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/kernel.h>
46#include <linux/miscdevice.h>
47#include <linux/fs.h>
48#include <linux/proc_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/slab.h>
59#if defined(__alpha__) || defined(__powerpc__)
60#include <asm/pgtable.h> /* For pte_wrprotect */
61#endif
62#include <asm/io.h>
63#include <asm/mman.h>
64#include <asm/uaccess.h>
65#ifdef CONFIG_MTRR
66#include <asm/mtrr.h>
67#endif
68#if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
69#include <linux/types.h>
70#include <linux/agp_backend.h>
71#endif
72#include <linux/workqueue.h>
73#include <linux/poll.h>
74#include <asm/pgalloc.h>
75#include "drm.h"
76
77#include <linux/idr.h>
78
79#define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
80#define __OS_HAS_MTRR (defined(CONFIG_MTRR))
81
82struct module;
83
84struct drm_file;
85struct drm_device;
86
87#include "drm_os_linux.h"
88#include "drm_hashtab.h"
89#include "drm_mm.h"
90
91#define DRM_UT_CORE 0x01
92#define DRM_UT_DRIVER 0x02
93#define DRM_UT_KMS 0x04
94#define DRM_UT_PRIME 0x08
95/*
96 * Three debug levels are defined.
97 * drm_core, drm_driver, drm_kms
98 * drm_core level can be used in the generic drm code. For example:
99 * drm_ioctl, drm_mm, drm_memory
100 * The macro definition of DRM_DEBUG is used.
101 * DRM_DEBUG(fmt, args...)
102 * The debug info by using the DRM_DEBUG can be obtained by adding
103 * the boot option of "drm.debug=1".
104 *
105 * drm_driver level can be used in the specific drm driver. It is used
106 * to add the debug info related with the drm driver. For example:
107 * i915_drv, i915_dma, i915_gem, radeon_drv,
108 * The macro definition of DRM_DEBUG_DRIVER can be used.
109 * DRM_DEBUG_DRIVER(fmt, args...)
110 * The debug info by using the DRM_DEBUG_DRIVER can be obtained by
111 * adding the boot option of "drm.debug=0x02"
112 *
113 * drm_kms level can be used in the KMS code related with specific drm driver.
114 * It is used to add the debug info related with KMS mode. For example:
115 * the connector/crtc ,
116 * The macro definition of DRM_DEBUG_KMS can be used.
117 * DRM_DEBUG_KMS(fmt, args...)
118 * The debug info by using the DRM_DEBUG_KMS can be obtained by
119 * adding the boot option of "drm.debug=0x04"
120 *
121 * If we add the boot option of "drm.debug=0x06", we can get the debug info by
122 * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
123 * If we add the boot option of "drm.debug=0x05", we can get the debug info by
124 * using the DRM_DEBUG_KMS and DRM_DEBUG.
125 */
126
127extern __printf(4, 5)
128void drm_ut_debug_printk(unsigned int request_level,
129 const char *prefix,
130 const char *function_name,
131 const char *format, ...);
132extern __printf(2, 3)
133int drm_err(const char *func, const char *format, ...);
134
135/***********************************************************************/
136/** \name DRM template customization defaults */
137/*@{*/
138
139/* driver capabilities and requirements mask */
140#define DRIVER_USE_AGP 0x1
141#define DRIVER_REQUIRE_AGP 0x2
142#define DRIVER_USE_MTRR 0x4
143#define DRIVER_PCI_DMA 0x8
144#define DRIVER_SG 0x10
145#define DRIVER_HAVE_DMA 0x20
146#define DRIVER_HAVE_IRQ 0x40
147#define DRIVER_IRQ_SHARED 0x80
148#define DRIVER_IRQ_VBL 0x100
149#define DRIVER_DMA_QUEUE 0x200
150#define DRIVER_FB_DMA 0x400
151#define DRIVER_IRQ_VBL2 0x800
152#define DRIVER_GEM 0x1000
153#define DRIVER_MODESET 0x2000
154#define DRIVER_PRIME 0x4000
155
156#define DRIVER_BUS_PCI 0x1
157#define DRIVER_BUS_PLATFORM 0x2
158#define DRIVER_BUS_USB 0x3
159
160/***********************************************************************/
161/** \name Begin the DRM... */
162/*@{*/
163
164#define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
165 also include looping detection. */
166
167#define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
168#define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
169#define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
170#define DRM_LOOPING_LIMIT 5000000
171#define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
172#define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
173
174#define DRM_FLAG_DEBUG 0x01
175
176#define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
177#define DRM_MAP_HASH_OFFSET 0x10000000
178
179/*@}*/
180
181/***********************************************************************/
182/** \name Macros to make printk easier */
183/*@{*/
184
185/**
186 * Error output.
187 *
188 * \param fmt printf() like format string.
189 * \param arg arguments
190 */
191#define DRM_ERROR(fmt, ...) \
192 drm_err(__func__, fmt, ##__VA_ARGS__)
193
194#define DRM_INFO(fmt, ...) \
195 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
196
197/**
198 * Debug output.
199 *
200 * \param fmt printf() like format string.
201 * \param arg arguments
202 */
203#if DRM_DEBUG_CODE
204#define DRM_DEBUG(fmt, args...) \
205 do { \
206 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
207 __func__, fmt, ##args); \
208 } while (0)
209
210#define DRM_DEBUG_DRIVER(fmt, args...) \
211 do { \
212 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
213 __func__, fmt, ##args); \
214 } while (0)
215#define DRM_DEBUG_KMS(fmt, args...) \
216 do { \
217 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
218 __func__, fmt, ##args); \
219 } while (0)
220#define DRM_DEBUG_PRIME(fmt, args...) \
221 do { \
222 drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME, \
223 __func__, fmt, ##args); \
224 } while (0)
225#define DRM_LOG(fmt, args...) \
226 do { \
227 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
228 NULL, fmt, ##args); \
229 } while (0)
230#define DRM_LOG_KMS(fmt, args...) \
231 do { \
232 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
233 NULL, fmt, ##args); \
234 } while (0)
235#define DRM_LOG_MODE(fmt, args...) \
236 do { \
237 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
238 NULL, fmt, ##args); \
239 } while (0)
240#define DRM_LOG_DRIVER(fmt, args...) \
241 do { \
242 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
243 NULL, fmt, ##args); \
244 } while (0)
245#else
246#define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
247#define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
248#define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
249#define DRM_DEBUG(fmt, arg...) do { } while (0)
250#define DRM_LOG(fmt, arg...) do { } while (0)
251#define DRM_LOG_KMS(fmt, args...) do { } while (0)
252#define DRM_LOG_MODE(fmt, arg...) do { } while (0)
253#define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
254
255#endif
256
257/*@}*/
258
259/***********************************************************************/
260/** \name Internal types and structures */
261/*@{*/
262
263#define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
264
265#define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
266#define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
267
268#define DRM_IF_VERSION(maj, min) (maj << 16 | min)
269
270/**
271 * Test that the hardware lock is held by the caller, returning otherwise.
