3
* Private header for Direct Rendering Manager
5
* \author Rickard E. (Rik) Faith <faith@valinux.com>
6
* \author Gareth Hughes <gareth@valinux.com>
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.
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:
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
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.
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>
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>
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 */
64
#include <asm/uaccess.h>
68
#if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
69
#include <linux/types.h>
70
#include <linux/agp_backend.h>
72
#include <linux/workqueue.h>
73
#include <linux/poll.h>
74
#include <asm/pgalloc.h>
77
#include <linux/idr.h>
79
#define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
80
#define __OS_HAS_MTRR (defined(CONFIG_MTRR))
87
#include "drm_os_linux.h"
88
#include "drm_hashtab.h"
91
#define DRM_UT_CORE 0x01
92
#define DRM_UT_DRIVER 0x02
93
#define DRM_UT_KMS 0x04
95
* Three debug levels are defined.
96
* drm_core, drm_driver, drm_kms
97
* drm_core level can be used in the generic drm code. For example:
98
* drm_ioctl, drm_mm, drm_memory
99
* The macro definition of DRM_DEBUG is used.
100
* DRM_DEBUG(fmt, args...)
101
* The debug info by using the DRM_DEBUG can be obtained by adding
102
* the boot option of "drm.debug=1".
104
* drm_driver level can be used in the specific drm driver. It is used
105
* to add the debug info related with the drm driver. For example:
106
* i915_drv, i915_dma, i915_gem, radeon_drv,
107
* The macro definition of DRM_DEBUG_DRIVER can be used.
108
* DRM_DEBUG_DRIVER(fmt, args...)
109
* The debug info by using the DRM_DEBUG_DRIVER can be obtained by
110
* adding the boot option of "drm.debug=0x02"
112
* drm_kms level can be used in the KMS code related with specific drm driver.
113
* It is used to add the debug info related with KMS mode. For example:
114
* the connector/crtc ,
115
* The macro definition of DRM_DEBUG_KMS can be used.
116
* DRM_DEBUG_KMS(fmt, args...)
117
* The debug info by using the DRM_DEBUG_KMS can be obtained by
118
* adding the boot option of "drm.debug=0x04"
120
* If we add the boot option of "drm.debug=0x06", we can get the debug info by
121
* using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
122
* If we add the boot option of "drm.debug=0x05", we can get the debug info by
123
* using the DRM_DEBUG_KMS and DRM_DEBUG.
126
extern __printf(4, 5)
127
void drm_ut_debug_printk(unsigned int request_level,
129
const char *function_name,
130
const char *format, ...);
131
extern __printf(2, 3)
132
int drm_err(const char *func, const char *format, ...);
134
/***********************************************************************/
135
/** \name DRM template customization defaults */
138
/* driver capabilities and requirements mask */
139
#define DRIVER_USE_AGP 0x1
140
#define DRIVER_REQUIRE_AGP 0x2
141
#define DRIVER_USE_MTRR 0x4
142
#define DRIVER_PCI_DMA 0x8
143
#define DRIVER_SG 0x10
144
#define DRIVER_HAVE_DMA 0x20
145
#define DRIVER_HAVE_IRQ 0x40
146
#define DRIVER_IRQ_SHARED 0x80
147
#define DRIVER_IRQ_VBL 0x100
148
#define DRIVER_DMA_QUEUE 0x200
149
#define DRIVER_FB_DMA 0x400
150
#define DRIVER_IRQ_VBL2 0x800
151
#define DRIVER_GEM 0x1000
152
#define DRIVER_MODESET 0x2000
154
#define DRIVER_BUS_PCI 0x1
155
#define DRIVER_BUS_PLATFORM 0x2
156
#define DRIVER_BUS_USB 0x3
158
/***********************************************************************/
159
/** \name Begin the DRM... */
162
#define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
163
also include looping detection. */
165
#define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
166
#define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
167
#define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
168
#define DRM_LOOPING_LIMIT 5000000
169
#define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
170
#define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
172
#define DRM_FLAG_DEBUG 0x01
174
#define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
175
#define DRM_MAP_HASH_OFFSET 0x10000000
179
/***********************************************************************/
180
/** \name Macros to make printk easier */
186
* \param fmt printf() like format string.
187
* \param arg arguments
189
#define DRM_ERROR(fmt, ...) \
190
drm_err(__func__, fmt, ##__VA_ARGS__)
192
#define DRM_INFO(fmt, ...) \
193
printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
198
* \param fmt printf() like format string.
