Loading...
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
83struct drm_file;
84struct 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
125extern __attribute__((format (printf, 4, 5)))
126void drm_ut_debug_printk(unsigned int request_level,
127 const char *prefix,
128 const char *function_name,
129 const char *format, ...);
130extern __attribute__((format (printf, 2, 3)))
131int drm_err(const char *func, const char *format, ...);
132
133/***********************************************************************/
134/** \name DRM template customization defaults */
135/*@{*/
136
137/* driver capabilities and requirements mask */
138#define DRIVER_USE_AGP 0x1
139#define DRIVER_REQUIRE_AGP 0x2
140#define DRIVER_USE_MTRR 0x4
141#define DRIVER_PCI_DMA 0x8
142#define DRIVER_SG 0x10
143#define DRIVER_HAVE_DMA 0x20
144#define DRIVER_HAVE_IRQ 0x40
145#define DRIVER_IRQ_SHARED 0x80
146#define DRIVER_IRQ_VBL 0x100
147#define DRIVER_DMA_QUEUE 0x200
148#define DRIVER_FB_DMA 0x400
149#define DRIVER_IRQ_VBL2 0x800
150#define DRIVER_GEM 0x1000
151#define DRIVER_MODESET 0x2000
152
153#define DRIVER_BUS_PCI 0x1
154#define DRIVER_BUS_PLATFORM 0x2
155#define DRIVER_BUS_USB 0x3
156
157/***********************************************************************/
158/** \name Begin the DRM... */
159/*@{*/
160
161#define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
162 also include looping detection. */
163
164#define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
165#define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
166#define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
167#define DRM_LOOPING_LIMIT 5000000
168#define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
169#define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
170
171#define DRM_FLAG_DEBUG 0x01
172
173#define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
174#define DRM_MAP_HASH_OFFSET 0x10000000
175
176/*@}*/
177
178/***********************************************************************/
179/** \name Macros to make printk easier */
180/*@{*/
181
182/**
183 * Error output.
184 *
185 * \param fmt printf() like format string.
186 * \param arg arguments
187 */
188#define DRM_ERROR(fmt, ...) \
189 drm_err(__func__, fmt, ##__VA_ARGS__)
190
191#define DRM_INFO(fmt, ...) \
192 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
193
194/**
195 * Debug output.
196 *
197 * \param fmt printf() like format string.
198 * \param arg arguments
199 */
200#if DRM_DEBUG_CODE
201#define DRM_DEBUG(fmt, args...) \
202 do { \
203 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
204 __func__, fmt, ##args); \
205 } while (0)
206
207#define DRM_DEBUG_DRIVER(fmt, args...) \
208 do { \
209 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
210 __func__, fmt, ##args); \
211 } while (0)
212#define DRM_DEBUG_KMS(fmt, args...) \
213 do { \
214 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
215 __func__, fmt, ##args); \
216 } while (0)
217#define DRM_LOG(fmt, args...) \
218 do { \
219 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
220 NULL, fmt, ##args); \
221 } while (0)
222#define DRM_LOG_KMS(fmt, args...) \
223 do { \
224 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
225 NULL, fmt, ##args); \
226 } while (0)
227#define DRM_LOG_MODE(fmt, args...) \
228 do { \
229 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
230 NULL, fmt, ##args); \
231 } while (0)
232#define DRM_LOG_DRIVER(fmt, args...) \
233 do { \
234 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
235 NULL, fmt, ##args); \
236 } while (0)
237#else
238#define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
239#define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
240#define DRM_DEBUG(fmt, arg...) do { } while (0)
241#define DRM_LOG(fmt, arg...) do { } while (0)
242#define DRM_LOG_KMS(fmt, args...) do { } while (0)
243#define DRM_LOG_MODE(fmt, arg...) do { } while (0)
244#define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
245
246#endif
247
248/*@}*/
249
250/***********************************************************************/
251/** \name Internal types and structures */
252/*@{*/
253
254#define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
255
256#define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
257#define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
258
259#define DRM_IF_VERSION(maj, min) (maj << 16 | min)
260
261/**
262 * Test that the hardware lock is held by the caller, returning otherwise.
263 *
264 * \param dev DRM device.
265 * \param filp file pointer of the caller.
266 */
267#define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
268do { \
269 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
270 _file_priv->master->lock.file_priv != _file_priv) { \
271 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
272 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
273 _file_priv->master->lock.file_priv, _file_priv); \
274 return -EINVAL; \
275 } \
276} while (0)
277
278/**
279 * Ioctl function type.
280 *
281 * \param inode device inode.
282 * \param file_priv DRM file private pointer.
283 * \param cmd command.
284 * \param arg argument.
285 */
286typedef int drm_ioctl_t(struct drm_device *dev, void *data,
287 struct drm_file *file_priv);
288
289typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
290 unsigned long arg);
291
292#define DRM_IOCTL_NR(n) _IOC_NR(n)
293#define DRM_MAJOR 226
294
295#define DRM_AUTH 0x1
296#define DRM_MASTER 0x2
297#define DRM_ROOT_ONLY 0x4
298#define DRM_CONTROL_ALLOW 0x8
299#define DRM_UNLOCKED 0x10
300
301struct drm_ioctl_desc {
302 unsigned int cmd;
303 int flags;
304 drm_ioctl_t *func;
305 unsigned int cmd_drv;
306};
307
308/**
309 * Creates a driver or general drm_ioctl_desc array entry for the given
310 * ioctl, for use by drm_ioctl().
311 */
312
313#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
314 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl}
315
316struct drm_magic_entry {
317 struct list_head head;
318 struct drm_hash_item hash_item;
319 struct drm_file *priv;
320};
321
322struct drm_vma_entry {
323 struct list_head head;
324 struct vm_area_struct *vma;
325 pid_t pid;
326};
327
328/**
329 * DMA buffer.
330 */
331struct drm_buf {
332 int idx; /**< Index into master buflist */
333 int total; /**< Buffer size */
334 int order; /**< log-base-2(total) */
335 int used; /**< Amount of buffer in use (for DMA) */
336 unsigned long offset; /**< Byte offset (used internally) */
337 void *address; /**< Address of buffer */
338 unsigned long bus_address; /**< Bus address of buffer */
339 struct drm_buf *next; /**< Kernel-only: used for free list */
340 __volatile__ int waiting; /**< On kernel DMA queue */
341 __volatile__ int pending; /**< On hardware DMA queue */
342 wait_queue_head_t dma_wait; /**< Processes waiting */
343 struct drm_file *file_priv; /**< Private of holding file descr */
344 int context; /**< Kernel queue for this buffer */
345 int while_locked; /**< Dispatch this buffer while locked */
346 enum {
347 DRM_LIST_NONE = 0,
348 DRM_LIST_FREE = 1,
349 DRM_LIST_WAIT = 2,
350 DRM_LIST_PEND = 3,
351 DRM_LIST_PRIO = 4,
352 DRM_LIST_RECLAIM = 5
353 } list; /**< Which list we're on */
354
355 int dev_priv_size; /**< Size of buffer private storage */
356 void *dev_private; /**< Per-buffer private storage */
357};
358
359/** bufs is one longer than it has to be */
360struct drm_waitlist {
361 int count; /**< Number of possible buffers */
362 struct drm_buf **bufs; /**< List of pointers to buffers */
363 struct drm_buf **rp; /**< Read pointer */
364 struct drm_buf **wp; /**< Write pointer */
365 struct drm_buf **end; /**< End pointer */
366 spinlock_t read_lock;
367 spinlock_t write_lock;
368};
369
370struct drm_freelist {
371 int initialized; /**< Freelist in use */
372 atomic_t count; /**< Number of free buffers */
373 struct drm_buf *next; /**< End pointer */
374
375 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
376 int low_mark; /**< Low water mark */
377 int high_mark; /**< High water mark */
378 atomic_t wfh; /**< If waiting for high mark */
379 spinlock_t lock;
380};
381
382typedef struct drm_dma_handle {
383 dma_addr_t busaddr;
384 void *vaddr;
385 size_t size;
386} drm_dma_handle_t;
387
388/**
389 * Buffer entry. There is one of this for each buffer size order.
390 */
391struct drm_buf_entry {
392 int buf_size; /**< size */
393 int buf_count; /**< number of buffers */
394 struct drm_buf *buflist; /**< buffer list */
395 int seg_count;
396 int page_order;
397 struct drm_dma_handle **seglist;
398
399 struct drm_freelist freelist;
400};
401
402/* Event queued up for userspace to read */
403struct drm_pending_event {
404 struct drm_event *event;
405 struct list_head link;
406 struct drm_file *file_priv;
407 pid_t pid; /* pid of requester, no guarantee it's valid by the time
408 we deliver the event, for tracing only */
409 void (*destroy)(struct drm_pending_event *event);
410};
411
412/** File private data */
413struct drm_file {
414 int authenticated;
415 pid_t pid;
416 uid_t uid;
417 drm_magic_t magic;
418 unsigned long ioctl_count;
419 struct list_head lhead;
420 struct drm_minor *minor;
421 unsigned long lock_count;
422
423 /** Mapping of mm object handles to object pointers. */
424 struct idr object_idr;
425 /** Lock for synchronization of access to object_idr. */
426 spinlock_t table_lock;
427
428 struct file *filp;
429 void *driver_priv;
430
431 int is_master; /* this file private is a master for a minor */
432 struct drm_master *master; /* master this node is currently associated with
433 N.B. not always minor->master */
434 struct list_head fbs;
435
436 wait_queue_head_t event_wait;
437 struct list_head event_list;
438 int event_space;
439};
440
441/** Wait queue */
442struct drm_queue {
443 atomic_t use_count; /**< Outstanding uses (+1) */
444 atomic_t finalization; /**< Finalization in progress */
445 atomic_t block_count; /**< Count of processes waiting */
446 atomic_t block_read; /**< Queue blocked for reads */
447 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
448 atomic_t block_write; /**< Queue blocked for writes */
449 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
450 atomic_t total_queued; /**< Total queued statistic */
451 atomic_t total_flushed; /**< Total flushes statistic */
452 atomic_t total_locks; /**< Total locks statistics */
453 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
454 struct drm_waitlist waitlist; /**< Pending buffers */
455 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
456};
457
458/**
459 * Lock data.
460 */
461struct drm_lock_data {
462 struct drm_hw_lock *hw_lock; /**< Hardware lock */
463 /** Private of lock holder's file (NULL=kernel) */
464 struct drm_file *file_priv;
465 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
466 unsigned long lock_time; /**< Time of last lock in jiffies */
467 spinlock_t spinlock;
468 uint32_t kernel_waiters;
469 uint32_t user_waiters;
470 int idle_has_lock;
471};
472
473/**
474 * DMA data.
475 */
476struct drm_device_dma {
477
478 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
479 int buf_count; /**< total number of buffers */
480 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
481 int seg_count;
482 int page_count; /**< number of pages */
483 unsigned long *pagelist; /**< page list */
484 unsigned long byte_count;
485 enum {
486 _DRM_DMA_USE_AGP = 0x01,
487 _DRM_DMA_USE_SG = 0x02,
488 _DRM_DMA_USE_FB = 0x04,
489 _DRM_DMA_USE_PCI_RO = 0x08
490 } flags;
491
492};
493
494/**
495 * AGP memory entry. Stored as a doubly linked list.
496 */
497struct drm_agp_mem {
498 unsigned long handle; /**< handle */
499 DRM_AGP_MEM *memory;
500 unsigned long bound; /**< address */
501 int pages;
502 struct list_head head;
503};
504
505/**
506 * AGP data.
507 *
508 * \sa drm_agp_init() and drm_device::agp.
509 */
510struct drm_agp_head {
511 DRM_AGP_KERN agp_info; /**< AGP device information */
512 struct list_head memory;
513 unsigned long mode; /**< AGP mode */
514 struct agp_bridge_data *bridge;
515 int enabled; /**< whether the AGP bus as been enabled */
516 int acquired; /**< whether the AGP device has been acquired */
517 unsigned long base;
518 int agp_mtrr;
519 int cant_use_aperture;
520 unsigned long page_mask;
521};
522
523/**
524 * Scatter-gather memory.