272 *
273 * \param dev DRM device.
274 * \param filp file pointer of the caller.
275 */
276#define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
277do { \
278 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
279 _file_priv->master->lock.file_priv != _file_priv) { \
280 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
281 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
282 _file_priv->master->lock.file_priv, _file_priv); \
283 return -EINVAL; \
284 } \
285} while (0)
286
287/**
288 * Ioctl function type.
289 *
290 * \param inode device inode.
291 * \param file_priv DRM file private pointer.
292 * \param cmd command.
293 * \param arg argument.
294 */
295typedef int drm_ioctl_t(struct drm_device *dev, void *data,
296 struct drm_file *file_priv);
297
298typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
299 unsigned long arg);
300
301#define DRM_IOCTL_NR(n) _IOC_NR(n)
302#define DRM_MAJOR 226
303
304#define DRM_AUTH 0x1
305#define DRM_MASTER 0x2
306#define DRM_ROOT_ONLY 0x4
307#define DRM_CONTROL_ALLOW 0x8
308#define DRM_UNLOCKED 0x10
309
310struct drm_ioctl_desc {
311 unsigned int cmd;
312 int flags;
313 drm_ioctl_t *func;
314 unsigned int cmd_drv;
315};
316
317/**
318 * Creates a driver or general drm_ioctl_desc array entry for the given
319 * ioctl, for use by drm_ioctl().
320 */
321
322#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
323 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl}
324
325struct drm_magic_entry {
326 struct list_head head;
327 struct drm_hash_item hash_item;
328 struct drm_file *priv;
329};
330
331struct drm_vma_entry {
332 struct list_head head;
333 struct vm_area_struct *vma;
334 pid_t pid;
335};
336
337/**
338 * DMA buffer.
339 */
340struct drm_buf {
341 int idx; /**< Index into master buflist */
342 int total; /**< Buffer size */
343 int order; /**< log-base-2(total) */
344 int used; /**< Amount of buffer in use (for DMA) */
345 unsigned long offset; /**< Byte offset (used internally) */
346 void *address; /**< Address of buffer */
347 unsigned long bus_address; /**< Bus address of buffer */
348 struct drm_buf *next; /**< Kernel-only: used for free list */
349 __volatile__ int waiting; /**< On kernel DMA queue */
350 __volatile__ int pending; /**< On hardware DMA queue */
351 wait_queue_head_t dma_wait; /**< Processes waiting */
352 struct drm_file *file_priv; /**< Private of holding file descr */
353 int context; /**< Kernel queue for this buffer */
354 int while_locked; /**< Dispatch this buffer while locked */
355 enum {
356 DRM_LIST_NONE = 0,
357 DRM_LIST_FREE = 1,
358 DRM_LIST_WAIT = 2,
359 DRM_LIST_PEND = 3,
360 DRM_LIST_PRIO = 4,
361 DRM_LIST_RECLAIM = 5
362 } list; /**< Which list we're on */
363
364 int dev_priv_size; /**< Size of buffer private storage */
365 void *dev_private; /**< Per-buffer private storage */
366};
367
368/** bufs is one longer than it has to be */
369struct drm_waitlist {
370 int count; /**< Number of possible buffers */
371 struct drm_buf **bufs; /**< List of pointers to buffers */
372 struct drm_buf **rp; /**< Read pointer */
373 struct drm_buf **wp; /**< Write pointer */
374 struct drm_buf **end; /**< End pointer */
375 spinlock_t read_lock;
376 spinlock_t write_lock;
377};
378
379struct drm_freelist {
380 int initialized; /**< Freelist in use */
381 atomic_t count; /**< Number of free buffers */
382 struct drm_buf *next; /**< End pointer */
383
384 wait_queue_head_t waiting; /**< Processes waiting on free bufs */
385 int low_mark; /**< Low water mark */
386 int high_mark; /**< High water mark */
387 atomic_t wfh; /**< If waiting for high mark */
388 spinlock_t lock;
389};
390
391typedef struct drm_dma_handle {
392 dma_addr_t busaddr;
393 void *vaddr;
394 size_t size;
395} drm_dma_handle_t;
396
397/**
398 * Buffer entry. There is one of this for each buffer size order.
399 */
400struct drm_buf_entry {
401 int buf_size; /**< size */
402 int buf_count; /**< number of buffers */
403 struct drm_buf *buflist; /**< buffer list */
404 int seg_count;
405 int page_order;
406 struct drm_dma_handle **seglist;
407
408 struct drm_freelist freelist;
409};
410
411/* Event queued up for userspace to read */
412struct drm_pending_event {
413 struct drm_event *event;
414 struct list_head link;
415 struct drm_file *file_priv;
416 pid_t pid; /* pid of requester, no guarantee it's valid by the time
417 we deliver the event, for tracing only */
418 void (*destroy)(struct drm_pending_event *event);
419};
420
421/* initial implementaton using a linked list - todo hashtab */
422struct drm_prime_file_private {
423 struct list_head head;
424 struct mutex lock;
425};
426
427/** File private data */
428struct drm_file {
429 int authenticated;
430 pid_t pid;
431 uid_t uid;
432 drm_magic_t magic;
433 unsigned long ioctl_count;
434 struct list_head lhead;
435 struct drm_minor *minor;
436 unsigned long lock_count;
437
438 /** Mapping of mm object handles to object pointers. */
439 struct idr object_idr;
440 /** Lock for synchronization of access to object_idr. */
441 spinlock_t table_lock;
442
443 struct file *filp;
444 void *driver_priv;
445
446 int is_master; /* this file private is a master for a minor */
447 struct drm_master *master; /* master this node is currently associated with
448 N.B. not always minor->master */
449 struct list_head fbs;
450
451 wait_queue_head_t event_wait;
452 struct list_head event_list;
453 int event_space;
454
455 struct drm_prime_file_private prime;
456};
457
458/** Wait queue */
459struct drm_queue {
460 atomic_t use_count; /**< Outstanding uses (+1) */
461 atomic_t finalization; /**< Finalization in progress */
462 atomic_t block_count; /**< Count of processes waiting */
463 atomic_t block_read; /**< Queue blocked for reads */
464 wait_queue_head_t read_queue; /**< Processes waiting on block_read */
465 atomic_t block_write; /**< Queue blocked for writes */
466 wait_queue_head_t write_queue; /**< Processes waiting on block_write */
467 atomic_t total_queued; /**< Total queued statistic */
468 atomic_t total_flushed; /**< Total flushes statistic */
469 atomic_t total_locks; /**< Total locks statistics */
470 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
471 struct drm_waitlist waitlist; /**< Pending buffers */
472 wait_queue_head_t flush_queue; /**< Processes waiting until flush */
473};
474
475/**
476 * Lock data.
477 */
478struct drm_lock_data {
479 struct drm_hw_lock *hw_lock; /**< Hardware lock */
480 /** Private of lock holder's file (NULL=kernel) */
481 struct drm_file *file_priv;
482 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
483 unsigned long lock_time; /**< Time of last lock in jiffies */
484 spinlock_t spinlock;
485 uint32_t kernel_waiters;
486 uint32_t user_waiters;
487 int idle_has_lock;
488};
489
490/**
491 * DMA data.
