);
1396 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
1397
1398 /* Modesetting support */
1399 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1400 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1401 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1402 struct drm_file *file_priv);
1403
1404 /* AGP/GART support (drm_agpsupport.h) */
1405 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1406 extern int drm_agp_acquire(struct drm_device *dev);
1407 extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1408 struct drm_file *file_priv);
1409 extern int drm_agp_release(struct drm_device *dev);
1410 extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1411 struct drm_file *file_priv);
1412 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1413 extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1414 struct drm_file *file_priv);
1415 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1416 extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1417 struct drm_file *file_priv);
1418 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1419 extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1420 struct drm_file *file_priv);
1421 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1422 extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1423 struct drm_file *file_priv);
1424 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1425 extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1426 struct drm_file *file_priv);
1427 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1428 extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1429 struct drm_file *file_priv);
1430
1431 /* Stub support (drm_stub.h) */
1432 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1433 struct drm_file *file_priv);
1434 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1435 struct drm_file *file_priv);
1436 struct drm_master *drm_master_create(struct drm_minor *minor);
1437 extern struct drm_master *drm_master_get(struct drm_master *master);
1438 extern void drm_master_put(struct drm_master **master);
1439
1440 extern void drm_put_dev(struct drm_device *dev);
1441 extern int drm_put_minor(struct drm_minor **minor);
1442 extern unsigned int drm_debug;
1443
1444 extern unsigned int drm_vblank_offdelay;
1445 extern unsigned int drm_timestamp_precision;
1446
1447 extern struct class *drm_class;
1448 extern struct proc_dir_entry *drm_proc_root;
1449 extern struct dentry *drm_debugfs_root;
1450
1451 extern struct idr drm_minors_idr;
1452
1453 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1454
1455 /* Proc support (drm_proc.h) */
1456 extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1457 struct proc_dir_entry *root);
1458 extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1459
1460 /* Debugfs support */
1461 #if defined(CONFIG_DEBUG_FS)
1462 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1463 struct dentry *root);
1464 extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1465 struct dentry *root, struct drm_minor *minor);
1466 extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1467 struct drm_minor *minor);
1468 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1469 #endif
1470
1471 /* Info file support */
1472 extern int drm_name_info(struct seq_file *m, void *data);
1473 extern int drm_vm_info(struct seq_file *m, void *data);
1474 extern int drm_queues_info(struct seq_file *m, void *data);
1475 extern int drm_bufs_info(struct seq_file *m, void *data);
1476 extern int drm_vblank_info(struct seq_file *m, void *data);
1477 extern int drm_clients_info(struct seq_file *m, void* data);
1478 extern int drm_gem_name_info(struct seq_file *m, void *data);
1479
1480 #if DRM_DEBUG_CODE
1481 extern int drm_vma_info(struct seq_file *m, void *data);
1482 #endif
1483
1484 /* Scatter Gather Support (drm_scatter.h) */
1485 extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1486 extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1487 struct drm_file *file_priv);
1488 extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1489 extern int drm_sg_free(struct drm_device *dev, void *data,
1490 struct drm_file *file_priv);
1491
1492 /* ATI PCIGART support (ati_pcigart.h) */
1493 extern int drm_ati_pcigart_init(struct drm_device *dev,
1494 struct drm_ati_pcigart_info * gart_info);
1495 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1496 struct drm_ati_pcigart_info * gart_info);
1497
1498 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1499 size_t align);
1500 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1501 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1502
1503 /* sysfs support (drm_sysfs.c) */
1504 struct drm_sysfs_class;
1505 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1506 extern void drm_sysfs_destroy(void);
1507 extern int drm_sysfs_device_add(struct drm_minor *minor);
1508 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1509 extern void drm_sysfs_device_remove(struct drm_minor *minor);
1510 extern char *drm_get_connector_status_name(enum drm_connector_status status);
1511 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1512 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1513
1514 /* Graphics Execution Manager library functions (drm_gem.c) */
1515 int drm_gem_init(struct drm_device *dev);
1516 void drm_gem_destroy(struct drm_device *dev);
1517 void drm_gem_object_release(struct drm_gem_object *obj);