525 */
526struct drm_sg_mem {
527 unsigned long handle;
528 void *virtual;
529 int pages;
530 struct page **pagelist;
531 dma_addr_t *busaddr;
532};
533
534struct drm_sigdata {
535 int context;
536 struct drm_hw_lock *lock;
537};
538
539
540/**
541 * Kernel side of a mapping
542 */
543struct drm_local_map {
544 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
545 unsigned long size; /**< Requested physical size (bytes) */
546 enum drm_map_type type; /**< Type of memory to map */
547 enum drm_map_flags flags; /**< Flags */
548 void *handle; /**< User-space: "Handle" to pass to mmap() */
549 /**< Kernel-space: kernel-virtual address */
550 int mtrr; /**< MTRR slot used */
551};
552
553typedef struct drm_local_map drm_local_map_t;
554
555/**
556 * Mappings list
557 */
558struct drm_map_list {
559 struct list_head head; /**< list head */
560 struct drm_hash_item hash;
561 struct drm_local_map *map; /**< mapping */
562 uint64_t user_token;
563 struct drm_master *master;
564 struct drm_mm_node *file_offset_node; /**< fake offset */
565};
566
567/**
568 * Context handle list
569 */
570struct drm_ctx_list {
571 struct list_head head; /**< list head */
572 drm_context_t handle; /**< context handle */
573 struct drm_file *tag; /**< associated fd private data */
574};
575
576/* location of GART table */
577#define DRM_ATI_GART_MAIN 1
578#define DRM_ATI_GART_FB 2
579
580#define DRM_ATI_GART_PCI 1
581#define DRM_ATI_GART_PCIE 2
582#define DRM_ATI_GART_IGP 3
583
584struct drm_ati_pcigart_info {
585 int gart_table_location;
586 int gart_reg_if;
587 void *addr;
588 dma_addr_t bus_addr;
589 dma_addr_t table_mask;
590 struct drm_dma_handle *table_handle;
591 struct drm_local_map mapping;
592 int table_size;
593};
594
595/**
596 * GEM specific mm private for tracking GEM objects
597 */
598struct drm_gem_mm {
599 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */
600 struct drm_open_hash offset_hash; /**< User token hash table for maps */
601};
602
603/**
604 * This structure defines the drm_mm memory object, which will be used by the
605 * DRM for its buffer objects.
606 */
607struct drm_gem_object {
608 /** Reference count of this object */
609 struct kref refcount;
610
611 /** Handle count of this object. Each handle also holds a reference */
612 atomic_t handle_count; /* number of handles on this object */
613
614 /** Related drm device */
615 struct drm_device *dev;
616
617 /** File representing the shmem storage */
618 struct file *filp;
619
620 /* Mapping info for this object */
621 struct drm_map_list map_list;
622
623 /**
624 * Size of the object, in bytes. Immutable over the object's
625 * lifetime.
626 */
627 size_t size;
628
629 /**
630 * Global name for this object, starts at 1. 0 means unnamed.
631 * Access is covered by the object_name_lock in the related drm_device
632 */
633 int name;
634
635 /**
636 * Memory domains. These monitor which caches contain read/write data
637 * related to the object. When transitioning from one set of domains
638 * to another, the driver is called to ensure that caches are suitably
639 * flushed and invalidated
640 */
641 uint32_t read_domains;
642 uint32_t write_domain;
643
644 /**
645 * While validating an exec operation, the
646 * new read/write domain values are computed here.
647 * They will be transferred to the above values
648 * at the point that any cache flushing occurs
649 */
650 uint32_t pending_read_domains;
651 uint32_t pending_write_domain;
652
653 void *driver_private;
654};
655
656#include "drm_crtc.h"
657
658/* per-master structure */
659struct drm_master {
660
661 struct kref refcount; /* refcount for this master */
662
663 struct list_head head; /**< each minor contains a list of masters */
664 struct drm_minor *minor; /**< link back to minor we are a master for */
665
666 char *unique; /**< Unique identifier: e.g., busid */
667 int unique_len; /**< Length of unique field */
668 int unique_size; /**< amount allocated */
669
670 int blocked; /**< Blocked due to VC switch? */
671
672 /** \name Authentication */
673 /*@{ */
674 struct drm_open_hash magiclist;
675 struct list_head magicfree;
676 /*@} */
677
678 struct drm_lock_data lock; /**< Information on hardware lock */
679
680 void *driver_priv; /**< Private structure for driver to use */
681};
682
683/* Size of ringbuffer for vblank timestamps. Just double-buffer
684 * in initial implementation.
685 */
686#define DRM_VBLANKTIME_RBSIZE 2
687
688/* Flags and return codes for get_vblank_timestamp() driver function. */
689#define DRM_CALLED_FROM_VBLIRQ 1
690#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
691#define DRM_VBLANKTIME_INVBL (1 << 1)
692
693/* get_scanout_position() return flags */
694#define DRM_SCANOUTPOS_VALID (1 << 0)
695#define DRM_SCANOUTPOS_INVBL (1 << 1)
696#define DRM_SCANOUTPOS_ACCURATE (1 << 2)
697
698struct drm_bus {
699 int bus_type;
700 int (*get_irq)(struct drm_device *dev);
701 const char *(*get_name)(struct drm_device *dev);
702 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
703 int (*set_unique)(struct drm_device *dev, struct drm_master *master,
704 struct drm_unique *unique);
705 int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
706 /* hooks that are for PCI */
707 int (*agp_init)(struct drm_device *dev);
708
709};
710
711/**
712 * DRM driver structure. This structure represent the common code for
713 * a family of cards. There will one drm_device for each card present
714 * in this family
715 */
716struct drm_driver {
717 int (*load) (struct drm_device *, unsigned long flags);
718 int (*firstopen) (struct drm_device *);
719 int (*open) (struct drm_device *, struct drm_file *);
720 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
721 void (*postclose) (struct drm_device *, struct drm_file *);
722 void (*lastclose) (struct drm_device *);
723 int (*unload) (struct drm_device *);
724 int (*suspend) (struct drm_device *, pm_message_t state);
725 int (*resume) (struct drm_device *);
726 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
727 int (*dma_quiescent) (struct drm_device *);
728 int (*context_dtor) (struct drm_device *dev, int context);
729
730 /**
731 * get_vblank_counter - get raw hardware vblank counter
732 * @dev: DRM device
733 * @crtc: counter to fetch
734 *
735 * Driver callback for fetching a raw hardware vblank counter
736 * for @crtc. If a device doesn't have a hardware counter, the
737 * driver can simply return the value of drm_vblank_count and
738 * make the enable_vblank() and disable_vblank() hooks into no-ops,
739 * leaving interrupts enabled at all times.
740 *
741 * Wraparound handling and loss of events due to modesetting is dealt
742 * with in the DRM core code.
743 *
744 * RETURNS
745 * Raw vblank counter value.
746 */
747 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
748
749 /**
750 * enable_vblank - enable vblank interrupt events
751 * @dev: DRM device
752 * @crtc: which irq to enable
753 *
754 * Enable vblank interrupts for @crtc. If the device doesn't have
755 * a hardware vblank counter, this routine should be a no-op, since
756 * interrupts will have to stay on to keep the count accurate.
757 *
758 * RETURNS
759 * Zero on success, appropriate errno if the given @crtc's vblank
760 * interrupt cannot be enabled.
761 */
762 int (*enable_vblank) (struct drm_device *dev, int crtc);
763
764 /**
765 * disable_vblank - disable vblank interrupt events
766 * @dev: DRM device
767 * @crtc: which irq to enable
768 *
769 * Disable vblank interrupts for @crtc. If the device doesn't have
770 * a hardware vblank counter, this routine should be a no-op, since
771 * interrupts will have to stay on to keep the count accurate.
772 */
773 void (*disable_vblank) (struct drm_device *dev, int crtc);
774
775 /**
776 * Called by \c drm_device_is_agp. Typically used to determine if a
777 * card is really attached to AGP or not.
778 *
779 * \param dev DRM device handle
780 *
781 * \returns
782 * One of three values is returned depending on whether or not the
783 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
784 * (return of 1), or may or may not be AGP (return of 2).
785 */
786 int (*device_is_agp) (struct drm_device *dev);
787
788 /**
789 * Called by vblank timestamping code.
790 *
791 * Return the current display scanout position from a crtc.
792 *
793 * \param dev DRM device.
794 * \param crtc Id of the crtc to query.
795 * \param *vpos Target location for current vertical scanout position.
796 * \param *hpos Target location for current horizontal scanout position.
797 *
798 * Returns vpos as a positive number while in active scanout area.
799 * Returns vpos as a negative number inside vblank, counting the number
800 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
801 * until start of active scanout / end of vblank."
802 *
803 * \return Flags, or'ed together as follows:
804 *
805 * DRM_SCANOUTPOS_VALID = Query successful.
806 * DRM_SCANOUTPOS_INVBL = Inside vblank.
807 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
808 * this flag means that returned position may be offset by a constant
809 * but unknown small number of scanlines wrt. real scanout position.
810 *
811 */
812 int (*get_scanout_position) (struct drm_device *dev, int crtc,
813 int *vpos, int *hpos);
814
815 /**
816 * Called by \c drm_get_last_vbltimestamp. Should return a precise
817 * timestamp when the most recent VBLANK interval ended or will end.
818 *
819 * Specifically, the timestamp in @vblank_time should correspond as
820 * closely as possible to the time when the first video scanline of
821 * the video frame after the end of VBLANK will start scanning out,
822 * the time immmediately after end of the VBLANK interval. If the
823 * @crtc is currently inside VBLANK, this will be a time in the future.
824 * If the @crtc is currently scanning out a frame, this will be the
825 * past start time of the current scanout. This is meant to adhere
826 * to the OpenML OML_sync_control extension specification.
827 *
828 * \param dev dev DRM device handle.
829 * \param crtc crtc for which timestamp should be returned.
830 * \param *max_error Maximum allowable timestamp error in nanoseconds.
831 * Implementation should strive to provide timestamp
832 * with an error of at most *max_error nanoseconds.
833 * Returns true upper bound on error for timestamp.
834 * \param *vblank_time Target location for returned vblank timestamp.
835 * \param flags 0 = Defaults, no special treatment needed.
836 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
837 * irq handler. Some drivers need to apply some workarounds
838 * for gpu-specific vblank irq quirks if flag is set.
839 *
840 * \returns
841 * Zero if timestamping isn't supported in current display mode or a
842 * negative number on failure. A positive status code on success,
843 * which describes how the vblank_time timestamp was computed.
844 */
845 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
846 int *max_error,
847 struct timeval *vblank_time,
848 unsigned flags);
849
850 /* these have to be filled in */
851
852 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
853 void (*irq_preinstall) (struct drm_device *dev);
854 int (*irq_postinstall) (struct drm_device *dev);
855 void (*irq_uninstall) (struct drm_device *dev);
856 void (*reclaim_buffers) (struct drm_device *dev,
857 struct drm_file * file_priv);
858 void (*reclaim_buffers_locked) (struct drm_device *dev,
859 struct drm_file *file_priv);
860 void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
861 struct drm_file *file_priv);
862 void (*set_version) (struct drm_device *dev,
863 struct drm_set_version *sv);
864
865 /* Master routines */
866 int (*master_create)(struct drm_device *dev, struct drm_master *master);
867 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
868 /**
869 * master_set is called whenever the minor master is set.
870 * master_drop is called whenever the minor master is dropped.
871 */
872
873 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
874 bool from_open);
875 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
876 bool from_release);
877
878 int (*debugfs_init)(struct drm_minor *minor);
879 void (*debugfs_cleanup)(struct drm_minor *minor);
880
881 /**
882 * Driver-specific constructor for drm_gem_objects, to set up
883 * obj->driver_private.
884 *
885 * Returns 0 on success.
886 */
887 int (*gem_init_object) (struct drm_gem_object *obj);
888 void (*gem_free_object) (struct drm_gem_object *obj);
889 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
890 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
891
892 /* vga arb irq handler */
893 void (*vgaarb_irq)(struct drm_device *dev, bool state);
894
895 /* dumb alloc support */
896 int (*dumb_create)(struct drm_file *file_priv,
897 struct drm_device *dev,
898 struct drm_mode_create_dumb *args);
899 int (*dumb_map_offset)(struct drm_file *file_priv,
900 struct drm_device *dev, uint32_t handle,
901 uint64_t *offset);
902 int (*dumb_destroy)(struct drm_file *file_priv,
903 struct drm_device *dev,
904 uint32_t handle);
905
906 /* Driver private ops for this object */
907 struct vm_operations_struct *gem_vm_ops;
908
909 int major;
910 int minor;
911 int patchlevel;
912 char *name;
913 char *desc;
914 char *date;
915
916 u32 driver_features;
917 int dev_priv_size;
918 struct drm_ioctl_desc *ioctls;
919 int num_ioctls;
920 struct file_operations fops;
921 union {
922 struct pci_driver *pci;
923 struct platform_device *platform_device;
924 struct usb_driver *usb;
925 } kdriver;
926 struct drm_bus *bus;
927
928 /* List of devices hanging off this driver */
929 struct list_head device_list;
930};
931
932#define DRM_MINOR_UNASSIGNED 0
933#define DRM_MINOR_LEGACY 1
934#define DRM_MINOR_CONTROL 2
935#define DRM_MINOR_RENDER 3
936
937
938/**
939 * debugfs node list. This structure represents a debugfs file to
940 * be created by the drm core
941 */
942struct drm_debugfs_list {
943 const char *name; /** file name */
944 int (*show)(struct seq_file*, void*); /** show callback */
945 u32 driver_features; /**< Required driver features for this entry */
946};
947
948/**
949 * debugfs node structure. This structure represents a debugfs file.