492 */
493struct drm_device_dma {
494
495 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
496 int buf_count; /**< total number of buffers */
497 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
498 int seg_count;
499 int page_count; /**< number of pages */
500 unsigned long *pagelist; /**< page list */
501 unsigned long byte_count;
502 enum {
503 _DRM_DMA_USE_AGP = 0x01,
504 _DRM_DMA_USE_SG = 0x02,
505 _DRM_DMA_USE_FB = 0x04,
506 _DRM_DMA_USE_PCI_RO = 0x08
507 } flags;
508
509};
510
511/**
512 * AGP memory entry. Stored as a doubly linked list.
513 */
514struct drm_agp_mem {
515 unsigned long handle; /**< handle */
516 DRM_AGP_MEM *memory;
517 unsigned long bound; /**< address */
518 int pages;
519 struct list_head head;
520};
521
522/**
523 * AGP data.
524 *
525 * \sa drm_agp_init() and drm_device::agp.
526 */
527struct drm_agp_head {
528 DRM_AGP_KERN agp_info; /**< AGP device information */
529 struct list_head memory;
530 unsigned long mode; /**< AGP mode */
531 struct agp_bridge_data *bridge;
532 int enabled; /**< whether the AGP bus as been enabled */
533 int acquired; /**< whether the AGP device has been acquired */
534 unsigned long base;
535 int agp_mtrr;
536 int cant_use_aperture;
537 unsigned long page_mask;
538};
539
540/**
541 * Scatter-gather memory.
542 */
543struct drm_sg_mem {
544 unsigned long handle;
545 void *virtual;
546 int pages;
547 struct page **pagelist;
548 dma_addr_t *busaddr;
549};
550
551struct drm_sigdata {
552 int context;
553 struct drm_hw_lock *lock;
554};
555
556
557/**
558 * Kernel side of a mapping
559 */
560struct drm_local_map {
561 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
562 unsigned long size; /**< Requested physical size (bytes) */
563 enum drm_map_type type; /**< Type of memory to map */
564 enum drm_map_flags flags; /**< Flags */
565 void *handle; /**< User-space: "Handle" to pass to mmap() */
566 /**< Kernel-space: kernel-virtual address */
567 int mtrr; /**< MTRR slot used */
568};
569
570typedef struct drm_local_map drm_local_map_t;
571
572/**
573 * Mappings list
574 */
575struct drm_map_list {
576 struct list_head head; /**< list head */
577 struct drm_hash_item hash;
578 struct drm_local_map *map; /**< mapping */
579 uint64_t user_token;
580 struct drm_master *master;
581 struct drm_mm_node *file_offset_node; /**< fake offset */
582};
583
584/**
585 * Context handle list
586 */
587struct drm_ctx_list {
588 struct list_head head; /**< list head */
589 drm_context_t handle; /**< context handle */
590 struct drm_file *tag; /**< associated fd private data */
591};
592
593/* location of GART table */
594#define DRM_ATI_GART_MAIN 1
595#define DRM_ATI_GART_FB 2
596
597#define DRM_ATI_GART_PCI 1
598#define DRM_ATI_GART_PCIE 2
599#define DRM_ATI_GART_IGP 3
600
601struct drm_ati_pcigart_info {
602 int gart_table_location;
603 int gart_reg_if;
604 void *addr;
605 dma_addr_t bus_addr;
606 dma_addr_t table_mask;
607 struct drm_dma_handle *table_handle;
608 struct drm_local_map mapping;
609 int table_size;
610};
611
612/**
613 * GEM specific mm private for tracking GEM objects
614 */
615struct drm_gem_mm {
616 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */
617 struct drm_open_hash offset_hash; /**< User token hash table for maps */
618};
619
620/**
621 * This structure defines the drm_mm memory object, which will be used by the
622 * DRM for its buffer objects.
623 */
624struct drm_gem_object {
625 /** Reference count of this object */
626 struct kref refcount;
627
628 /** Handle count of this object. Each handle also holds a reference */
629 atomic_t handle_count; /* number of handles on this object */
630
631 /** Related drm device */
632 struct drm_device *dev;
633
634 /** File representing the shmem storage */
635 struct file *filp;
636
637 /* Mapping info for this object */
638 struct drm_map_list map_list;
639
640 /**
641 * Size of the object, in bytes. Immutable over the object's
642 * lifetime.
643 */
644 size_t size;
645
646 /**
647 * Global name for this object, starts at 1. 0 means unnamed.
648 * Access is covered by the object_name_lock in the related drm_device
649 */
650 int name;
651
652 /**
653 * Memory domains. These monitor which caches contain read/write data
654 * related to the object. When transitioning from one set of domains
655 * to another, the driver is called to ensure that caches are suitably
656 * flushed and invalidated
657 */
658 uint32_t read_domains;
659 uint32_t write_domain;
660
661 /**
662 * While validating an exec operation, the
663 * new read/write domain values are computed here.
664 * They will be transferred to the above values
665 * at the point that any cache flushing occurs
666 */
667 uint32_t pending_read_domains;
668 uint32_t pending_write_domain;
669
670 void *driver_private;
671
672 /* dma buf exported from this GEM object */
673 struct dma_buf *export_dma_buf;
674
675 /* dma buf attachment backing this object */
676 struct dma_buf_attachment *import_attach;
677};
678
679#include "drm_crtc.h"
680
681/* per-master structure */
682struct drm_master {
683
684 struct kref refcount; /* refcount for this master */
685
686 struct list_head head; /**< each minor contains a list of masters */
687 struct drm_minor *minor; /**< link back to minor we are a master for */
688
689 char *unique; /**< Unique identifier: e.g., busid */
690 int unique_len; /**< Length of unique field */
691 int unique_size; /**< amount allocated */
692
693 int blocked; /**< Blocked due to VC switch? */
694
695 /** \name Authentication */
696 /*@{ */
697 struct drm_open_hash magiclist;
698 struct list_head magicfree;
699 /*@} */
700
701 struct drm_lock_data lock; /**< Information on hardware lock */
702
703 void *driver_priv; /**< Private structure for driver to use */
704};
705
706/* Size of ringbuffer for vblank timestamps. Just double-buffer
707 * in initial implementation.