199
* \param arg arguments
202
#define DRM_DEBUG(fmt, args...) \
204
drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
205
__func__, fmt, ##args); \
208
#define DRM_DEBUG_DRIVER(fmt, args...) \
210
drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
211
__func__, fmt, ##args); \
213
#define DRM_DEBUG_KMS(fmt, args...) \
215
drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
216
__func__, fmt, ##args); \
218
#define DRM_LOG(fmt, args...) \
220
drm_ut_debug_printk(DRM_UT_CORE, NULL, \
221
NULL, fmt, ##args); \
223
#define DRM_LOG_KMS(fmt, args...) \
225
drm_ut_debug_printk(DRM_UT_KMS, NULL, \
226
NULL, fmt, ##args); \
228
#define DRM_LOG_MODE(fmt, args...) \
230
drm_ut_debug_printk(DRM_UT_MODE, NULL, \
231
NULL, fmt, ##args); \
233
#define DRM_LOG_DRIVER(fmt, args...) \
235
drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
236
NULL, fmt, ##args); \
239
#define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
240
#define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
241
#define DRM_DEBUG(fmt, arg...) do { } while (0)
242
#define DRM_LOG(fmt, arg...) do { } while (0)
243
#define DRM_LOG_KMS(fmt, args...) do { } while (0)
244
#define DRM_LOG_MODE(fmt, arg...) do { } while (0)
245
#define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
251
/***********************************************************************/
252
/** \name Internal types and structures */
255
#define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
257
#define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
258
#define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
260
#define DRM_IF_VERSION(maj, min) (maj << 16 | min)
263
* Test that the hardware lock is held by the caller, returning otherwise.
265
* \param dev DRM device.
266
* \param filp file pointer of the caller.
268
#define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
270
if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
271
_file_priv->master->lock.file_priv != _file_priv) { \
272
DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
273
__func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
274
_file_priv->master->lock.file_priv, _file_priv); \
280
* Ioctl function type.
282
* \param inode device inode.
283
* \param file_priv DRM file private pointer.
284
* \param cmd command.
285
* \param arg argument.
287
typedef int drm_ioctl_t(struct drm_device *dev, void *data,
288
struct drm_file *file_priv);
290
typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
293
#define DRM_IOCTL_NR(n) _IOC_NR(n)
294
#define DRM_MAJOR 226
297
#define DRM_MASTER 0x2
298
#define DRM_ROOT_ONLY 0x4
299
#define DRM_CONTROL_ALLOW 0x8
300
#define DRM_UNLOCKED 0x10
302
struct drm_ioctl_desc {
306
unsigned int cmd_drv;
310
* Creates a driver or general drm_ioctl_desc array entry for the given
311
* ioctl, for use by drm_ioctl().
314
#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
315
[DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl}
317
struct drm_magic_entry {
318
struct list_head head;
319
struct drm_hash_item hash_item;
320
struct drm_file *priv;
323
struct drm_vma_entry {
324
struct list_head head;
325
struct vm_area_struct *vma;
333
int idx; /**< Index into master buflist */
334
int total; /**< Buffer size */
335
int order; /**< log-base-2(total) */
336
int used; /**< Amount of buffer in use (for DMA) */
337
unsigned long offset; /**< Byte offset (used internally) */
338
void *address; /**< Address of buffer */
339
unsigned long bus_address; /**< Bus address of buffer */
340
struct drm_buf *next; /**< Kernel-only: used for free list */
341
__volatile__ int waiting; /**< On kernel DMA queue */
342
__volatile__ int pending; /**< On hardware DMA queue */
343
wait_queue_head_t dma_wait; /**< Processes waiting */
344
struct drm_file *file_priv; /**< Private of holding file descr */
345
int context; /**< Kernel queue for this buffer */
346
int while_locked; /**< Dispatch this buffer while locked */
354
} list; /**< Which list we're on */
356
int dev_priv_size; /**< Size of buffer private storage */
357
void *dev_private; /**< Per-buffer private storage */
360
/** bufs is one longer than it has to be */
361
struct drm_waitlist {
362
int count; /**< Number of possible buffers */
363
struct drm_buf **bufs; /**< List of pointers to buffers */
364
struct drm_buf **rp; /**< Read pointer */
365
struct drm_buf **wp; /**< Write pointer */
366
struct drm_buf **end; /**< End pointer */
367
spinlock_t read_lock;
368
spinlock_t write_lock;
371
struct drm_freelist {
372
int initialized; /**< Freelist in use */
373
atomic_t count; /**< Number of free buffers */
374
struct drm_buf *next; /**< End pointer */
376
wait_queue_head_t waiting; /**< Processes waiting on free bufs */
377
int low_mark; /**< Low water mark */
378
int high_mark; /**< High water mark */
379
atomic_t wfh; /**< If waiting for high mark */
383
typedef struct drm_dma_handle {
390
* Buffer entry. There is one of this for each buffer size order.