950 */
951struct drm_debugfs_node {
952 struct list_head list;
953 struct drm_minor *minor;
954 struct drm_debugfs_list *debugfs_ent;
955 struct dentry *dent;
956};
957
958/**
959 * Info file list entry. This structure represents a debugfs or proc file to
960 * be created by the drm core
961 */
962struct drm_info_list {
963 const char *name; /** file name */
964 int (*show)(struct seq_file*, void*); /** show callback */
965 u32 driver_features; /**< Required driver features for this entry */
966 void *data;
967};
968
969/**
970 * debugfs node structure. This structure represents a debugfs file.
971 */
972struct drm_info_node {
973 struct list_head list;
974 struct drm_minor *minor;
975 struct drm_info_list *info_ent;
976 struct dentry *dent;
977};
978
979/**
980 * DRM minor structure. This structure represents a drm minor number.
981 */
982struct drm_minor {
983 int index; /**< Minor device number */
984 int type; /**< Control or render */
985 dev_t device; /**< Device number for mknod */
986 struct device kdev; /**< Linux device */
987 struct drm_device *dev;
988
989 struct proc_dir_entry *proc_root; /**< proc directory entry */
990 struct drm_info_node proc_nodes;
991 struct dentry *debugfs_root;
992 struct drm_info_node debugfs_nodes;
993
994 struct drm_master *master; /* currently active master for this node */
995 struct list_head master_list;
996 struct drm_mode_group mode_group;
997};
998
999/* mode specified on the command line */
1000struct drm_cmdline_mode {
1001 bool specified;
1002 bool refresh_specified;
1003 bool bpp_specified;
1004 int xres, yres;
1005 int bpp;
1006 int refresh;
1007 bool rb;
1008 bool interlace;
1009 bool cvt;
1010 bool margins;
1011 enum drm_connector_force force;
1012};
1013
1014
1015struct drm_pending_vblank_event {
1016 struct drm_pending_event base;
1017 int pipe;
1018 struct drm_event_vblank event;
1019};
1020
1021/**
1022 * DRM device structure. This structure represent a complete card that
1023 * may contain multiple heads.
1024 */
1025struct drm_device {
1026 struct list_head driver_item; /**< list of devices per driver */
1027 char *devname; /**< For /proc/interrupts */
1028 int if_version; /**< Highest interface version set */
1029
1030 /** \name Locks */
1031 /*@{ */
1032 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1033 struct mutex struct_mutex; /**< For others */
1034 /*@} */
1035
1036 /** \name Usage Counters */
1037 /*@{ */
1038 int open_count; /**< Outstanding files open */
1039 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
1040 atomic_t vma_count; /**< Outstanding vma areas open */
1041 int buf_use; /**< Buffers in use -- cannot alloc */
1042 atomic_t buf_alloc; /**< Buffer allocation in progress */
1043 /*@} */
1044
1045 /** \name Performance counters */
1046 /*@{ */
1047 unsigned long counters;
1048 enum drm_stat_type types[15];
1049 atomic_t counts[15];
1050 /*@} */
1051
1052 struct list_head filelist;
1053
1054 /** \name Memory management */
1055 /*@{ */
1056 struct list_head maplist; /**< Linked list of regions */
1057 int map_count; /**< Number of mappable regions */
1058 struct drm_open_hash map_hash; /**< User token hash table for maps */
1059
1060 /** \name Context handle management */
1061 /*@{ */
1062 struct list_head ctxlist; /**< Linked list of context handles */
1063 int ctx_count; /**< Number of context handles */
1064 struct mutex ctxlist_mutex; /**< For ctxlist */
1065
1066 struct idr ctx_idr;
1067
1068 struct list_head vmalist; /**< List of vmas (for debugging) */
1069
1070 /*@} */
1071
1072 /** \name DMA queues (contexts) */
1073 /*@{ */
1074 int queue_count; /**< Number of active DMA queues */
1075 int queue_reserved; /**< Number of reserved DMA queues */
1076 int queue_slots; /**< Actual length of queuelist */
1077 struct drm_queue **queuelist; /**< Vector of pointers to DMA queues */
1078 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1079 /*@} */
1080
1081 /** \name Context support */
1082 /*@{ */
1083 int irq_enabled; /**< True if irq handler is enabled */
1084 __volatile__ long context_flag; /**< Context swapping flag */
1085 __volatile__ long interrupt_flag; /**< Interruption handler flag */
1086 __volatile__ long dma_flag; /**< DMA dispatch flag */
1087 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
1088 int last_checked; /**< Last context checked for DMA */
1089 int last_context; /**< Last current context */
1090 unsigned long last_switch; /**< jiffies at last context switch */
1091 /*@} */
1092
1093 struct work_struct work;
1094 /** \name VBLANK IRQ support */
1095 /*@{ */
1096
1097 /*
1098 * At load time, disabling the vblank interrupt won't be allowed since
1099 * old clients may not call the modeset ioctl and therefore misbehave.
1100 * Once the modeset ioctl *has* been called though, we can safely
1101 * disable them when unused.
1102 */
1103 int vblank_disable_allowed;
1104
1105 wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */
1106 atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1107 struct timeval *_vblank_time; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1108 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1109 spinlock_t vbl_lock;
1110 atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */
1111 u32 *last_vblank; /* protected by dev->vbl_lock, used */
1112 /* for wraparound handling */
1113 int *vblank_enabled; /* so we don't call enable more than
1114 once per disable */
1115 int *vblank_inmodeset; /* Display driver is setting mode */
1116 u32 *last_vblank_wait; /* Last vblank seqno waited per CRTC */
1117 struct timer_list vblank_disable_timer;
1118
1119 u32 max_vblank_count; /**< size of vblank counter register */
1120
1121 /**
1122 * List of events
1123 */
1124 struct list_head vblank_event_list;
1125 spinlock_t event_lock;
1126
1127 /*@} */
1128 cycles_t ctx_start;
1129 cycles_t lck_start;
1130
1131 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
1132 wait_queue_head_t buf_readers; /**< Processes waiting to read */
1133 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
1134
1135 struct drm_agp_head *agp; /**< AGP data */
1136
1137 struct device *dev; /**< Device structure */
1138 struct pci_dev *pdev; /**< PCI device structure */
1139 int pci_vendor; /**< PCI vendor id */
1140 int pci_device; /**< PCI device id */
1141#ifdef __alpha__
1142 struct pci_controller *hose;
1143#endif
1144
1145 struct platform_device *platformdev; /**< Platform device struture */
1146 struct usb_device *usbdev;
1147
1148 struct drm_sg_mem *sg; /**< Scatter gather memory */
1149 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1150 void *dev_private; /**< device private data */
1151 void *mm_private;
1152 struct address_space *dev_mapping;
1153 struct drm_sigdata sigdata; /**< For block_all_signals */
1154 sigset_t sigmask;
1155
1156 struct drm_driver *driver;
1157 struct drm_local_map *agp_buffer_map;
1158 unsigned int agp_buffer_token;
1159 struct drm_minor *control; /**< Control node for card */
1160 struct drm_minor *primary; /**< render type primary screen head */
1161
1162 struct drm_mode_config mode_config; /**< Current mode config */
1163
1164 /** \name GEM information */
1165 /*@{ */
1166 spinlock_t object_name_lock;
1167 struct idr object_name_idr;
1168 /*@} */
1169 int switch_power_state;
1170};
1171
1172#define DRM_SWITCH_POWER_ON 0
1173#define DRM_SWITCH_POWER_OFF 1
1174#define DRM_SWITCH_POWER_CHANGING 2
1175
1176static __inline__ int drm_core_check_feature(struct drm_device *dev,
1177 int feature)
1178{
1179 return ((dev->driver->driver_features & feature) ? 1 : 0);
1180}
1181
1182static inline int drm_dev_to_irq(struct drm_device *dev)
1183{
1184 return dev->driver->bus->get_irq(dev);
1185}
1186
1187
1188#if __OS_HAS_AGP
1189static inline int drm_core_has_AGP(struct drm_device *dev)
1190{
1191 return drm_core_check_feature(dev, DRIVER_USE_AGP);
1192}
1193#else
1194#define drm_core_has_AGP(dev) (0)
1195#endif
1196
1197#if __OS_HAS_MTRR
1198static inline int drm_core_has_MTRR(struct drm_device *dev)
1199{
1200 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1201}
1202
1203#define DRM_MTRR_WC MTRR_TYPE_WRCOMB
1204
1205static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1206 unsigned int flags)
1207{
1208 return mtrr_add(offset, size, flags, 1);
1209}
1210
1211static inline int drm_mtrr_del(int handle, unsigned long offset,
1212 unsigned long size, unsigned int flags)
1213{
1214 return mtrr_del(handle, offset, size);
1215}
1216
1217#else
1218#define drm_core_has_MTRR(dev) (0)
1219
1220#define DRM_MTRR_WC 0
1221
1222static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1223 unsigned int flags)
1224{
1225 return 0;
1226}
1227
1228static inline int drm_mtrr_del(int handle, unsigned long offset,
1229 unsigned long size, unsigned int flags)
1230{
1231 return 0;
1232}
1233#endif
1234
1235/******************************************************************/
1236/** \name Internal function definitions */
1237/*@{*/
1238
1239 /* Driver support (drm_drv.h) */
1240extern long drm_ioctl(struct file *filp,
1241 unsigned int cmd, unsigned long arg);
1242extern long drm_compat_ioctl(struct file *filp,
1243 unsigned int cmd, unsigned long arg);
1244extern int drm_lastclose(struct drm_device *dev);
1245
1246 /* Device support (drm_fops.h) */
1247extern struct mutex drm_global_mutex;
1248extern int drm_open(struct inode *inode, struct file *filp);
1249extern int drm_stub_open(struct inode *inode, struct file *filp);
1250extern int drm_fasync(int fd, struct file *filp, int on);
1251extern ssize_t drm_read(struct file *filp, char __user *buffer,
1252 size_t count, loff_t *offset);
1253extern int drm_release(struct inode *inode, struct file *filp);
1254
1255 /* Mapping support (drm_vm.h) */
1256extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1257extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1258extern void drm_vm_open_locked(struct vm_area_struct *vma);
1259extern void drm_vm_close_locked(struct vm_area_struct *vma);
1260extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1261
1262 /* Memory management support (drm_memory.h) */
1263#include "drm_memory.h"
1264extern void drm_mem_init(void);
1265extern int drm_mem_info(char *buf, char **start, off_t offset,
1266 int request, int *eof, void *data);
1267extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
1268
1269extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
1270extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
1271extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
1272 struct page **pages,
1273 unsigned long num_pages,
1274 uint32_t gtt_offset,
1275 uint32_t type);
1276extern int drm_unbind_agp(DRM_AGP_MEM * handle);
1277
1278 /* Misc. IOCTL support (drm_ioctl.h) */
1279extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1280 struct drm_file *file_priv);
1281extern int drm_getunique(struct drm_device *dev, void *data,
1282 struct drm_file *file_priv);
1283extern int drm_setunique(struct drm_device *dev, void *data,
1284 struct drm_file *file_priv);
1285extern int drm_getmap(struct drm_device *dev, void *data,
1286 struct drm_file *file_priv);
1287extern int drm_getclient(struct drm_device *dev, void *data,
1288 struct drm_file *file_priv);
1289extern int drm_getstats(struct drm_device *dev, void *data,
1290 struct drm_file *file_priv);
1291extern int drm_getcap(struct drm_device *dev, void *data,
1292 struct drm_file *file_priv);
1293extern int drm_setversion(struct drm_device *dev, void *data,
1294 struct drm_file *file_priv);
1295extern int drm_noop(struct drm_device *dev, void *data,
1296 struct drm_file *file_priv);
1297
1298 /* Context IOCTL support (drm_context.h) */
1299extern int drm_resctx(struct drm_device *dev, void *data,
1300 struct drm_file *file_priv);
1301extern int drm_addctx(struct drm_device *dev, void *data,
1302 struct drm_file *file_priv);
1303extern int drm_modctx(struct drm_device *dev, void *data,
1304 struct drm_file *file_priv);
1305extern int drm_getctx(struct drm_device *dev, void *data,
1306 struct drm_file *file_priv);
1307extern int drm_switchctx(struct drm_device *dev, void *data,
1308 struct drm_file *file_priv);
1309extern int drm_newctx(struct drm_device *dev, void *data,
1310 struct drm_file *file_priv);
1311extern int drm_rmctx(struct drm_device *dev, void *data,
1312 struct drm_file *file_priv);
1313
1314extern int drm_ctxbitmap_init(struct drm_device *dev);
1315extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1316extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1317
1318extern int drm_setsareactx(struct drm_device *dev, void *data,
1319 struct drm_file *file_priv);
1320extern int drm_getsareactx(struct drm_device *dev, void *data,
1321 struct drm_file *file_priv);
1322
1323 /* Authentication IOCTL support (drm_auth.h) */
1324extern int drm_getmagic(struct drm_device *dev, void *data,
1325 struct drm_file *file_priv);
1326extern int drm_authmagic(struct drm_device *dev, void *data,
1327 struct drm_file *file_priv);
1328
1329/* Cache management (drm_cache.c) */
1330void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1331
1332 /* Locking IOCTL support (drm_lock.h) */
1333extern int drm_lock(struct drm_device *dev, void *data,
1334 struct drm_file *file_priv);
1335extern int drm_unlock(struct drm_device *dev, void *data,
1336 struct drm_file *file_priv);
1337extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1338extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1339extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1340
1341/*
1342 * These are exported to drivers so that they can implement fencing using
1343 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1344 */
1345
1346extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1347
1348 /* Buffer management support (drm_bufs.h) */
1349extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1350extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1351extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1352 unsigned int size, enum drm_map_type type,
1353 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1354extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1355 struct drm_file *file_priv);