708 */
709#define DRM_VBLANKTIME_RBSIZE 2
710
711/* Flags and return codes for get_vblank_timestamp() driver function. */
712#define DRM_CALLED_FROM_VBLIRQ 1
713#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
714#define DRM_VBLANKTIME_INVBL (1 << 1)
715
716/* get_scanout_position() return flags */
717#define DRM_SCANOUTPOS_VALID (1 << 0)
718#define DRM_SCANOUTPOS_INVBL (1 << 1)
719#define DRM_SCANOUTPOS_ACCURATE (1 << 2)
720
721struct drm_bus {
722 int bus_type;
723 int (*get_irq)(struct drm_device *dev);
724 const char *(*get_name)(struct drm_device *dev);
725 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
726 int (*set_unique)(struct drm_device *dev, struct drm_master *master,
727 struct drm_unique *unique);
728 int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
729 /* hooks that are for PCI */
730 int (*agp_init)(struct drm_device *dev);
731
732};
733
734/**
735 * DRM driver structure. This structure represent the common code for
736 * a family of cards. There will one drm_device for each card present
737 * in this family
738 */
739struct drm_driver {
740 int (*load) (struct drm_device *, unsigned long flags);
741 int (*firstopen) (struct drm_device *);
742 int (*open) (struct drm_device *, struct drm_file *);
743 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
744 void (*postclose) (struct drm_device *, struct drm_file *);
745 void (*lastclose) (struct drm_device *);
746 int (*unload) (struct drm_device *);
747 int (*suspend) (struct drm_device *, pm_message_t state);
748 int (*resume) (struct drm_device *);
749 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
750 int (*dma_quiescent) (struct drm_device *);
751 int (*context_dtor) (struct drm_device *dev, int context);
752
753 /**
754 * get_vblank_counter - get raw hardware vblank counter
755 * @dev: DRM device
756 * @crtc: counter to fetch
757 *
758 * Driver callback for fetching a raw hardware vblank counter for @crtc.
759 * If a device doesn't have a hardware counter, the driver can simply
760 * return the value of drm_vblank_count. The DRM core will account for
761 * missed vblank events while interrupts where disabled based on system
762 * timestamps.
763 *
764 * Wraparound handling and loss of events due to modesetting is dealt
765 * with in the DRM core code.
766 *
767 * RETURNS
768 * Raw vblank counter value.
769 */
770 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
771
772 /**
773 * enable_vblank - enable vblank interrupt events
774 * @dev: DRM device
775 * @crtc: which irq to enable
776 *
777 * Enable vblank interrupts for @crtc. If the device doesn't have
778 * a hardware vblank counter, this routine should be a no-op, since
779 * interrupts will have to stay on to keep the count accurate.
780 *
781 * RETURNS
782 * Zero on success, appropriate errno if the given @crtc's vblank
783 * interrupt cannot be enabled.
784 */
785 int (*enable_vblank) (struct drm_device *dev, int crtc);
786
787 /**
788 * disable_vblank - disable vblank interrupt events
789 * @dev: DRM device
790 * @crtc: which irq to enable
791 *
792 * Disable vblank interrupts for @crtc. If the device doesn't have
793 * a hardware vblank counter, this routine should be a no-op, since
794 * interrupts will have to stay on to keep the count accurate.
795 */
796 void (*disable_vblank) (struct drm_device *dev, int crtc);
797
798 /**
799 * Called by \c drm_device_is_agp. Typically used to determine if a
800 * card is really attached to AGP or not.
801 *
802 * \param dev DRM device handle
803 *
804 * \returns
805 * One of three values is returned depending on whether or not the
806 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
807 * (return of 1), or may or may not be AGP (return of 2).
808 */
809 int (*device_is_agp) (struct drm_device *dev);
810
811 /**
812 * Called by vblank timestamping code.
813 *
814 * Return the current display scanout position from a crtc.
815 *
816 * \param dev DRM device.
817 * \param crtc Id of the crtc to query.
818 * \param *vpos Target location for current vertical scanout position.
819 * \param *hpos Target location for current horizontal scanout position.
820 *
821 * Returns vpos as a positive number while in active scanout area.
822 * Returns vpos as a negative number inside vblank, counting the number
823 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
824 * until start of active scanout / end of vblank."
825 *
826 * \return Flags, or'ed together as follows:
827 *
828 * DRM_SCANOUTPOS_VALID = Query successful.
829 * DRM_SCANOUTPOS_INVBL = Inside vblank.
830 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
831 * this flag means that returned position may be offset by a constant
832 * but unknown small number of scanlines wrt. real scanout position.
833 *
834 */
835 int (*get_scanout_position) (struct drm_device *dev, int crtc,
836 int *vpos, int *hpos);
837
838 /**
839 * Called by \c drm_get_last_vbltimestamp. Should return a precise
840 * timestamp when the most recent VBLANK interval ended or will end.
841 *
842 * Specifically, the timestamp in @vblank_time should correspond as
843 * closely as possible to the time when the first video scanline of
844 * the video frame after the end of VBLANK will start scanning out,
845 * the time immediately after end of the VBLANK interval. If the
846 * @crtc is currently inside VBLANK, this will be a time in the future.
847 * If the @crtc is currently scanning out a frame, this will be the
848 * past start time of the current scanout. This is meant to adhere
849 * to the OpenML OML_sync_control extension specification.
850 *
851 * \param dev dev DRM device handle.
852 * \param crtc crtc for which timestamp should be returned.
853 * \param *max_error Maximum allowable timestamp error in nanoseconds.
854 * Implementation should strive to provide timestamp
855 * with an error of at most *max_error nanoseconds.
856 * Returns true upper bound on error for timestamp.
857 * \param *vblank_time Target location for returned vblank timestamp.
858 * \param flags 0 = Defaults, no special treatment needed.
859 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
860 * irq handler. Some drivers need to apply some workarounds
861 * for gpu-specific vblank irq quirks if flag is set.
862 *
863 * \returns
864 * Zero if timestamping isn't supported in current display mode or a
865 * negative number on failure. A positive status code on success,
866 * which describes how the vblank_time timestamp was computed.
867 */
868 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
869 int *max_error,
870 struct timeval *vblank_time,
871 unsigned flags);
872
873 /* these have to be filled in */
874
875 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
876 void (*irq_preinstall) (struct drm_device *dev);
877 int (*irq_postinstall) (struct drm_device *dev);
878 void (*irq_uninstall) (struct drm_device *dev);
879 void (*reclaim_buffers) (struct drm_device *dev,
880 struct drm_file * file_priv);
881 void (*reclaim_buffers_locked) (struct drm_device *dev,
882 struct drm_file *file_priv);
883 void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
884 struct drm_file *file_priv);
885 void (*set_version) (struct drm_device *dev,
886 struct drm_set_version *sv);
887
888 /* Master routines */
889 int (*master_create)(struct drm_device *dev, struct drm_master *master);
890 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
891 /**
892 * master_set is called whenever the minor master is set.
893 * master_drop is called whenever the minor master is dropped.
894 */
895
896 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
897 bool from_open);
898 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
899 bool from_release);
900
901 int (*debugfs_init)(struct drm_minor *minor);
902 void (*debugfs_cleanup)(struct drm_minor *minor);
903
904 /**
905 * Driver-specific constructor for drm_gem_objects, to set up
906 * obj->driver_private.
907 *
908 * Returns 0 on success.