392
struct drm_buf_entry {
393
int buf_size; /**< size */
394
int buf_count; /**< number of buffers */
395
struct drm_buf *buflist; /**< buffer list */
398
struct drm_dma_handle **seglist;
400
struct drm_freelist freelist;
403
/* Event queued up for userspace to read */
404
struct drm_pending_event {
405
struct drm_event *event;
406
struct list_head link;
407
struct drm_file *file_priv;
408
pid_t pid; /* pid of requester, no guarantee it's valid by the time
409
we deliver the event, for tracing only */
410
void (*destroy)(struct drm_pending_event *event);
413
/** File private data */
419
unsigned long ioctl_count;
420
struct list_head lhead;
421
struct drm_minor *minor;
422
unsigned long lock_count;
424
/** Mapping of mm object handles to object pointers. */
425
struct idr object_idr;
426
/** Lock for synchronization of access to object_idr. */
427
spinlock_t table_lock;
432
int is_master; /* this file private is a master for a minor */
433
struct drm_master *master; /* master this node is currently associated with
434
N.B. not always minor->master */
435
struct list_head fbs;
437
wait_queue_head_t event_wait;
438
struct list_head event_list;
444
atomic_t use_count; /**< Outstanding uses (+1) */
445
atomic_t finalization; /**< Finalization in progress */
446
atomic_t block_count; /**< Count of processes waiting */
447
atomic_t block_read; /**< Queue blocked for reads */
448
wait_queue_head_t read_queue; /**< Processes waiting on block_read */
449
atomic_t block_write; /**< Queue blocked for writes */
450
wait_queue_head_t write_queue; /**< Processes waiting on block_write */
451
atomic_t total_queued; /**< Total queued statistic */
452
atomic_t total_flushed; /**< Total flushes statistic */
453
atomic_t total_locks; /**< Total locks statistics */
454
enum drm_ctx_flags flags; /**< Context preserving and 2D-only */
455
struct drm_waitlist waitlist; /**< Pending buffers */
456
wait_queue_head_t flush_queue; /**< Processes waiting until flush */
462
struct drm_lock_data {
463
struct drm_hw_lock *hw_lock; /**< Hardware lock */
464
/** Private of lock holder's file (NULL=kernel) */
465
struct drm_file *file_priv;
466
wait_queue_head_t lock_queue; /**< Queue of blocked processes */
467
unsigned long lock_time; /**< Time of last lock in jiffies */
469
uint32_t kernel_waiters;
470
uint32_t user_waiters;
477
struct drm_device_dma {
479
struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
480
int buf_count; /**< total number of buffers */
481
struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
483
int page_count; /**< number of pages */
484
unsigned long *pagelist; /**< page list */
485
unsigned long byte_count;
487
_DRM_DMA_USE_AGP = 0x01,
488
_DRM_DMA_USE_SG = 0x02,
489
_DRM_DMA_USE_FB = 0x04,
490
_DRM_DMA_USE_PCI_RO = 0x08
496
* AGP memory entry. Stored as a doubly linked list.
499
unsigned long handle; /**< handle */
501
unsigned long bound; /**< address */
503
struct list_head head;
509
* \sa drm_agp_init() and drm_device::agp.
511
struct drm_agp_head {
512
DRM_AGP_KERN agp_info; /**< AGP device information */
513
struct list_head memory;
514
unsigned long mode; /**< AGP mode */
515
struct agp_bridge_data *bridge;
516
int enabled; /**< whether the AGP bus as been enabled */
517
int acquired; /**< whether the AGP device has been acquired */
520
int cant_use_aperture;
521
unsigned long page_mask;
525
* Scatter-gather memory.
528
unsigned long handle;
531
struct page **pagelist;
537
struct drm_hw_lock *lock;
542
* Kernel side of a mapping
544
struct drm_local_map {
545
resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
546
unsigned long size; /**< Requested physical size (bytes) */
547
enum drm_map_type type; /**< Type of memory to map */
548
enum drm_map_flags flags; /**< Flags */
549
void *handle; /**< User-space: "Handle" to pass to mmap() */
550
/**< Kernel-space: kernel-virtual address */
551
int mtrr; /**< MTRR slot used */
554
typedef struct drm_local_map drm_local_map_t;
559
struct drm_map_list {
560
struct list_head head; /**< list head */
561
struct drm_hash_item hash;
562
struct drm_local_map *map; /**< mapping */
564
struct drm_master *master;
565
struct drm_mm_node *file_offset_node; /**< fake offset */
569
* Context handle list
571
struct drm_ctx_list {
572
struct list_head head; /**< list head */
573
drm_context_t handle; /**< context handle */
574
struct drm_file *tag; /**< associated fd private data */
577
/* location of GART table */
578
#define DRM_ATI_GART_MAIN 1
579
#define DRM_ATI_GART_FB 2
581
#define DRM_ATI_GART_PCI 1
582
#define DRM_ATI_GART_PCIE 2
583
#define DRM_ATI_GART_IGP 3
585
struct drm_ati_pcigart_info {
586
int gart_table_location;
590
dma_addr_t table_mask;
591
struct drm_dma_handle *table_handle;
592
struct drm_local_map mapping;
597
* GEM specific mm private for tracking GEM objects
600
struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */
601
struct drm_open_hash offset_hash; /**< User token hash table for maps */
605
* This structure defines the drm_mm memory object, which will be used by the
606
* DRM for its buffer objects.