1356extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1357extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1358extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1359 struct drm_file *file_priv);
1360extern int drm_addbufs(struct drm_device *dev, void *data,
1361 struct drm_file *file_priv);
1362extern int drm_infobufs(struct drm_device *dev, void *data,
1363 struct drm_file *file_priv);
1364extern int drm_markbufs(struct drm_device *dev, void *data,
1365 struct drm_file *file_priv);
1366extern int drm_freebufs(struct drm_device *dev, void *data,
1367 struct drm_file *file_priv);
1368extern int drm_mapbufs(struct drm_device *dev, void *data,
1369 struct drm_file *file_priv);
1370extern int drm_order(unsigned long size);
1371
1372 /* DMA support (drm_dma.h) */
1373extern int drm_dma_setup(struct drm_device *dev);
1374extern void drm_dma_takedown(struct drm_device *dev);
1375extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1376extern void drm_core_reclaim_buffers(struct drm_device *dev,
1377 struct drm_file *filp);
1378
1379 /* IRQ support (drm_irq.h) */
1380extern int drm_control(struct drm_device *dev, void *data,
1381 struct drm_file *file_priv);
1382extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
1383extern int drm_irq_install(struct drm_device *dev);
1384extern int drm_irq_uninstall(struct drm_device *dev);
1385extern void drm_driver_irq_preinstall(struct drm_device *dev);
1386extern void drm_driver_irq_postinstall(struct drm_device *dev);
1387extern void drm_driver_irq_uninstall(struct drm_device *dev);
1388
1389extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1390extern int drm_wait_vblank(struct drm_device *dev, void *data,
1391 struct drm_file *filp);
1392extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1393extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1394extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1395 struct timeval *vblanktime);
1396extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1397extern int drm_vblank_get(struct drm_device *dev, int crtc);
1398extern void drm_vblank_put(struct drm_device *dev, int crtc);
1399extern void drm_vblank_off(struct drm_device *dev, int crtc);
1400extern void drm_vblank_cleanup(struct drm_device *dev);
1401extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1402 struct timeval *tvblank, unsigned flags);
1403extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1404 int crtc, int *max_error,
1405 struct timeval *vblank_time,
1406 unsigned flags,
1407 struct drm_crtc *refcrtc);
1408extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
1409
1410extern bool
1411drm_mode_parse_command_line_for_connector(const char *mode_option,
1412 struct drm_connector *connector,
1413 struct drm_cmdline_mode *mode);
1414
1415extern struct drm_display_mode *
1416drm_mode_create_from_cmdline_mode(struct drm_device *dev,
1417 struct drm_cmdline_mode *cmd);
1418
1419/* Modesetting support */
1420extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1421extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1422extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1423 struct drm_file *file_priv);
1424
1425 /* AGP/GART support (drm_agpsupport.h) */
1426extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1427extern int drm_agp_acquire(struct drm_device *dev);
1428extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1429 struct drm_file *file_priv);
1430extern int drm_agp_release(struct drm_device *dev);
1431extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1432 struct drm_file *file_priv);
1433extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1434extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1435 struct drm_file *file_priv);
1436extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1437extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1438 struct drm_file *file_priv);
1439extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1440extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1441 struct drm_file *file_priv);
1442extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1443extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1444 struct drm_file *file_priv);
1445extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1446extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1447 struct drm_file *file_priv);
1448extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1449extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1450 struct drm_file *file_priv);
1451
1452 /* Stub support (drm_stub.h) */
1453extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1454 struct drm_file *file_priv);
1455extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1456 struct drm_file *file_priv);
1457struct drm_master *drm_master_create(struct drm_minor *minor);
1458extern struct drm_master *drm_master_get(struct drm_master *master);
1459extern void drm_master_put(struct drm_master **master);
1460
1461extern void drm_put_dev(struct drm_device *dev);
1462extern int drm_put_minor(struct drm_minor **minor);
1463extern unsigned int drm_debug;
1464
1465extern unsigned int drm_vblank_offdelay;
1466extern unsigned int drm_timestamp_precision;
1467
1468extern struct class *drm_class;
1469extern struct proc_dir_entry *drm_proc_root;
1470extern struct dentry *drm_debugfs_root;
1471
1472extern struct idr drm_minors_idr;
1473
1474extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1475
1476 /* Proc support (drm_proc.h) */
1477extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1478 struct proc_dir_entry *root);
1479extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1480
1481 /* Debugfs support */
1482#if defined(CONFIG_DEBUG_FS)
1483extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1484 struct dentry *root);
1485extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1486 struct dentry *root, struct drm_minor *minor);
1487extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1488 struct drm_minor *minor);
1489extern int drm_debugfs_cleanup(struct drm_minor *minor);
1490#endif
1491
1492 /* Info file support */
1493extern int drm_name_info(struct seq_file *m, void *data);
1494extern int drm_vm_info(struct seq_file *m, void *data);
1495extern int drm_queues_info(struct seq_file *m, void *data);
1496extern int drm_bufs_info(struct seq_file *m, void *data);
1497extern int drm_vblank_info(struct seq_file *m, void *data);
1498extern int drm_clients_info(struct seq_file *m, void* data);
1499extern int drm_gem_name_info(struct seq_file *m, void *data);
1500
1501#if DRM_DEBUG_CODE
1502extern int drm_vma_info(struct seq_file *m, void *data);
1503#endif
1504
1505 /* Scatter Gather Support (drm_scatter.h) */
1506extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1507extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1508 struct drm_file *file_priv);
1509extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1510extern int drm_sg_free(struct drm_device *dev, void *data,
1511 struct drm_file *file_priv);
1512
1513 /* ATI PCIGART support (ati_pcigart.h) */
1514extern int drm_ati_pcigart_init(struct drm_device *dev,
1515 struct drm_ati_pcigart_info * gart_info);
1516extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1517 struct drm_ati_pcigart_info * gart_info);
1518
1519extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1520 size_t align);
1521extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1522extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1523
1524 /* sysfs support (drm_sysfs.c) */
1525struct drm_sysfs_class;
1526extern struct class *drm_sysfs_create(struct module *owner, char *name);
1527extern void drm_sysfs_destroy(void);
1528extern int drm_sysfs_device_add(struct drm_minor *minor);
1529extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1530extern void drm_sysfs_device_remove(struct drm_minor *minor);
1531extern char *drm_get_connector_status_name(enum drm_connector_status status);
1532extern int drm_sysfs_connector_add(struct drm_connector *connector);
1533extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1534
1535/* Graphics Execution Manager library functions (drm_gem.c) */
1536int drm_gem_init(struct drm_device *dev);
1537void drm_gem_destroy(struct drm_device *dev);
1538void drm_gem_object_release(struct drm_gem_object *obj);
1539void drm_gem_object_free(struct kref *kref);
1540struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1541 size_t size);
1542int drm_gem_object_init(struct drm_device *dev,
1543 struct drm_gem_object *obj, size_t size);
1544int drm_gem_private_object_init(struct drm_device *dev,
1545 struct drm_gem_object *obj, size_t size);
1546void drm_gem_object_handle_free(struct drm_gem_object *obj);
1547void drm_gem_vm_open(struct vm_area_struct *vma);
1548void drm_gem_vm_close(struct vm_area_struct *vma);
1549int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1550
1551#include "drm_global.h"
1552
1553static inline void
1554drm_gem_object_reference(struct drm_gem_object *obj)
1555{
1556 kref_get(&obj->refcount);
1557}
1558
1559static inline void
1560drm_gem_object_unreference(struct drm_gem_object *obj)
1561{
1562 if (obj != NULL)
1563 kref_put(&obj->refcount, drm_gem_object_free);
1564}
1565
1566static inline void
1567drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1568{
1569 if (obj != NULL) {
1570 struct drm_device *dev = obj->dev;
1571 mutex_lock(&dev->struct_mutex);
1572 kref_put(&obj->refcount, drm_gem_object_free);
1573 mutex_unlock(&dev->struct_mutex);
1574 }
1575}
1576
1577int drm_gem_handle_create(struct drm_file *file_priv,
1578 struct drm_gem_object *obj,
1579 u32 *handlep);
1580int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
1581
1582static inline void
1583drm_gem_object_handle_reference(struct drm_gem_object *obj)
1584{
1585 drm_gem_object_reference(obj);
1586 atomic_inc(&obj->handle_count);
1587}
1588
1589static inline void
1590drm_gem_object_handle_unreference(struct drm_gem_object *obj)
1591{
1592 if (obj == NULL)
1593 return;
1594
1595 if (atomic_read(&obj->handle_count) == 0)
1596 return;
1597 /*
1598 * Must bump handle count first as this may be the last
1599 * ref, in which case the object would disappear before we
1600 * checked for a name
1601 */
1602 if (atomic_dec_and_test(&obj->handle_count))
1603 drm_gem_object_handle_free(obj);
1604 drm_gem_object_unreference(obj);
1605}
1606
1607static inline void
1608drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj)
1609{
1610 if (obj == NULL)
1611 return;
1612
1613 if (atomic_read(&obj->handle_count) == 0)
1614 return;
1615
1616 /*
1617 * Must bump handle count first as this may be the last
1618 * ref, in which case the object would disappear before we
1619 * checked for a name
1620 */
1621
1622 if (atomic_dec_and_test(&obj->handle_count))
1623 drm_gem_object_handle_free(obj);
1624 drm_gem_object_unreference_unlocked(obj);
1625}
1626
1627struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1628 struct drm_file *filp,
1629 u32 handle);
1630int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1631 struct drm_file *file_priv);
1632int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1633 struct drm_file *file_priv);
1634int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1635 struct drm_file *file_priv);
1636void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1637void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1638
1639extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1640extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1641extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1642
1643static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1644 unsigned int token)
1645{
1646 struct drm_map_list *_entry;
1647 list_for_each_entry(_entry, &dev->maplist, head)
1648 if (_entry->user_token == token)
1649 return _entry->map;
1650 return NULL;
1651}
1652
1653static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1654{
1655}
1656
1657#include "drm_mem_util.h"
1658
1659extern int drm_fill_in_dev(struct drm_device *dev,
1660 const struct pci_device_id *ent,
1661 struct drm_driver *driver);
1662int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
1663/*@}*/
1664
1665/* PCI section */
1666static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1667{
1668 if (dev->driver->device_is_agp != NULL) {
1669 int err = (*dev->driver->device_is_agp) (dev);
1670
1671 if (err != 2) {
1672 return err;
1673 }
1674 }
1675
1676 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1677}
1678
1679extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1680extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1681extern int drm_get_pci_dev(struct pci_dev *pdev,
1682 const struct pci_device_id *ent,
1683 struct drm_driver *driver);
1684
1685
1686/* platform section */
1687extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1688extern void drm_platform_exit(struct drm_driver *driver, struct platform_device *platform_device);
1689
1690extern int drm_get_platform_dev(struct platform_device *pdev,
1691 struct drm_driver *driver);
1692
1693#endif /* __KERNEL__ */
1694#endif
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 <asm/pgalloc.h>
71#include <drm/drm.h>
72#include <drm/drm_sarea.h>
73#include <drm/drm_vma_manager.h>
74
75#include <linux/idr.h>
76
77#define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
78
79struct module;
80
81struct drm_file;
82struct drm_device;
83
84struct device_node;
85struct videomode;
86
87#include <drm/drm_os_linux.h>
88#include <drm/drm_hashtab.h>
89#include <drm/drm_mm.h>
90
91/*
92 * 4 debug categories are defined:
93 *
94 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...
95 * This is the category used by the DRM_DEBUG() macro.
96 *
97 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...
98 * This is the category used by the DRM_DEBUG_DRIVER() macro.
99 *
100 * KMS: used in the modesetting code.
101 * This is the category used by the DRM_DEBUG_KMS() macro.
102 *
103 * PRIME: used in the prime code.
104 * This is the category used by the DRM_DEBUG_PRIME() macro.
105 *
106 * Enabling verbose debug messages is done through the drm.debug parameter,
107 * each category being enabled by a bit.
108 *
109 * drm.debug=0x1 will enable CORE messages
110 * drm.debug=0x2 will enable DRIVER messages
111 * drm.debug=0x3 will enable CORE and DRIVER messages
112 * ...