909 */
910 int (*gem_init_object) (struct drm_gem_object *obj);
911 void (*gem_free_object) (struct drm_gem_object *obj);
912 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
913 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
914
915 /* prime: */
916 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
917 int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
918 uint32_t handle, uint32_t flags, int *prime_fd);
919 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
920 int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
921 int prime_fd, uint32_t *handle);
922 /* export GEM -> dmabuf */
923 struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
924 struct drm_gem_object *obj, int flags);
925 /* import dmabuf -> GEM */
926 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
927 struct dma_buf *dma_buf);
928
929 /* vga arb irq handler */
930 void (*vgaarb_irq)(struct drm_device *dev, bool state);
931
932 /* dumb alloc support */
933 int (*dumb_create)(struct drm_file *file_priv,
934 struct drm_device *dev,
935 struct drm_mode_create_dumb *args);
936 int (*dumb_map_offset)(struct drm_file *file_priv,
937 struct drm_device *dev, uint32_t handle,
938 uint64_t *offset);
939 int (*dumb_destroy)(struct drm_file *file_priv,
940 struct drm_device *dev,
941 uint32_t handle);
942
943 /* Driver private ops for this object */
944 const struct vm_operations_struct *gem_vm_ops;
945
946 int major;
947 int minor;
948 int patchlevel;
949 char *name;
950 char *desc;
951 char *date;
952
953 u32 driver_features;
954 int dev_priv_size;
955 struct drm_ioctl_desc *ioctls;
956 int num_ioctls;
957 const struct file_operations *fops;
958 union {
959 struct pci_driver *pci;
960 struct platform_device *platform_device;
961 struct usb_driver *usb;
962 } kdriver;
963 struct drm_bus *bus;
964
965 /* List of devices hanging off this driver */
966 struct list_head device_list;
967};
968
969#define DRM_MINOR_UNASSIGNED 0
970#define DRM_MINOR_LEGACY 1
971#define DRM_MINOR_CONTROL 2
972#define DRM_MINOR_RENDER 3
973
974
975/**
976 * debugfs node list. This structure represents a debugfs file to
977 * be created by the drm core
978 */
979struct drm_debugfs_list {
980 const char *name; /** file name */
981 int (*show)(struct seq_file*, void*); /** show callback */
982 u32 driver_features; /**< Required driver features for this entry */
983};
984
985/**
986 * debugfs node structure. This structure represents a debugfs file.
987 */
988struct drm_debugfs_node {
989 struct list_head list;
990 struct drm_minor *minor;
991 struct drm_debugfs_list *debugfs_ent;
992 struct dentry *dent;
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 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 dev_t device; /**< Device number for mknod */
1023 struct device kdev; /**< Linux device */
1024 struct drm_device *dev;
1025
1026 struct proc_dir_entry *proc_root; /**< proc directory entry */
1027 struct drm_info_node proc_nodes;
1028 struct dentry *debugfs_root;
1029
1030 struct list_head debugfs_list;
1031 struct mutex debugfs_lock; /* Protects debugfs_list. */
1032
1033 struct drm_master *master; /* currently active master for this node */
1034 struct list_head master_list;
1035 struct drm_mode_group mode_group;
1036};
1037
1038/* mode specified on the command line */
1039struct drm_cmdline_mode {
1040 bool specified;
1041 bool refresh_specified;
1042 bool bpp_specified;
1043 int xres, yres;
1044 int bpp;
1045 int refresh;
1046 bool rb;
1047 bool interlace;
1048 bool cvt;
1049 bool margins;
1050 enum drm_connector_force force;
1051};
1052
1053
1054struct drm_pending_vblank_event {
1055 struct drm_pending_event base;
1056 int pipe;
1057 struct drm_event_vblank event;
1058};
1059
1060/**
1061 * DRM device structure. This structure represent a complete card that
1062 * may contain multiple heads.
1063 */
1064struct drm_device {
1065 struct list_head driver_item; /**< list of devices per driver */
1066 char *devname; /**< For /proc/interrupts */
1067 int if_version; /**< Highest interface version set */
1068
1069 /** \name Locks */
1070 /*@{ */
1071 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1072 struct mutex struct_mutex; /**< For others */
1073 /*@} */
1074
1075 /** \name Usage Counters */
1076 /*@{ */
1077 int open_count; /**< Outstanding files open */
1078 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
1079 atomic_t vma_count; /**< Outstanding vma areas open */
1080 int buf_use; /**< Buffers in use -- cannot alloc */
1081 atomic_t buf_alloc; /**< Buffer allocation in progress */
1082 /*@} */
1083
1084 /** \name Performance counters */
1085 /*@{ */
1086 unsigned long counters;
1087 enum drm_stat_type types[15];
1088 atomic_t counts[15];
1089 /*@} */
1090
1091 struct list_head filelist;
1092
1093 /** \name Memory management */
1094 /*@{ */
1095 struct list_head maplist; /**< Linked list of regions */
1096 int map_count; /**< Number of mappable regions */
1097 struct drm_open_hash map_hash; /**< User token hash table for maps */
1098
1099 /** \name Context handle management */
1100 /*@{ */
1101 struct list_head ctxlist; /**< Linked list of context handles */
1102 int ctx_count; /**< Number of context handles */
1103 struct mutex ctxlist_mutex; /**< For ctxlist */
1104
1105 struct idr ctx_idr;
1106
1107 struct list_head vmalist; /**< List of vmas (for debugging) */
1108
1109 /*@} */
1110
1111 /** \name DMA queues (contexts) */
1112 /*@{ */
1113 int queue_count; /**< Number of active DMA queues */
1114 int queue_reserved; /**< Number of reserved DMA queues */
1115 int queue_slots; /**< Actual length of queuelist */
1116 struct drm_queue **queuelist; /**< Vector of pointers to DMA queues */
1117 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1118 /*@} */
1119
1120 /** \name Context support */
1121 /*@{ */
1122 int irq_enabled; /**< True if irq handler is enabled */
1123 __volatile__ long context_flag; /**< Context swapping flag */
1124 __volatile__ long interrupt_flag; /**< Interruption handler flag */
1125 __volatile__ long dma_flag; /**< DMA dispatch flag */
1126 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
1127 int last_checked; /**< Last context checked for DMA */
1128 int last_context; /**< Last current context */
1129 unsigned long last_switch; /**< jiffies at last context switch */
1130 /*@} */
1131
1132 struct work_struct work;
1133 /** \name VBLANK IRQ support */
1134 /*@{ */
1135
1136 /*
1137 * At load time, disabling the vblank interrupt won't be allowed since
1138 * old clients may not call the modeset ioctl and therefore misbehave.
1139 * Once the modeset ioctl *has* been called though, we can safely
1140 * disable them when unused.