1518 void drm_gem_object_free(struct kref *kref);
1519 struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1520 size_t size);
1521 int drm_gem_object_init(struct drm_device *dev,
1522 struct drm_gem_object *obj, size_t size);
1523 void drm_gem_object_handle_free(struct drm_gem_object *obj);
1524 void drm_gem_vm_open(struct vm_area_struct *vma);
1525 void drm_gem_vm_close(struct vm_area_struct *vma);
1526 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1527
1528 #include "drm_global.h"
1529
1530 static inline void
drm_gem_object_reference(struct drm_gem_object * obj)1531 drm_gem_object_reference(struct drm_gem_object *obj)
1532 {
1533 kref_get(&obj->refcount);
1534 }
1535
1536 static inline void
drm_gem_object_unreference(struct drm_gem_object * obj)1537 drm_gem_object_unreference(struct drm_gem_object *obj)
1538 {
1539 if (obj != NULL)
1540 kref_put(&obj->refcount, drm_gem_object_free);
1541 }
1542
1543 static inline void
drm_gem_object_unreference_unlocked(struct drm_gem_object * obj)1544 drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1545 {
1546 if (obj != NULL) {
1547 struct drm_device *dev = obj->dev;
1548 mutex_lock(&dev->struct_mutex);
1549 kref_put(&obj->refcount, drm_gem_object_free);
1550 mutex_unlock(&dev->struct_mutex);
1551 }
1552 }
1553
1554 int drm_gem_handle_create(struct drm_file *file_priv,
1555 struct drm_gem_object *obj,
1556 u32 *handlep);
1557 int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
1558
1559 static inline void
drm_gem_object_handle_reference(struct drm_gem_object * obj)1560 drm_gem_object_handle_reference(struct drm_gem_object *obj)
1561 {
1562 drm_gem_object_reference(obj);
1563 atomic_inc(&obj->handle_count);
1564 }
1565
1566 static inline void
drm_gem_object_handle_unreference(struct drm_gem_object * obj)1567 drm_gem_object_handle_unreference(struct drm_gem_object *obj)
1568 {
1569 if (obj == NULL)
1570 return;
1571
1572 if (atomic_read(&obj->handle_count) == 0)
1573 return;
1574 /*
1575 * Must bump handle count first as this may be the last
1576 * ref, in which case the object would disappear before we
1577 * checked for a name
1578 */
1579 if (atomic_dec_and_test(&obj->handle_count))
1580 drm_gem_object_handle_free(obj);
1581 drm_gem_object_unreference(obj);
1582 }
1583
1584 static inline void
drm_gem_object_handle_unreference_unlocked(struct drm_gem_object * obj)1585 drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj)
1586 {
1587 if (obj == NULL)
1588 return;
1589
1590 if (atomic_read(&obj->handle_count) == 0)
1591 return;
1592
1593 /*
1594 * Must bump handle count first as this may be the last
1595 * ref, in which case the object would disappear before we
1596 * checked for a name
1597 */
1598
1599 if (atomic_dec_and_test(&obj->handle_count))
1600 drm_gem_object_handle_free(obj);
1601 drm_gem_object_unreference_unlocked(obj);
1602 }
1603
1604 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1605 struct drm_file *filp,
1606 u32 handle);
1607 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1608 struct drm_file *file_priv);
1609 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1610 struct drm_file *file_priv);
1611 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1612 struct drm_file *file_priv);
1613 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1614 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1615
1616 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1617 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1618 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1619
drm_core_findmap(struct drm_device * dev,unsigned int token)1620 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1621 unsigned int token)
1622 {
1623 struct drm_map_list *_entry;
1624 list_for_each_entry(_entry, &dev->maplist, head)
1625 if (_entry->user_token == token)
1626 return _entry->map;
1627 return NULL;
1628 }
1629
drm_core_dropmap(struct drm_local_map * map)1630 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1631 {
1632 }
1633
1634 #include "drm_mem_util.h"
1635
1636 extern int drm_fill_in_dev(struct drm_device *dev,
1637 const struct pci_device_id *ent,
1638 struct drm_driver *driver);
1639 int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
1640 /*@}*/
1641
1642 /* PCI section */
drm_pci_device_is_agp(struct drm_device * dev)1643 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1644 {
1645 if (dev->driver->device_is_agp != NULL) {
1646 int err = (*dev->driver->device_is_agp) (dev);
1647
1648 if (err != 2) {
1649 return err;
1650 }
1651 }
1652
1653 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1654 }
1655
1656
drm_pci_device_is_pcie(struct drm_device * dev)1657 static __inline__ int drm_pci_device_is_pcie(struct drm_device *dev)
1658 {
1659 return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1660 }
1661
1662
1663 extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1664 extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1665 extern int drm_get_pci_dev(struct pci_dev *pdev,
1666 const struct pci_device_id *ent,
1667 struct drm_driver *driver);
1668
1669
1670 /* platform section */
1671 extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1672 extern void drm_platform_exit(struct drm_driver *driver, struct platform_device *platform_device);
1673
1674 extern int drm_get_platform_dev(struct platform_device *pdev,
1675 struct drm_driver *driver);
1676
1677 #endif /* __KERNEL__ */
1678 #endif
1679