113 * drm.debug=0xf will enable all messages
114 *
115 * An interesting feature is that it's possible to enable verbose logging at
116 * run-time by echoing the debug value in its sysfs node:
117 * # echo 0xf > /sys/module/drm/parameters/debug
118 */
119#define DRM_UT_CORE 0x01
120#define DRM_UT_DRIVER 0x02
121#define DRM_UT_KMS 0x04
122#define DRM_UT_PRIME 0x08
123
124extern __printf(2, 3)
125void drm_ut_debug_printk(const char *function_name,
126 const char *format, ...);
127extern __printf(2, 3)
128int drm_err(const char *func, const char *format, ...);
129
130/***********************************************************************/
131/** \name DRM template customization defaults */
132/*@{*/
133
134/* driver capabilities and requirements mask */
135#define DRIVER_USE_AGP 0x1
136#define DRIVER_PCI_DMA 0x8
137#define DRIVER_SG 0x10
138#define DRIVER_HAVE_DMA 0x20
139#define DRIVER_HAVE_IRQ 0x40
140#define DRIVER_IRQ_SHARED 0x80
141#define DRIVER_GEM 0x1000
142#define DRIVER_MODESET 0x2000
143#define DRIVER_PRIME 0x4000
144#define DRIVER_RENDER 0x8000
145
146#define DRIVER_BUS_PCI 0x1
147#define DRIVER_BUS_PLATFORM 0x2
148#define DRIVER_BUS_USB 0x3
149#define DRIVER_BUS_HOST1X 0x4
150
151/***********************************************************************/
152/** \name Begin the DRM... */
153/*@{*/
154
155#define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
156 also include looping detection. */
157
158#define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
159#define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
160#define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
161
162#define DRM_MAP_HASH_OFFSET 0x10000000
163
164/*@}*/
165
166/***********************************************************************/
167/** \name Macros to make printk easier */
168/*@{*/
169
170/**
171 * Error output.
172 *
173 * \param fmt printf() like format string.
174 * \param arg arguments
175 */
176#define DRM_ERROR(fmt, ...) \
177 drm_err(__func__, fmt, ##__VA_ARGS__)
178
179/**
180 * Rate limited error output. Like DRM_ERROR() but won't flood the log.
181 *
182 * \param fmt printf() like format string.
183 * \param arg arguments
184 */
185#define DRM_ERROR_RATELIMITED(fmt, ...) \
186({ \
187 static DEFINE_RATELIMIT_STATE(_rs, \
188 DEFAULT_RATELIMIT_INTERVAL, \
189 DEFAULT_RATELIMIT_BURST); \
190 \
191 if (__ratelimit(&_rs)) \
192 drm_err(__func__, fmt, ##__VA_ARGS__); \
193})
194
195#define DRM_INFO(fmt, ...) \
196 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
197
198#define DRM_INFO_ONCE(fmt, ...) \
199 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
200
201/**
202 * Debug output.
203 *
204 * \param fmt printf() like format string.
205 * \param arg arguments
206 */
207#if DRM_DEBUG_CODE
208#define DRM_DEBUG(fmt, args...) \
209 do { \
210 if (unlikely(drm_debug & DRM_UT_CORE)) \
211 drm_ut_debug_printk(__func__, fmt, ##args); \
212 } while (0)
213
214#define DRM_DEBUG_DRIVER(fmt, args...) \
215 do { \
216 if (unlikely(drm_debug & DRM_UT_DRIVER)) \
217 drm_ut_debug_printk(__func__, fmt, ##args); \
218 } while (0)
219#define DRM_DEBUG_KMS(fmt, args...) \
220 do { \
221 if (unlikely(drm_debug & DRM_UT_KMS)) \
222 drm_ut_debug_printk(__func__, fmt, ##args); \
223 } while (0)
224#define DRM_DEBUG_PRIME(fmt, args...) \
225 do { \
226 if (unlikely(drm_debug & DRM_UT_PRIME)) \
227 drm_ut_debug_printk(__func__, fmt, ##args); \
228 } while (0)
229#else
230#define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
231#define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
232#define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
233#define DRM_DEBUG(fmt, arg...) do { } while (0)
234#endif
235
236/*@}*/
237
238/***********************************************************************/
239/** \name Internal types and structures */
240/*@{*/
241
242#define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
243
244#define DRM_IF_VERSION(maj, min) (maj << 16 | min)
245
246/**
247 * Test that the hardware lock is held by the caller, returning otherwise.
248 *
249 * \param dev DRM device.
250 * \param filp file pointer of the caller.
251 */
252#define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
253do { \
254 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
255 _file_priv->master->lock.file_priv != _file_priv) { \
256 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
257 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
258 _file_priv->master->lock.file_priv, _file_priv); \
259 return -EINVAL; \
260 } \
261} while (0)
262
263/**
264 * Ioctl function type.
265 *
266 * \param inode device inode.
267 * \param file_priv DRM file private pointer.
268 * \param cmd command.
269 * \param arg argument.
270 */
271typedef int drm_ioctl_t(struct drm_device *dev, void *data,
272 struct drm_file *file_priv);
273
274typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
275 unsigned long arg);
276
277#define DRM_IOCTL_NR(n) _IOC_NR(n)
278#define DRM_MAJOR 226
279
280#define DRM_AUTH 0x1
281#define DRM_MASTER 0x2
282#define DRM_ROOT_ONLY 0x4
283#define DRM_CONTROL_ALLOW 0x8
284#define DRM_UNLOCKED 0x10
285#define DRM_RENDER_ALLOW 0x20
286
287struct drm_ioctl_desc {
288 unsigned int cmd;
289 int flags;
290 drm_ioctl_t *func;
291 unsigned int cmd_drv;
292 const char *name;
293};
294
295/**
296 * Creates a driver or general drm_ioctl_desc array entry for the given
297 * ioctl, for use by drm_ioctl().
298 */
299
300#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
301 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
302
303struct drm_magic_entry {
304 struct list_head head;
305 struct drm_hash_item hash_item;
306 struct drm_file *priv;
307};
308
309struct drm_vma_entry {
310 struct list_head head;
311 struct vm_area_struct *vma;
312 pid_t pid;
313};
314
315/**
316 * DMA buffer.
317 */
318struct drm_buf {
319 int idx; /**< Index into master buflist */
320 int total; /**< Buffer size */
321 int order; /**< log-base-2(total) */
322 int used; /**< Amount of buffer in use (for DMA) */
323 unsigned long offset; /**< Byte offset (used internally) */
324 void *address; /**< Address of buffer */
325 unsigned long bus_address; /**< Bus address of buffer */
326 struct drm_buf *next; /**< Kernel-only: used for free list */
327 __volatile__ int waiting; /**< On kernel DMA queue */
328 __volatile__ int pending; /**< On hardware DMA queue */
329 struct drm_file *file_priv; /**< Private of holding file descr */
330 int context; /**< Kernel queue for this buffer */
331 int while_locked; /**< Dispatch this buffer while locked */
332 enum {
333 DRM_LIST_NONE = 0,
334 DRM_LIST_FREE = 1,
335 DRM_LIST_WAIT = 2,
336 DRM_LIST_PEND = 3,
337 DRM_LIST_PRIO = 4,
338 DRM_LIST_RECLAIM = 5
339 } list; /**< Which list we're on */
340
341 int dev_priv_size; /**< Size of buffer private storage */
342 void *dev_private; /**< Per-buffer private storage */
343};
344
345/** bufs is one longer than it has to be */
346struct drm_waitlist {
347 int count; /**< Number of possible buffers */
348 struct drm_buf **bufs; /**< List of pointers to buffers */
349 struct drm_buf **rp; /**< Read pointer */
350 struct drm_buf **wp; /**< Write pointer */
351 struct drm_buf **end; /**< End pointer */
352 spinlock_t read_lock;
353 spinlock_t write_lock;
354};
355
356struct drm_freelist {
357 int initialized; /**< Freelist in use */
358 atomic_t count; /**< Number of free buffers */
359 struct drm_buf *next; /**< End pointer */
360
361 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
362 int low_mark; /**< Low water mark */
363 int high_mark; /**< High water mark */
364 atomic_t wfh; /**< If waiting for high mark */
365 spinlock_t lock;
366};
367
368typedef struct drm_dma_handle {
369 dma_addr_t busaddr;
370 void *vaddr;
371 size_t size;
372} drm_dma_handle_t;
373
374/**
375 * Buffer entry. There is one of this for each buffer size order.
376 */
377struct drm_buf_entry {
378 int buf_size; /**< size */
379 int buf_count; /**< number of buffers */
380 struct drm_buf *buflist; /**< buffer list */
381 int seg_count;
382 int page_order;
383 struct drm_dma_handle **seglist;
384
385 struct drm_freelist freelist;
386};
387
388/* Event queued up for userspace to read */
389struct drm_pending_event {
390 struct drm_event *event;
391 struct list_head link;
392 struct drm_file *file_priv;
393 pid_t pid; /* pid of requester, no guarantee it's valid by the time
394 we deliver the event, for tracing only */
395 void (*destroy)(struct drm_pending_event *event);
396};
397
398/* initial implementaton using a linked list - todo hashtab */
399struct drm_prime_file_private {
400 struct list_head head;
401 struct mutex lock;
402};
403
404/** File private data */
405struct drm_file {
406 unsigned always_authenticated :1;
407 unsigned authenticated :1;
408 /* Whether we're master for a minor. Protected by master_mutex */
409 unsigned is_master :1;
410 /* true when the client has asked us to expose stereo 3D mode flags */
411 unsigned stereo_allowed :1;
412 /*
413 * true if client understands CRTC primary planes and cursor planes
414 * in the plane list
415 */
416 unsigned universal_planes:1;
417
418 struct pid *pid;
419 kuid_t uid;
420 drm_magic_t magic;
421 struct list_head lhead;
422 struct drm_minor *minor;
423 unsigned long lock_count;
424
425 /** Mapping of mm object handles to object pointers. */
426 struct idr object_idr;
427 /** Lock for synchronization of access to object_idr. */
428 spinlock_t table_lock;
429
430 struct file *filp;
431 void *driver_priv;
432
433 struct drm_master *master; /* master this node is currently associated with
434 N.B. not always minor->master */
435 /**
436 * fbs - List of framebuffers associated with this file.
437 *
438 * Protected by fbs_lock. Note that the fbs list holds a reference on
439 * the fb object to prevent it from untimely disappearing.
440 */
441 struct list_head fbs;
442 struct mutex fbs_lock;
443
444 wait_queue_head_t event_wait;
445 struct list_head event_list;
446 int event_space;
447
448 struct drm_prime_file_private prime;
449};
450
451/** Wait queue */
452struct drm_queue {
453 atomic_t use_count; /**< Outstanding uses (+1) */
454 atomic_t finalization; /**< Finalization in progress */
455 atomic_t block_count; /**< Count of processes waiting */
456 atomic_t block_read; /**< Queue blocked for reads */
457 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
458 atomic_t block_write; /**< Queue blocked for writes */
459 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
460 atomic_t total_queued; /**< Total queued statistic */
461 atomic_t total_flushed; /**< Total flushes statistic */
462 atomic_t total_locks; /**< Total locks statistics */
463 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
464 struct drm_waitlist waitlist; /**< Pending buffers */
465 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
466};
467
468/**
469 * Lock data.
470 */
471struct drm_lock_data {
472 struct drm_hw_lock *hw_lock; /**< Hardware lock */
473 /** Private of lock holder's file (NULL=kernel) */
474 struct drm_file *file_priv;
475 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
476 unsigned long lock_time; /**< Time of last lock in jiffies */
477 spinlock_t spinlock;
478 uint32_t kernel_waiters;
479 uint32_t user_waiters;
480 int idle_has_lock;
481};
482
483/**
484 * DMA data.
485 */
486struct drm_device_dma {
487
488 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
489 int buf_count; /**< total number of buffers */
490 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
491 int seg_count;
492 int page_count; /**< number of pages */
493 unsigned long *pagelist; /**< page list */
494 unsigned long byte_count;
495 enum {
496 _DRM_DMA_USE_AGP = 0x01,
497 _DRM_DMA_USE_SG = 0x02,
498 _DRM_DMA_USE_FB = 0x04,
499 _DRM_DMA_USE_PCI_RO = 0x08
500 } flags;
501
502};
503
504/**
505 * AGP memory entry. Stored as a doubly linked list.
506 */
507struct drm_agp_mem {
508 unsigned long handle; /**< handle */
509 struct agp_memory *memory;
510 unsigned long bound; /**< address */
511 int pages;
512 struct list_head head;
513};
514
515/**
516 * AGP data.
517 *
518 * \sa drm_agp_init() and drm_device::agp.
519 */
520struct drm_agp_head {
521 struct agp_kern_info agp_info; /**< AGP device information */
522 struct list_head memory;
523 unsigned long mode; /**< AGP mode */
524 struct agp_bridge_data *bridge;
525 int enabled; /**< whether the AGP bus as been enabled */
526 int acquired; /**< whether the AGP device has been acquired */
527 unsigned long base;
528 int agp_mtrr;
529 int cant_use_aperture;
530 unsigned long page_mask;
531};
532
533/**
534 * Scatter-gather memory.