1141 */
1142 int vblank_disable_allowed;
1143
1144 wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */
1145 atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1146 struct timeval *_vblank_time; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1147 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1148 spinlock_t vbl_lock;
1149 atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */
1150 u32 *last_vblank; /* protected by dev->vbl_lock, used */
1151 /* for wraparound handling */
1152 int *vblank_enabled; /* so we don't call enable more than
1153 once per disable */
1154 int *vblank_inmodeset; /* Display driver is setting mode */
1155 u32 *last_vblank_wait; /* Last vblank seqno waited per CRTC */
1156 struct timer_list vblank_disable_timer;
1157
1158 u32 max_vblank_count; /**< size of vblank counter register */
1159
1160 /**
1161 * List of events
1162 */
1163 struct list_head vblank_event_list;
1164 spinlock_t event_lock;
1165
1166 /*@} */
1167 cycles_t ctx_start;
1168 cycles_t lck_start;
1169
1170 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
1171 wait_queue_head_t buf_readers; /**< Processes waiting to read */
1172 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
1173
1174 struct drm_agp_head *agp; /**< AGP data */
1175
1176 struct device *dev; /**< Device structure */
1177 struct pci_dev *pdev; /**< PCI device structure */
1178 int pci_vendor; /**< PCI vendor id */
1179 int pci_device; /**< PCI device id */
1180#ifdef __alpha__
1181 struct pci_controller *hose;
1182#endif
1183
1184 struct platform_device *platformdev; /**< Platform device struture */
1185 struct usb_device *usbdev;
1186
1187 struct drm_sg_mem *sg; /**< Scatter gather memory */
1188 unsigned int num_crtcs; /**< Number of CRTCs on this device */
1189 void *dev_private; /**< device private data */
1190 void *mm_private;
1191 struct address_space *dev_mapping;
1192 struct drm_sigdata sigdata; /**< For block_all_signals */
1193 sigset_t sigmask;
1194
1195 struct drm_driver *driver;
1196 struct drm_local_map *agp_buffer_map;
1197 unsigned int agp_buffer_token;
1198 struct drm_minor *control; /**< Control node for card */
1199 struct drm_minor *primary; /**< render type primary screen head */
1200
1201 struct drm_mode_config mode_config; /**< Current mode config */
1202
1203 /** \name GEM information */
1204 /*@{ */
1205 spinlock_t object_name_lock;
1206 struct idr object_name_idr;
1207 /*@} */
1208 int switch_power_state;
1209
1210 atomic_t unplugged; /* device has been unplugged or gone away */
1211};
1212
1213#define DRM_SWITCH_POWER_ON 0
1214#define DRM_SWITCH_POWER_OFF 1
1215#define DRM_SWITCH_POWER_CHANGING 2
1216
1217static __inline__ int drm_core_check_feature(struct drm_device *dev,
1218 int feature)
1219{
1220 return ((dev->driver->driver_features & feature) ? 1 : 0);
1221}
1222
1223static inline int drm_dev_to_irq(struct drm_device *dev)
1224{
1225 return dev->driver->bus->get_irq(dev);
1226}
1227
1228
1229#if __OS_HAS_AGP
1230static inline int drm_core_has_AGP(struct drm_device *dev)
1231{
1232 return drm_core_check_feature(dev, DRIVER_USE_AGP);
1233}
1234#else
1235#define drm_core_has_AGP(dev) (0)
1236#endif
1237
1238#if __OS_HAS_MTRR
1239static inline int drm_core_has_MTRR(struct drm_device *dev)
1240{
1241 return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1242}
1243
1244#define DRM_MTRR_WC MTRR_TYPE_WRCOMB
1245
1246static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1247 unsigned int flags)
1248{
1249 return mtrr_add(offset, size, flags, 1);
1250}
1251
1252static inline int drm_mtrr_del(int handle, unsigned long offset,
1253 unsigned long size, unsigned int flags)
1254{
1255 return mtrr_del(handle, offset, size);
1256}
1257
1258#else
1259#define drm_core_has_MTRR(dev) (0)
1260
1261#define DRM_MTRR_WC 0
1262
1263static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1264 unsigned int flags)
1265{
1266 return 0;
1267}
1268
1269static inline int drm_mtrr_del(int handle, unsigned long offset,
1270 unsigned long size, unsigned int flags)
1271{
1272 return 0;
1273}
1274#endif
1275
1276static inline void drm_device_set_unplugged(struct drm_device *dev)
1277{
1278 smp_wmb();
1279 atomic_set(&dev->unplugged, 1);
1280}
1281
1282static inline int drm_device_is_unplugged(struct drm_device *dev)
1283{
1284 int ret = atomic_read(&dev->unplugged);
1285 smp_rmb();
1286 return ret;
1287}
1288
1289/******************************************************************/
1290/** \name Internal function definitions */
1291/*@{*/
1292
1293 /* Driver support (drm_drv.h) */
1294extern long drm_ioctl(struct file *filp,
1295 unsigned int cmd, unsigned long arg);
1296extern long drm_compat_ioctl(struct file *filp,
1297 unsigned int cmd, unsigned long arg);
1298extern int drm_lastclose(struct drm_device *dev);
1299
1300 /* Device support (drm_fops.h) */
1301extern struct mutex drm_global_mutex;
1302extern int drm_open(struct inode *inode, struct file *filp);
1303extern int drm_stub_open(struct inode *inode, struct file *filp);
1304extern int drm_fasync(int fd, struct file *filp, int on);
1305extern ssize_t drm_read(struct file *filp, char __user *buffer,
1306 size_t count, loff_t *offset);
1307extern int drm_release(struct inode *inode, struct file *filp);
1308
1309 /* Mapping support (drm_vm.h) */
1310extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1311extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1312extern void drm_vm_open_locked(struct drm_device *dev, struct vm_area_struct *vma);
1313extern void drm_vm_close_locked(struct drm_device *dev, struct vm_area_struct *vma);
1314extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1315
1316 /* Memory management support (drm_memory.h) */
1317#include "drm_memory.h"
1318extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
1319extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
1320extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
1321 struct page **pages,
1322 unsigned long num_pages,
1323 uint32_t gtt_offset,
1324 uint32_t type);
1325extern int drm_unbind_agp(DRM_AGP_MEM * handle);
1326
1327 /* Misc. IOCTL support (drm_ioctl.h) */
1328extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1329 struct drm_file *file_priv);
1330extern int drm_getunique(struct drm_device *dev, void *data,
1331 struct drm_file *file_priv);
1332extern int drm_setunique(struct drm_device *dev, void *data,
1333 struct drm_file *file_priv);
1334extern int drm_getmap(struct drm_device *dev, void *data,
1335 struct drm_file *file_priv);
1336extern int drm_getclient(struct drm_device *dev, void *data,
1337 struct drm_file *file_priv);
1338extern int drm_getstats(struct drm_device *dev, void *data,
1339 struct drm_file *file_priv);
1340extern int drm_getcap(struct drm_device *dev, void *data,
1341 struct drm_file *file_priv);
1342extern int drm_setversion(struct drm_device *dev, void *data,
1343 struct drm_file *file_priv);
1344extern int drm_noop(struct drm_device *dev, void *data,
1345 struct drm_file *file_priv);
1346
1347 /* Context IOCTL support (drm_context.h) */
1348extern int drm_resctx(struct drm_device *dev, void *data,
1349 struct drm_file *file_priv);
1350extern int drm_addctx(struct drm_device *dev, void *data,
1351 struct drm_file *file_priv);
1352extern int drm_modctx(struct drm_device *dev, void *data,
1353 struct drm_file *file_priv);
1354extern int drm_getctx(struct drm_device *dev, void *data,
1355 struct drm_file *file_priv);
1356extern int drm_switchctx(struct drm_device *dev, void *data,
1357 struct drm_file *file_priv);
1358extern int drm_newctx(struct drm_device *dev, void *data,
1359 struct drm_file *file_priv);
1360extern int drm_rmctx(struct drm_device *dev, void *data,
1361 struct drm_file *file_priv);
1362
1363extern int drm_ctxbitmap_init(struct drm_device *dev);
1364extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1365extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1366
1367extern int drm_setsareactx(struct drm_device *dev, void *data,
1368 struct drm_file *file_priv);
1369extern int drm_getsareactx(struct drm_device *dev, void *data,
1370 struct drm_file *file_priv);
1371
1372 /* Authentication IOCTL support (drm_auth.h) */
1373extern int drm_getmagic(struct drm_device *dev, void *data,
1374 struct drm_file *file_priv);
1375extern int drm_authmagic(struct drm_device *dev, void *data,
1376 struct drm_file *file_priv);
1377extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic);
1378
1379/* Cache management (drm_cache.c) */
1380void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1381void drm_clflush_virt_range(char *addr, unsigned long length);
1382
1383 /* Locking IOCTL support (drm_lock.h) */
1384extern int drm_lock(struct drm_device *dev, void *data,
1385 struct drm_file *file_priv);
1386extern int drm_unlock(struct drm_device *dev, void *data,
1387 struct drm_file *file_priv);
1388extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1389extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1390extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1391
1392/*
1393 * These are exported to drivers so that they can implement fencing using
1394 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1395 */
1396
1397extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1398
1399 /* Buffer management support (drm_bufs.h) */
1400extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1401extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1402extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1403 unsigned int size, enum drm_map_type type,
1404 enum drm_map_flags flags, struct drm_local_map **map_ptr);
1405extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1406 struct drm_file *file_priv);
1407extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1408extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1409extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1410 struct drm_file *file_priv);
1411extern int drm_addbufs(struct drm_device *dev, void *data,
1412 struct drm_file *file_priv);
1413extern int drm_infobufs(struct drm_device *dev, void *data,
1414 struct drm_file *file_priv);
1415extern int drm_markbufs(struct drm_device *dev, void *data,
1416 struct drm_file *file_priv);
1417extern int drm_freebufs(struct drm_device *dev, void *data,
1418 struct drm_file *file_priv);
1419extern int drm_mapbufs(struct drm_device *dev, void *data,
1420 struct drm_file *file_priv);
1421extern int drm_order(unsigned long size);
1422
1423 /* DMA support (drm_dma.h) */
1424extern int drm_dma_setup(struct drm_device *dev);
1425extern void drm_dma_takedown(struct drm_device *dev);
1426extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1427extern void drm_core_reclaim_buffers(struct drm_device *dev,
1428 struct drm_file *filp);
1429
1430 /* IRQ support (drm_irq.h) */
1431extern int drm_control(struct drm_device *dev, void *data,
1432 struct drm_file *file_priv);
1433extern int drm_irq_install(struct drm_device *dev);
1434extern int drm_irq_uninstall(struct drm_device *dev);
1435
1436extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1437extern int drm_wait_vblank(struct drm_device *dev, void *data,
1438 struct drm_file *filp);
1439extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1440extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1441extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1442 struct timeval *vblanktime);
1443extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1444extern int drm_vblank_get(struct drm_device *dev, int crtc);
1445extern void drm_vblank_put(struct drm_device *dev, int crtc);
1446extern void drm_vblank_off(struct drm_device *dev, int crtc);
1447extern void drm_vblank_cleanup(struct drm_device *dev);
1448extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1449 struct timeval *tvblank, unsigned flags);
1450extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1451 int crtc, int *max_error,
1452 struct timeval *vblank_time,
1453 unsigned flags,
1454 struct drm_crtc *refcrtc);
1455extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
1456
1457extern bool
1458drm_mode_parse_command_line_for_connector(const char *mode_option,
1459 struct drm_connector *connector,
1460 struct drm_cmdline_mode *mode);
1461
1462extern struct drm_display_mode *
1463drm_mode_create_from_cmdline_mode(struct drm_device *dev,
1464 struct drm_cmdline_mode *cmd);
1465
1466/* Modesetting support */
1467extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1468extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1469extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1470 struct drm_file *file_priv);
1471
1472 /* AGP/GART support (drm_agpsupport.h) */
1473extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1474extern int drm_agp_acquire(struct drm_device *dev);
1475extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1476 struct drm_file *file_priv);
1477extern int drm_agp_release(struct drm_device *dev);
1478extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1479 struct drm_file *file_priv);
1480extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1481extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1482 struct drm_file *file_priv);
1483extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1484extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1485 struct drm_file *file_priv);
1486extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1487extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1488 struct drm_file *file_priv);
1489extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1490extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1491 struct drm_file *file_priv);
1492extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1493extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1494 struct drm_file *file_priv);
1495extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1496extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1497 struct drm_file *file_priv);
1498
1499 /* Stub support (drm_stub.h) */
1500extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1501 struct drm_file *file_priv);
1502extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1503 struct drm_file *file_priv);
1504struct drm_master *drm_master_create(struct drm_minor *minor);
1505extern struct drm_master *drm_master_get(struct drm_master *master);
1506extern void drm_master_put(struct drm_master **master);
1507
1508extern void drm_put_dev(struct drm_device *dev);
1509extern int drm_put_minor(struct drm_minor **minor);
1510extern void drm_unplug_dev(struct drm_device *dev);
1511extern unsigned int drm_debug;
1512
1513extern unsigned int drm_vblank_offdelay;
1514extern unsigned int drm_timestamp_precision;
1515
1516extern struct class *drm_class;
1517extern struct proc_dir_entry *drm_proc_root;
1518extern struct dentry *drm_debugfs_root;
1519
1520extern struct idr drm_minors_idr;
1521
1522extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1523
1524 /* Proc support (drm_proc.h) */
1525extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1526 struct proc_dir_entry *root);
1527extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1528
1529 /* Debugfs support */
1530#if defined(CONFIG_DEBUG_FS)
1531extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1532 struct dentry *root);
1533extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1534 struct dentry *root, struct drm_minor *minor);
1535extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1536 struct drm_minor *minor);
1537extern int drm_debugfs_cleanup(struct drm_minor *minor);
1538#endif
1539
1540 /* Info file support */
1541extern int drm_name_info(struct seq_file *m, void *data);
1542extern int drm_vm_info(struct seq_file *m, void *data);
1543extern int drm_queues_info(struct seq_file *m, void *data);
1544extern int drm_bufs_info(struct seq_file *m, void *data);
1545extern int drm_vblank_info(struct seq_file *m, void *data);
1546extern int drm_clients_info(struct seq_file *m, void* data);
1547extern int drm_gem_name_info(struct seq_file *m, void *data);
1548
1549
1550extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
1551 struct drm_file *file_priv, uint32_t handle, uint32_t flags,