535 */
536struct drm_sg_mem {
537 unsigned long handle;
538 void *virtual;
539 int pages;
540 struct page **pagelist;
541 dma_addr_t *busaddr;
542};
543
544struct drm_sigdata {
545 int context;
546 struct drm_hw_lock *lock;
547};
548
549
550/**
551 * Kernel side of a mapping
552 */
553struct drm_local_map {
554 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
555 unsigned long size; /**< Requested physical size (bytes) */
556 enum drm_map_type type; /**< Type of memory to map */
557 enum drm_map_flags flags; /**< Flags */
558 void *handle; /**< User-space: "Handle" to pass to mmap() */
559 /**< Kernel-space: kernel-virtual address */
560 int mtrr; /**< MTRR slot used */
561};
562
563typedef struct drm_local_map drm_local_map_t;
564
565/**
566 * Mappings list
567 */
568struct drm_map_list {
569 struct list_head head; /**< list head */
570 struct drm_hash_item hash;
571 struct drm_local_map *map; /**< mapping */
572 uint64_t user_token;
573 struct drm_master *master;
574};
575
576/**
577 * Context handle list
578 */
579struct drm_ctx_list {
580 struct list_head head; /**< list head */
581 drm_context_t handle; /**< context handle */
582 struct drm_file *tag; /**< associated fd private data */
583};
584
585/* location of GART table */
586#define DRM_ATI_GART_MAIN 1
587#define DRM_ATI_GART_FB 2
588
589#define DRM_ATI_GART_PCI 1
590#define DRM_ATI_GART_PCIE 2
591#define DRM_ATI_GART_IGP 3
592
593struct drm_ati_pcigart_info {
594 int gart_table_location;
595 int gart_reg_if;
596 void *addr;
597 dma_addr_t bus_addr;
598 dma_addr_t table_mask;
599 struct drm_dma_handle *table_handle;
600 struct drm_local_map mapping;
601 int table_size;
602};
603
604/**
605 * This structure defines the drm_mm memory object, which will be used by the
606 * DRM for its buffer objects.
607 */
608struct drm_gem_object {
609 /** Reference count of this object */
610 struct kref refcount;
611
612 /**
613 * handle_count - gem file_priv handle count of this object
614 *
615 * Each handle also holds a reference. Note that when the handle_count
616 * drops to 0 any global names (e.g. the id in the flink namespace) will
617 * be cleared.
618 *
619 * Protected by dev->object_name_lock.
620 * */
621 unsigned handle_count;
622
623 /** Related drm device */
624 struct drm_device *dev;
625
626 /** File representing the shmem storage */
627 struct file *filp;
628
629 /* Mapping info for this object */
630 struct drm_vma_offset_node vma_node;
631
632 /**
633 * Size of the object, in bytes. Immutable over the object's
634 * lifetime.
635 */
636 size_t size;
637
638 /**
639 * Global name for this object, starts at 1. 0 means unnamed.
640 * Access is covered by the object_name_lock in the related drm_device
641 */
642 int name;
643
644 /**
645 * Memory domains. These monitor which caches contain read/write data
646 * related to the object. When transitioning from one set of domains
647 * to another, the driver is called to ensure that caches are suitably
648 * flushed and invalidated
649 */
650 uint32_t read_domains;
651 uint32_t write_domain;
652
653 /**
654 * While validating an exec operation, the
655 * new read/write domain values are computed here.
656 * They will be transferred to the above values
657 * at the point that any cache flushing occurs
658 */
659 uint32_t pending_read_domains;
660 uint32_t pending_write_domain;
661
662 /**
663 * dma_buf - dma buf associated with this GEM object
664 *
665 * Pointer to the dma-buf associated with this gem object (either
666 * through importing or exporting). We break the resulting reference
667 * loop when the last gem handle for this object is released.
668 *
669 * Protected by obj->object_name_lock
670 */
671 struct dma_buf *dma_buf;
672
673 /**
674 * import_attach - dma buf attachment backing this object
675 *
676 * Any foreign dma_buf imported as a gem object has this set to the
677 * attachment point for the device. This is invariant over the lifetime
678 * of a gem object.
679 *
680 * The driver's ->gem_free_object callback is responsible for cleaning
681 * up the dma_buf attachment and references acquired at import time.
682 *
683 * Note that the drm gem/prime core does not depend upon drivers setting
684 * this field any more. So for drivers where this doesn't make sense
685 * (e.g. virtual devices or a displaylink behind an usb bus) they can
686 * simply leave it as NULL.
687 */
688 struct dma_buf_attachment *import_attach;
689};
690
691#include <drm/drm_crtc.h>
692
693/**
694 * struct drm_master - drm master structure
695 *
696 * @refcount: Refcount for this master object.
697 * @minor: Link back to minor char device we are master for. Immutable.
698 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
699 * @unique_len: Length of unique field. Protected by drm_global_mutex.
700 * @unique_size: Amount allocated. Protected by drm_global_mutex.
701 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex.
702 * @magicfree: List of used authentication tokens. Protected by struct_mutex.
703 * @lock: DRI lock information.
704 * @driver_priv: Pointer to driver-private information.
705 */
706struct drm_master {
707 struct kref refcount;
708 struct drm_minor *minor;
709 char *unique;
710 int unique_len;
711 int unique_size;
712 struct drm_open_hash magiclist;
713 struct list_head magicfree;
714 struct drm_lock_data lock;
715 void *driver_priv;
716};
717
718/* Size of ringbuffer for vblank timestamps. Just double-buffer
719 * in initial implementation.
720 */
721#define DRM_VBLANKTIME_RBSIZE 2
722
723/* Flags and return codes for get_vblank_timestamp() driver function. */
724#define DRM_CALLED_FROM_VBLIRQ 1
725#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
726#define DRM_VBLANKTIME_INVBL (1 << 1)
727
728/* get_scanout_position() return flags */
729#define DRM_SCANOUTPOS_VALID (1 << 0)
730#define DRM_SCANOUTPOS_INVBL (1 << 1)
731#define DRM_SCANOUTPOS_ACCURATE (1 << 2)
732
733struct drm_bus {
734 int bus_type;
735 int (*get_irq)(struct drm_device *dev);
736 const char *(*get_name)(struct drm_device *dev);
737 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
738 int (*set_unique)(struct drm_device *dev, struct drm_master *master,
739 struct drm_unique *unique);
740 int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
741};
742
743/**
744 * DRM driver structure. This structure represent the common code for
745 * a family of cards. There will one drm_device for each card present
746 * in this family
747 */
748struct drm_driver {
749 int (*load) (struct drm_device *, unsigned long flags);
750 int (*firstopen) (struct drm_device *);
751 int (*open) (struct drm_device *, struct drm_file *);
752 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
753 void (*postclose) (struct drm_device *, struct drm_file *);
754 void (*lastclose) (struct drm_device *);
755 int (*unload) (struct drm_device *);
756 int (*suspend) (struct drm_device *, pm_message_t state);
757 int (*resume) (struct drm_device *);
758 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
759 int (*dma_quiescent) (struct drm_device *);
760 int (*context_dtor) (struct drm_device *dev, int context);
761
762 /**
763 * get_vblank_counter - get raw hardware vblank counter
764 * @dev: DRM device
765 * @crtc: counter to fetch
766 *
767 * Driver callback for fetching a raw hardware vblank counter for @crtc.
768 * If a device doesn't have a hardware counter, the driver can simply
769 * return the value of drm_vblank_count. The DRM core will account for
770 * missed vblank events while interrupts where disabled based on system
771 * timestamps.
772 *
773 * Wraparound handling and loss of events due to modesetting is dealt
774 * with in the DRM core code.
775 *
776 * RETURNS
777 * Raw vblank counter value.
778 */
779 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
780
781 /**
782 * enable_vblank - enable vblank interrupt events
783 * @dev: DRM device
784 * @crtc: which irq to enable
785 *
786 * Enable vblank interrupts for @crtc. If the device doesn't have
787 * a hardware vblank counter, this routine should be a no-op, since
788 * interrupts will have to stay on to keep the count accurate.
789 *
790 * RETURNS
791 * Zero on success, appropriate errno if the given @crtc's vblank
792 * interrupt cannot be enabled.
793 */
794 int (*enable_vblank) (struct drm_device *dev, int crtc);
795
796 /**
797 * disable_vblank - disable vblank interrupt events
798 * @dev: DRM device
799 * @crtc: which irq to enable
800 *
801 * Disable vblank interrupts for @crtc. If the device doesn't have
802 * a hardware vblank counter, this routine should be a no-op, since
803 * interrupts will have to stay on to keep the count accurate.
804 */
805 void (*disable_vblank) (struct drm_device *dev, int crtc);
806
807 /**
808 * Called by \c drm_device_is_agp. Typically used to determine if a
809 * card is really attached to AGP or not.
810 *
811 * \param dev DRM device handle
812 *
813 * \returns
814 * One of three values is returned depending on whether or not the
815 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
816 * (return of 1), or may or may not be AGP (return of 2).
817 */
818 int (*device_is_agp) (struct drm_device *dev);
819
820 /**
821 * Called by vblank timestamping code.
822 *
823 * Return the current display scanout position from a crtc, and an
824 * optional accurate ktime_get timestamp of when position was measured.
825 *
826 * \param dev DRM device.
827 * \param crtc Id of the crtc to query.
828 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
829 * \param *vpos Target location for current vertical scanout position.
830 * \param *hpos Target location for current horizontal scanout position.
831 * \param *stime Target location for timestamp taken immediately before
832 * scanout position query. Can be NULL to skip timestamp.
833 * \param *etime Target location for timestamp taken immediately after
834 * scanout position query. Can be NULL to skip timestamp.
835 *
836 * Returns vpos as a positive number while in active scanout area.
837 * Returns vpos as a negative number inside vblank, counting the number
838 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
839 * until start of active scanout / end of vblank."
840 *
841 * \return Flags, or'ed together as follows:
842 *
843 * DRM_SCANOUTPOS_VALID = Query successful.
844 * DRM_SCANOUTPOS_INVBL = Inside vblank.
845 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
846 * this flag means that returned position may be offset by a constant
847 * but unknown small number of scanlines wrt. real scanout position.
848 *
849 */
850 int (*get_scanout_position) (struct drm_device *dev, int crtc,
851 unsigned int flags,
852 int *vpos, int *hpos, ktime_t *stime,
853 ktime_t *etime);
854
855 /**
856 * Called by \c drm_get_last_vbltimestamp. Should return a precise
857 * timestamp when the most recent VBLANK interval ended or will end.
858 *
859 * Specifically, the timestamp in @vblank_time should correspond as
860 * closely as possible to the time when the first video scanline of
861 * the video frame after the end of VBLANK will start scanning out,
862 * the time immediately after end of the VBLANK interval. If the
863 * @crtc is currently inside VBLANK, this will be a time in the future.
864 * If the @crtc is currently scanning out a frame, this will be the
865 * past start time of the current scanout. This is meant to adhere
866 * to the OpenML OML_sync_control extension specification.
867 *
868 * \param dev dev DRM device handle.
869 * \param crtc crtc for which timestamp should be returned.
870 * \param *max_error Maximum allowable timestamp error in nanoseconds.
871 * Implementation should strive to provide timestamp
872 * with an error of at most *max_error nanoseconds.
873 * Returns true upper bound on error for timestamp.
874 * \param *vblank_time Target location for returned vblank timestamp.
875 * \param flags 0 = Defaults, no special treatment needed.
876 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
877 * irq handler. Some drivers need to apply some workarounds
878 * for gpu-specific vblank irq quirks if flag is set.
879 *
880 * \returns
881 * Zero if timestamping isn't supported in current display mode or a
882 * negative number on failure. A positive status code on success,
883 * which describes how the vblank_time timestamp was computed.
884 */
885 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
886 int *max_error,
887 struct timeval *vblank_time,
888 unsigned flags);
889
890 /* these have to be filled in */
891
892 irqreturn_t(*irq_handler) (int irq, void *arg);
893 void (*irq_preinstall) (struct drm_device *dev);
894 int (*irq_postinstall) (struct drm_device *dev);
895 void (*irq_uninstall) (struct drm_device *dev);
896
897 /* Master routines */
898 int (*master_create)(struct drm_device *dev, struct drm_master *master);
899 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
900 /**
901 * master_set is called whenever the minor master is set.
902 * master_drop is called whenever the minor master is dropped.
903 */
904
905 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
906 bool from_open);
907 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
908 bool from_release);
909
910 int (*debugfs_init)(struct drm_minor *minor);
911 void (*debugfs_cleanup)(struct drm_minor *minor);
912
913 /**
914 * Driver-specific constructor for drm_gem_objects, to set up
915 * obj->driver_private.
916 *
917 * Returns 0 on success.
918 */
919 void (*gem_free_object) (struct drm_gem_object *obj);
920 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
921 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
922
923 /* prime: */
924 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
925 int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
926 uint32_t handle, uint32_t flags, int *prime_fd);
927 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
928 int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
929 int prime_fd, uint32_t *handle);
930 /* export GEM -> dmabuf */
931 struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
932 struct drm_gem_object *obj, int flags);
933 /* import dmabuf -> GEM */
934 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
935 struct dma_buf *dma_buf);
936 /* low-level interface used by drm_gem_prime_{import,export} */
937 int (*gem_prime_pin)(struct drm_gem_object *obj);
938 void (*gem_prime_unpin)(struct drm_gem_object *obj);
939 struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj);
940 struct drm_gem_object *(*gem_prime_import_sg_table)(
941 struct drm_device *dev, size_t size,
942 struct sg_table *sgt);
943 void *(*gem_prime_vmap)(struct drm_gem_object *obj);
944 void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr);
945 int (*gem_prime_mmap)(struct drm_gem_object *obj,
946 struct vm_area_struct *vma);
947
948 /* vga arb irq handler */
949 void (*vgaarb_irq)(struct drm_device *dev, bool state);
950
951 /* dumb alloc support */
952 int (*dumb_create)(struct drm_file *file_priv,
953 struct drm_device *dev,
954 struct drm_mode_create_dumb *args);
955 int (*dumb_map_offset)(struct drm_file *file_priv,
956 struct drm_device *dev, uint32_t handle,
957 uint64_t *offset);
958 int (*dumb_destroy)(struct drm_file *file_priv,
959 struct drm_device *dev,
960 uint32_t handle);
961
962 /* Driver private ops for this object */
963 const struct vm_operations_struct *gem_vm_ops;
964
965 int major;
966 int minor;
967 int patchlevel;
968 char *name;
969 char *desc;
970 char *date;
971
972 u32 driver_features;
973 int dev_priv_size;
974 const struct drm_ioctl_desc *ioctls;
975 int num_ioctls;
976 const struct file_operations *fops;
977 union {
978 struct pci_driver *pci;
979 struct platform_device *platform_device;
980 struct usb_driver *usb;
981 } kdriver;
982 struct drm_bus *bus;
983
984 /* List of devices hanging off this driver with stealth attach. */
985 struct list_head legacy_dev_list;
986};
987
988enum drm_minor_type {
989 DRM_MINOR_LEGACY,
990 DRM_MINOR_CONTROL,
991 DRM_MINOR_RENDER,
992 DRM_MINOR_CNT,
993};
994
995/**
996 * Info file list entry. This structure represents a debugfs or proc file to
997 * be created by the drm core
998 */
999struct drm_info_list {
1000 const char *name; /** file name */
1001 int (*show)(struct seq_file*, void*); /** show callback */
1002 u32 driver_features; /**< Required driver features for this entry */
1003 void *data;
1004};
1005
1006/**
1007 * debugfs node structure. This structure represents a debugfs file.
1008 */
1009struct drm_info_node {
1010 struct list_head list;
1011 struct drm_minor *minor;
1012 const struct drm_info_list *info_ent;
1013 struct dentry *dent;
1014};
1015
1016/**
1017 * DRM minor structure. This structure represents a drm minor number.
1018 */
1019struct drm_minor {
1020 int index; /**< Minor device number */
1021 int type; /**< Control or render */
1022 struct device *kdev; /**< Linux device */
1023 struct drm_device *dev;
1024
1025 struct dentry *debugfs_root;
1026
1027 struct list_head debugfs_list;
1028 struct mutex debugfs_lock; /* Protects debugfs_list. */
1029
1030 /* currently active master for this node. Protected by master_mutex */
1031 struct drm_master *master;
1032 struct drm_mode_group mode_group;
1033};
1034
1035
1036struct drm_pending_vblank_event {
1037 struct drm_pending_event base;
1038 int pipe;
1039 struct drm_event_vblank event;
1040};
1041
1042struct drm_vblank_crtc {
1043 wait_queue_head_t queue; /**< VBLANK wait queue */
1044 struct timeval time[DRM_VBLANKTIME_RBSIZE]; /**< timestamp of current count */
1045 atomic_t count; /**< number of VBLANK interrupts */
1046 atomic_t refcount; /* number of users of vblank interruptsper crtc */
1047 u32 last; /* protected by dev->vbl_lock, used */
1048 /* for wraparound handling */
1049 u32 last_wait; /* Last vblank seqno waited per CRTC */
1050 unsigned int inmodeset; /* Display driver is setting mode */
1051 bool enabled; /* so we don't call enable more than
1052 once per disable */
1053};
1054
1055/**
1056 * DRM device structure. This structure represent a complete card that
1057 * may contain multiple heads.
1058 */
1059struct drm_device {
1060 struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */
1061 char *devname; /**< For /proc/interrupts */
1062 int if_version; /**< Highest interface version set */
1063
1064 /** \name Lifetime Management */
1065 /*@{ */
1066 struct kref ref; /**< Object ref-count */
1067 struct device *dev; /**< Device structure of bus-device */
1068 struct drm_driver *driver; /**< DRM driver managing the device */
1069 void *dev_private; /**< DRM driver private data */
1070 struct drm_minor *control; /**< Control node */
1071 struct drm_minor *primary; /**< Primary node */
1072 struct drm_minor *render; /**< Render node */
1073 atomic_t unplugged; /**< Flag whether dev is dead */
1074 struct inode *anon_inode; /**< inode for private address-space */
1075 /*@} */
1076
1077 /** \name Locks */
1078 /*@{ */
1079 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1080 struct mutex struct_mutex; /**< For others */
1081 struct mutex master_mutex; /**< For drm_minor::master and drm_file::is_master */
1082 /*@} */
1083
1084 /** \name Usage Counters */
1085 /*@{ */
1086 int open_count; /**< Outstanding files open */
1087 int buf_use; /**< Buffers in use -- cannot alloc */
1088 atomic_t buf_alloc; /**< Buffer allocation in progress */
1089 /*@} */
1090
1091 struct list_head filelist;
1092
1093 /** \name Memory management */
1094 /*@{ */
1095 struct list_head maplist; /**< Linked list of regions */
1096 struct drm_open_hash map_hash; /**< User token hash table for maps */
1097
1098 /** \name Context handle management */
1099 /*@{ */
1100 struct list_head ctxlist; /**< Linked list of context handles */
1101 struct mutex ctxlist_mutex; /**< For ctxlist */
1102
1103 struct idr ctx_idr;
1104
1105 struct list_head vmalist; /**< List of vmas (for debugging) */
1106
1107 /*@} */
1108
1109 /** \name DMA support */
1110 /*@{ */
1111 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1112 /*@} */
1113
1114 /** \name Context support */
1115 /*@{ */
1116 bool irq_enabled; /**< True if irq handler is enabled */
1117 __volatile__ long context_flag; /**< Context swapping flag */
1118 int last_context; /**< Last current context */
1119 /*@} */
1120
1121 /** \name VBLANK IRQ support */
1122 /*@{ */
1123
1124 /*
1125 * At load time, disabling the vblank interrupt won't be allowed since
1126 * old clients may not call the modeset ioctl and therefore misbehave.
1127 * Once the modeset ioctl *has* been called though, we can safely
1128 * disable them when unused.
1129 */
1130 bool vblank_disable_allowed;
1131
1132 /* array of size num_crtcs */
1133 struct drm_vblank_crtc *vblank;
1134
1135 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1136 spinlock_t vbl_lock;
1137 struct timer_list vblank_disable_timer;
1138
1139 u32 max_vblank_count; /**< size of vblank counter register */
1140
1141 /**
1142 * List of events
1143 */
1144 struct list_head vblank_event_list;
1145 spinlock_t event_lock;
1146
1147 /*@} */
1148
1149 struct drm_agp_head *agp; /**< AGP data */
1150
1151 struct pci_dev *pdev; /**< PCI device structure */
1152#ifdef __alpha__
1153 struct pci_controller *hose;
1154#endif
1155
1156 struct platform_device *platformdev; /**< Platform device struture */
1157 struct usb_device *usbdev;
1158
1159 struct drm_sg_mem *sg; /**< Scatter gather memory */
1160 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1161 struct drm_sigdata sigdata; /**< For block_all_signals */
1162 sigset_t sigmask;
1163
1164 struct drm_local_map *agp_buffer_map;
1165 unsigned int agp_buffer_token;
1166
1167 struct drm_mode_config mode_config; /**< Current mode config */
1168
1169 /** \name GEM information */
1170 /*@{ */
1171 struct mutex object_name_lock;
1172 struct idr object_name_idr;
1173 struct drm_vma_offset_manager *vma_offset_manager;
1174 /*@} */
1175 int switch_power_state;
1176};
1177
1178#define DRM_SWITCH_POWER_ON 0
1179#define DRM_SWITCH_POWER_OFF 1
1180#define DRM_SWITCH_POWER_CHANGING 2
1181#define DRM_SWITCH_POWER_DYNAMIC_OFF 3
1182
1183static __inline__ int drm_core_check_feature(struct drm_device *dev,
1184 int feature)
1185{
1186 return ((dev->driver->driver_features & feature) ? 1 : 0);
1187}
1188
1189static inline int drm_dev_to_irq(struct drm_device *dev)
1190{
1191 return dev->driver->bus->get_irq(dev);
1192}
1193
1194static inline void drm_device_set_unplugged(struct drm_device *dev)
1195{
1196 smp_wmb();
1197 atomic_set(&dev->unplugged, 1);
1198}
1199
1200static inline int drm_device_is_unplugged(struct drm_device *dev)
1201{
1202 int ret = atomic_read(&dev->unplugged);
1203 smp_rmb();
1204 return ret;
1205}
1206
1207static inline bool drm_modeset_is_locked(struct drm_device *dev)
1208{
1209 return mutex_is_locked(&dev->mode_config.mutex);
1210}
1211
1212static inline bool drm_is_render_client(const struct drm_file *file_priv)
1213{
1214 return file_priv->minor->type == DRM_MINOR_RENDER;
1215}
1216
1217static inline bool drm_is_control_client(const struct drm_file *file_priv)
1218{
1219 return file_priv->minor->type == DRM_MINOR_CONTROL;
1220}
1221
1222static inline bool drm_is_primary_client(const struct drm_file *file_priv)
1223{
1224 return file_priv->minor->type == DRM_MINOR_LEGACY;
1225}
1226
1227/******************************************************************/
1228/** \name Internal function definitions */
1229/*@{*/
1230
1231 /* Driver support (drm_drv.h) */
1232extern long drm_ioctl(struct file *filp,
1233 unsigned int cmd, unsigned long arg);
1234extern long drm_compat_ioctl(struct file *filp,
1235 unsigned int cmd, unsigned long arg);
1236extern int drm_lastclose(struct drm_device *dev);
1237extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
1238
1239 /* Device support (drm_fops.h) */
1240extern struct mutex drm_global_mutex;
1241extern int drm_open(struct inode *inode, struct file *filp);
1242extern int drm_stub_open(struct inode *inode, struct file *filp);
1243extern ssize_t drm_read(struct file *filp, char __user *buffer,
1244 size_t count, loff_t *offset);
1245extern int drm_release(struct inode *inode, struct file *filp);
1246
1247 /* Mapping support (drm_vm.h) */
1248extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1249extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1250extern void drm_vm_open_locked(struct drm_device *dev, struct vm_area_struct *vma);
1251extern void drm_vm_close_locked(struct drm_device *dev, struct vm_area_struct *vma);
1252extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1253
1254 /* Memory management support (drm_memory.h) */
1255#include <drm/drm_memory.h>
1256
1257
1258 /* Misc. IOCTL support (drm_ioctl.h) */
1259extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1260 struct drm_file *file_priv);
1261extern int drm_getunique(struct drm_device *dev, void *data,
1262 struct drm_file *file_priv);
1263extern int drm_setunique(struct drm_device *dev, void *data,
1264 struct drm_file *file_priv);
1265extern int drm_getmap(struct drm_device *dev, void *data,
1266 struct drm_file *file_priv);
1267extern int drm_getclient(struct drm_device *dev, void *data,
1268 struct drm_file *file_priv);
1269extern int drm_getstats(struct drm_device *dev, void *data,
1270 struct drm_file *file_priv);
1271extern int drm_getcap(struct drm_device *dev, void *data,
1272 struct drm_file *file_priv);
1273extern int drm_setclientcap(struct drm_device *dev, void *data,
1274 struct drm_file *file_priv);
1275extern int drm_setversion(struct drm_device *dev, void *data,
1276 struct drm_file *file_priv);
1277extern int drm_noop(struct drm_device *dev, void *data,
1278 struct drm_file *file_priv);
1279
1280 /* Context IOCTL support (drm_context.h) */
1281extern int drm_resctx(struct drm_device *dev, void *data,
1282 struct drm_file *file_priv);
1283extern int drm_addctx(struct drm_device *dev, void *data,
1284 struct drm_file *file_priv);
1285extern int drm_getctx(struct drm_device *dev, void *data,
1286 struct drm_file *file_priv);
1287extern int drm_switchctx(struct drm_device *dev, void *data,
1288 struct drm_file *file_priv);
1289extern int drm_newctx(struct drm_device *dev, void *data,
1290 struct drm_file *file_priv);
1291extern int drm_rmctx(struct drm_device *dev, void *data,
1292 struct drm_file *file_priv);
1293
1294extern int drm_ctxbitmap_init(struct drm_device *dev);
1295extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1296extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1297
1298extern int drm_setsareactx(struct drm_device *dev, void *data,
1299 struct drm_file *file_priv);
1300extern int drm_getsareactx(struct drm_device *dev, void *data,
1301 struct drm_file *file_priv);
1302
1303 /* Authentication IOCTL support (drm_auth.h) */
1304extern int drm_getmagic(struct drm_device *dev, void *data,
1305 struct drm_file *file_priv);
1306extern int drm_authmagic(struct drm_device *dev, void *data,
1307 struct drm_file *file_priv);
1308extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic);
1309
1310/* Cache management (drm_cache.c) */
1311void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1312void drm_clflush_sg(struct sg_table *st);
1313void drm_clflush_virt_range(char *addr, unsigned long length);
1314
1315 /* Locking IOCTL support (drm_lock.h) */
1316extern int drm_lock(struct drm_device *dev, void *data,