1552 int *prime_fd);
1553extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
1554 struct drm_file *file_priv, int prime_fd, uint32_t *handle);
1555
1556extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
1557 struct drm_file *file_priv);
1558extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data,
1559 struct drm_file *file_priv);
1560
1561extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
1562 dma_addr_t *addrs, int max_pages);
1563extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages);
1564extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
1565
1566
1567void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv);
1568void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv);
1569int drm_prime_add_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t handle);
1570int drm_prime_lookup_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t *handle);
1571void drm_prime_remove_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf);
1572
1573int drm_prime_add_dma_buf(struct drm_device *dev, struct drm_gem_object *obj);
1574int drm_prime_lookup_obj(struct drm_device *dev, struct dma_buf *buf,
1575 struct drm_gem_object **obj);
1576
1577#if DRM_DEBUG_CODE
1578extern int drm_vma_info(struct seq_file *m, void *data);
1579#endif
1580
1581 /* Scatter Gather Support (drm_scatter.h) */
1582extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1583extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1584 struct drm_file *file_priv);
1585extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1586extern int drm_sg_free(struct drm_device *dev, void *data,
1587 struct drm_file *file_priv);
1588
1589 /* ATI PCIGART support (ati_pcigart.h) */
1590extern int drm_ati_pcigart_init(struct drm_device *dev,
1591 struct drm_ati_pcigart_info * gart_info);
1592extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1593 struct drm_ati_pcigart_info * gart_info);
1594
1595extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1596 size_t align);
1597extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1598extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1599
1600 /* sysfs support (drm_sysfs.c) */
1601struct drm_sysfs_class;
1602extern struct class *drm_sysfs_create(struct module *owner, char *name);
1603extern void drm_sysfs_destroy(void);
1604extern int drm_sysfs_device_add(struct drm_minor *minor);
1605extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1606extern void drm_sysfs_device_remove(struct drm_minor *minor);
1607extern char *drm_get_connector_status_name(enum drm_connector_status status);
1608extern int drm_sysfs_connector_add(struct drm_connector *connector);
1609extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1610
1611/* Graphics Execution Manager library functions (drm_gem.c) */
1612int drm_gem_init(struct drm_device *dev);
1613void drm_gem_destroy(struct drm_device *dev);
1614void drm_gem_object_release(struct drm_gem_object *obj);
1615void drm_gem_object_free(struct kref *kref);
1616struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1617 size_t size);
1618int drm_gem_object_init(struct drm_device *dev,
1619 struct drm_gem_object *obj, size_t size);
1620int drm_gem_private_object_init(struct drm_device *dev,
1621 struct drm_gem_object *obj, size_t size);
1622void drm_gem_object_handle_free(struct drm_gem_object *obj);
1623void drm_gem_vm_open(struct vm_area_struct *vma);
1624void drm_gem_vm_close(struct vm_area_struct *vma);
1625int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1626
1627#include "drm_global.h"
1628
1629static inline void
1630drm_gem_object_reference(struct drm_gem_object *obj)
1631{
1632 kref_get(&obj->refcount);
1633}
1634
1635static inline void
1636drm_gem_object_unreference(struct drm_gem_object *obj)
1637{
1638 if (obj != NULL)
1639 kref_put(&obj->refcount, drm_gem_object_free);
1640}
1641
1642static inline void
1643drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1644{
1645 if (obj != NULL) {
1646 struct drm_device *dev = obj->dev;
1647 mutex_lock(&dev->struct_mutex);
1648 kref_put(&obj->refcount, drm_gem_object_free);
1649 mutex_unlock(&dev->struct_mutex);
1650 }
1651}
1652
1653int drm_gem_handle_create(struct drm_file *file_priv,
1654 struct drm_gem_object *obj,
1655 u32 *handlep);
1656int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
1657
1658static inline void
1659drm_gem_object_handle_reference(struct drm_gem_object *obj)
1660{
1661 drm_gem_object_reference(obj);
1662 atomic_inc(&obj->handle_count);
1663}
1664
1665static inline void
1666drm_gem_object_handle_unreference(struct drm_gem_object *obj)
1667{
1668 if (obj == NULL)
1669 return;
1670
1671 if (atomic_read(&obj->handle_count) == 0)
1672 return;
1673 /*
1674 * Must bump handle count first as this may be the last
1675 * ref, in which case the object would disappear before we
1676 * checked for a name
1677 */
1678 if (atomic_dec_and_test(&obj->handle_count))
1679 drm_gem_object_handle_free(obj);
1680 drm_gem_object_unreference(obj);
1681}
1682
1683static inline void
1684drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj)
1685{
1686 if (obj == NULL)
1687 return;
1688
1689 if (atomic_read(&obj->handle_count) == 0)
1690 return;
1691
1692 /*
1693 * Must bump handle count first as this may be the last
1694 * ref, in which case the object would disappear before we
1695 * checked for a name
1696 */
1697
1698 if (atomic_dec_and_test(&obj->handle_count))
1699 drm_gem_object_handle_free(obj);
1700 drm_gem_object_unreference_unlocked(obj);
1701}
1702
1703void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
1704int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
1705
1706struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1707 struct drm_file *filp,
1708 u32 handle);
1709int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1710 struct drm_file *file_priv);
1711int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1712 struct drm_file *file_priv);
1713int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1714 struct drm_file *file_priv);
1715void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1716void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1717
1718extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1719extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1720extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1721
1722static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1723 unsigned int token)
1724{
1725 struct drm_map_list *_entry;
1726 list_for_each_entry(_entry, &dev->maplist, head)
1727 if (_entry->user_token == token)
1728 return _entry->map;
1729 return NULL;
1730}
1731
1732static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1733{
1734}
1735
1736#include "drm_mem_util.h"
1737
1738extern int drm_fill_in_dev(struct drm_device *dev,
1739 const struct pci_device_id *ent,
1740 struct drm_driver *driver);
1741int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
1742/*@}*/
1743
1744/* PCI section */
1745static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1746{
1747 if (dev->driver->device_is_agp != NULL) {
1748 int err = (*dev->driver->device_is_agp) (dev);
1749
1750 if (err != 2) {
1751 return err;
1752 }
1753 }
1754
1755 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1756}
1757
1758extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1759extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1760extern int drm_get_pci_dev(struct pci_dev *pdev,
1761 const struct pci_device_id *ent,
1762 struct drm_driver *driver);
1763
1764
1765/* platform section */
1766extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1767extern void drm_platform_exit(struct drm_driver *driver, struct platform_device *platform_device);
1768
1769extern int drm_get_platform_dev(struct platform_device *pdev,
1770 struct drm_driver *driver);
1771
1772/* returns true if currently okay to sleep */
1773static __inline__ bool drm_can_sleep(void)
1774{
1775 if (in_atomic() || in_dbg_master() || irqs_disabled())
1776 return false;
1777 return true;
1778}
1779
1780#endif /* __KERNEL__ */
1781#endif