1317 struct drm_file *file_priv);
1318extern int drm_unlock(struct drm_device *dev, void *data,
1319 struct drm_file *file_priv);
1320extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1321extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1322extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1323
1324/*
1325 * These are exported to drivers so that they can implement fencing using
1326 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1327 */
1328
1329extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1330
1331 /* Buffer management support (drm_bufs.h) */
1332extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1333extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1334extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1335 unsigned int size, enum drm_map_type type,
1336 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1337extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1338 struct drm_file *file_priv);
1339extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1340extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1341extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1342 struct drm_file *file_priv);
1343extern int drm_addbufs(struct drm_device *dev, void *data,
1344 struct drm_file *file_priv);
1345extern int drm_infobufs(struct drm_device *dev, void *data,
1346 struct drm_file *file_priv);
1347extern int drm_markbufs(struct drm_device *dev, void *data,
1348 struct drm_file *file_priv);
1349extern int drm_freebufs(struct drm_device *dev, void *data,
1350 struct drm_file *file_priv);
1351extern int drm_mapbufs(struct drm_device *dev, void *data,
1352 struct drm_file *file_priv);
1353extern int drm_dma_ioctl(struct drm_device *dev, void *data,
1354 struct drm_file *file_priv);
1355
1356 /* DMA support (drm_dma.h) */
1357extern int drm_legacy_dma_setup(struct drm_device *dev);
1358extern void drm_legacy_dma_takedown(struct drm_device *dev);
1359extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1360extern void drm_core_reclaim_buffers(struct drm_device *dev,
1361 struct drm_file *filp);
1362
1363 /* IRQ support (drm_irq.h) */
1364extern int drm_control(struct drm_device *dev, void *data,
1365 struct drm_file *file_priv);
1366extern int drm_irq_install(struct drm_device *dev);
1367extern int drm_irq_uninstall(struct drm_device *dev);
1368
1369extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1370extern int drm_wait_vblank(struct drm_device *dev, void *data,
1371 struct drm_file *filp);
1372extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1373extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1374 struct timeval *vblanktime);
1375extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
1376 struct drm_pending_vblank_event *e);
1377extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1378extern int drm_vblank_get(struct drm_device *dev, int crtc);
1379extern void drm_vblank_put(struct drm_device *dev, int crtc);
1380extern void drm_vblank_off(struct drm_device *dev, int crtc);
1381extern void drm_vblank_cleanup(struct drm_device *dev);
1382extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1383 struct timeval *tvblank, unsigned flags);
1384extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1385 int crtc, int *max_error,
1386 struct timeval *vblank_time,
1387 unsigned flags,
1388 const struct drm_crtc *refcrtc,
1389 const struct drm_display_mode *mode);
1390extern void drm_calc_timestamping_constants(struct drm_crtc *crtc,
1391 const struct drm_display_mode *mode);
1392
1393
1394/* Modesetting support */
1395extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1396extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1397extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1398 struct drm_file *file_priv);
1399
1400 /* AGP/GART support (drm_agpsupport.h) */
1401
1402#include <drm/drm_agpsupport.h>
1403
1404 /* Stub support (drm_stub.h) */
1405extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1406 struct drm_file *file_priv);
1407extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1408 struct drm_file *file_priv);
1409struct drm_master *drm_master_create(struct drm_minor *minor);
1410extern struct drm_master *drm_master_get(struct drm_master *master);
1411extern void drm_master_put(struct drm_master **master);
1412
1413extern void drm_put_dev(struct drm_device *dev);
1414extern void drm_unplug_dev(struct drm_device *dev);
1415extern unsigned int drm_debug;
1416extern unsigned int drm_rnodes;
1417extern unsigned int drm_universal_planes;
1418
1419extern unsigned int drm_vblank_offdelay;
1420extern unsigned int drm_timestamp_precision;
1421extern unsigned int drm_timestamp_monotonic;
1422
1423extern struct class *drm_class;
1424extern struct dentry *drm_debugfs_root;
1425
1426extern struct idr drm_minors_idr;
1427
1428extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1429
1430 /* Debugfs support */
1431#if defined(CONFIG_DEBUG_FS)
1432extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1433 struct dentry *root);
1434extern int drm_debugfs_create_files(const struct drm_info_list *files,
1435 int count, struct dentry *root,
1436 struct drm_minor *minor);
1437extern int drm_debugfs_remove_files(const struct drm_info_list *files,
1438 int count, struct drm_minor *minor);
1439extern int drm_debugfs_cleanup(struct drm_minor *minor);
1440#else
1441static inline int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1442 struct dentry *root)
1443{
1444 return 0;
1445}
1446
1447static inline int drm_debugfs_create_files(const struct drm_info_list *files,
1448 int count, struct dentry *root,
1449 struct drm_minor *minor)
1450{
1451 return 0;
1452}
1453
1454static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
1455 int count, struct drm_minor *minor)
1456{
1457 return 0;
1458}
1459
1460static inline int drm_debugfs_cleanup(struct drm_minor *minor)
1461{
1462 return 0;
1463}
1464#endif
1465
1466 /* Info file support */
1467extern int drm_name_info(struct seq_file *m, void *data);
1468extern int drm_vm_info(struct seq_file *m, void *data);
1469extern int drm_bufs_info(struct seq_file *m, void *data);
1470extern int drm_vblank_info(struct seq_file *m, void *data);
1471extern int drm_clients_info(struct seq_file *m, void* data);
1472extern int drm_gem_name_info(struct seq_file *m, void *data);
1473
1474
1475extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
1476 struct drm_gem_object *obj, int flags);
1477extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
1478 struct drm_file *file_priv, uint32_t handle, uint32_t flags,
1479 int *prime_fd);
1480extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
1481 struct dma_buf *dma_buf);
1482extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
1483 struct drm_file *file_priv, int prime_fd, uint32_t *handle);
1484extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
1485
1486extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
1487 struct drm_file *file_priv);
1488extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data,
1489 struct drm_file *file_priv);
1490
1491extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
1492 dma_addr_t *addrs, int max_pages);
1493extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages);
1494extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
1495
1496int drm_gem_dumb_destroy(struct drm_file *file,
1497 struct drm_device *dev,
1498 uint32_t handle);
1499
1500void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv);
1501void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv);
1502void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf);
1503
1504#if DRM_DEBUG_CODE
1505extern int drm_vma_info(struct seq_file *m, void *data);
1506#endif
1507
1508 /* Scatter Gather Support (drm_scatter.h) */
1509extern void drm_legacy_sg_cleanup(struct drm_device *dev);
1510extern int drm_sg_alloc(struct drm_device *dev, void *data,
1511 struct drm_file *file_priv);
1512extern int drm_sg_free(struct drm_device *dev, void *data,
1513 struct drm_file *file_priv);
1514
1515 /* ATI PCIGART support (ati_pcigart.h) */
1516extern int drm_ati_pcigart_init(struct drm_device *dev,
1517 struct drm_ati_pcigart_info * gart_info);
1518extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1519 struct drm_ati_pcigart_info * gart_info);
1520
1521extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1522 size_t align);
1523extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1524extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1525
1526 /* sysfs support (drm_sysfs.c) */
1527struct drm_sysfs_class;
1528extern struct class *drm_sysfs_create(struct module *owner, char *name);
1529extern void drm_sysfs_destroy(void);
1530extern int drm_sysfs_device_add(struct drm_minor *minor);
1531extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1532extern void drm_sysfs_device_remove(struct drm_minor *minor);
1533extern int drm_sysfs_connector_add(struct drm_connector *connector);
1534extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1535
1536/* Graphics Execution Manager library functions (drm_gem.c) */
1537int drm_gem_init(struct drm_device *dev);
1538void drm_gem_destroy(struct drm_device *dev);
1539void drm_gem_object_release(struct drm_gem_object *obj);
1540void drm_gem_object_free(struct kref *kref);
1541int drm_gem_object_init(struct drm_device *dev,
1542 struct drm_gem_object *obj, size_t size);
1543void drm_gem_private_object_init(struct drm_device *dev,
1544 struct drm_gem_object *obj, size_t size);
1545void drm_gem_vm_open(struct vm_area_struct *vma);
1546void drm_gem_vm_close(struct vm_area_struct *vma);
1547int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,
1548 struct vm_area_struct *vma);
1549int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1550
1551#include <drm/drm_global.h>
1552
1553static inline void
1554drm_gem_object_reference(struct drm_gem_object *obj)
1555{
1556 kref_get(&obj->refcount);
1557}
1558
1559static inline void
1560drm_gem_object_unreference(struct drm_gem_object *obj)
1561{
1562 if (obj != NULL)
1563 kref_put(&obj->refcount, drm_gem_object_free);
1564}
1565
1566static inline void
1567drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1568{
1569 if (obj && !atomic_add_unless(&obj->refcount.refcount, -1, 1)) {
1570 struct drm_device *dev = obj->dev;
1571
1572 mutex_lock(&dev->struct_mutex);
1573 if (likely(atomic_dec_and_test(&obj->refcount.refcount)))
1574 drm_gem_object_free(&obj->refcount);
1575 mutex_unlock(&dev->struct_mutex);
1576 }
1577}
1578
1579int drm_gem_handle_create_tail(struct drm_file *file_priv,
1580 struct drm_gem_object *obj,
1581 u32 *handlep);
1582int drm_gem_handle_create(struct drm_file *file_priv,
1583 struct drm_gem_object *obj,
1584 u32 *handlep);
1585int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
1586
1587
1588void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
1589int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
1590int drm_gem_create_mmap_offset_size(struct drm_gem_object *obj, size_t size);
1591
1592struct page **drm_gem_get_pages(struct drm_gem_object *obj, gfp_t gfpmask);
1593void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages,
1594 bool dirty, bool accessed);
1595
1596struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1597 struct drm_file *filp,
1598 u32 handle);
1599int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1600 struct drm_file *file_priv);
1601int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1602 struct drm_file *file_priv);
1603int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1604 struct drm_file *file_priv);
1605void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1606void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1607
1608extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1609extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1610extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1611
1612static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1613 unsigned int token)
1614{
1615 struct drm_map_list *_entry;
1616 list_for_each_entry(_entry, &dev->maplist, head)
1617 if (_entry->user_token == token)
1618 return _entry->map;
1619 return NULL;
1620}
1621
1622static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1623{
1624}
1625
1626#include <drm/drm_mem_util.h>
1627
1628struct drm_device *drm_dev_alloc(struct drm_driver *driver,
1629 struct device *parent);
1630void drm_dev_ref(struct drm_device *dev);
1631void drm_dev_unref(struct drm_device *dev);
1632int drm_dev_register(struct drm_device *dev, unsigned long flags);
1633void drm_dev_unregister(struct drm_device *dev);
1634
1635struct drm_minor *drm_minor_acquire(unsigned int minor_id);
1636void drm_minor_release(struct drm_minor *minor);
1637
1638/*@}*/
1639
1640/* PCI section */
1641static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1642{
1643 if (dev->driver->device_is_agp != NULL) {
1644 int err = (*dev->driver->device_is_agp) (dev);
1645
1646 if (err != 2) {
1647 return err;
1648 }
1649 }
1650
1651 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1652}
1653void drm_pci_agp_destroy(struct drm_device *dev);
1654
1655extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1656extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1657extern int drm_get_pci_dev(struct pci_dev *pdev,
1658 const struct pci_device_id *ent,
1659 struct drm_driver *driver);
1660
1661#define DRM_PCIE_SPEED_25 1
1662#define DRM_PCIE_SPEED_50 2
1663#define DRM_PCIE_SPEED_80 4
1664
1665extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
1666
1667/* platform section */
1668extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1669
1670/* returns true if currently okay to sleep */
1671static __inline__ bool drm_can_sleep(void)
1672{
1673 if (in_atomic() || in_dbg_master() || irqs_disabled())
1674 return false;
1675 return true;
1676}
1677
1678#endif /* __KERNEL__ */
1679#endif