608
struct drm_gem_object {
609
/** Reference count of this object */
610
struct kref refcount;
612
/** Handle count of this object. Each handle also holds a reference */
613
atomic_t handle_count; /* number of handles on this object */
615
/** Related drm device */
616
struct drm_device *dev;
618
/** File representing the shmem storage */
621
/* Mapping info for this object */
622
struct drm_map_list map_list;
625
* Size of the object, in bytes. Immutable over the object's
631
* Global name for this object, starts at 1. 0 means unnamed.
632
* Access is covered by the object_name_lock in the related drm_device
637
* Memory domains. These monitor which caches contain read/write data
638
* related to the object. When transitioning from one set of domains
639
* to another, the driver is called to ensure that caches are suitably
640
* flushed and invalidated
642
uint32_t read_domains;
643
uint32_t write_domain;
646
* While validating an exec operation, the
647
* new read/write domain values are computed here.
648
* They will be transferred to the above values
649
* at the point that any cache flushing occurs
651
uint32_t pending_read_domains;
652
uint32_t pending_write_domain;
654
void *driver_private;
657
#include "drm_crtc.h"
659
/* per-master structure */
662
struct kref refcount; /* refcount for this master */
664
struct list_head head; /**< each minor contains a list of masters */
665
struct drm_minor *minor; /**< link back to minor we are a master for */
667
char *unique; /**< Unique identifier: e.g., busid */
668
int unique_len; /**< Length of unique field */
669
int unique_size; /**< amount allocated */
671
int blocked; /**< Blocked due to VC switch? */
673
/** \name Authentication */
675
struct drm_open_hash magiclist;
676
struct list_head magicfree;
679
struct drm_lock_data lock; /**< Information on hardware lock */
681
void *driver_priv; /**< Private structure for driver to use */
684
/* Size of ringbuffer for vblank timestamps. Just double-buffer
685
* in initial implementation.
687
#define DRM_VBLANKTIME_RBSIZE 2
689
/* Flags and return codes for get_vblank_timestamp() driver function. */
690
#define DRM_CALLED_FROM_VBLIRQ 1
691
#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
692
#define DRM_VBLANKTIME_INVBL (1 << 1)
694
/* get_scanout_position() return flags */
695
#define DRM_SCANOUTPOS_VALID (1 << 0)
696
#define DRM_SCANOUTPOS_INVBL (1 << 1)
697
#define DRM_SCANOUTPOS_ACCURATE (1 << 2)
701
int (*get_irq)(struct drm_device *dev);
702
const char *(*get_name)(struct drm_device *dev);
703
int (*set_busid)(struct drm_device *dev, struct drm_master *master);
704
int (*set_unique)(struct drm_device *dev, struct drm_master *master,
705
struct drm_unique *unique);
706
int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
707
/* hooks that are for PCI */
708
int (*agp_init)(struct drm_device *dev);
713
* DRM driver structure. This structure represent the common code for
714
* a family of cards. There will one drm_device for each card present
718
int (*load) (struct drm_device *, unsigned long flags);
719
int (*firstopen) (struct drm_device *);
720
int (*open) (struct drm_device *, struct drm_file *);
721
void (*preclose) (struct drm_device *, struct drm_file *file_priv);
722
void (*postclose) (struct drm_device *, struct drm_file *);
723
void (*lastclose) (struct drm_device *);
724
int (*unload) (struct drm_device *);
725
int (*suspend) (struct drm_device *, pm_message_t state);
726
int (*resume) (struct drm_device *);
727
int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
728
int (*dma_quiescent) (struct drm_device *);
729
int (*context_dtor) (struct drm_device *dev, int context);
732
* get_vblank_counter - get raw hardware vblank counter
734
* @crtc: counter to fetch
736
* Driver callback for fetching a raw hardware vblank counter
737
* for @crtc. If a device doesn't have a hardware counter, the
738
* driver can simply return the value of drm_vblank_count and
739
* make the enable_vblank() and disable_vblank() hooks into no-ops,
740
* leaving interrupts enabled at all times.
742
* Wraparound handling and loss of events due to modesetting is dealt
743
* with in the DRM core code.
746
* Raw vblank counter value.
748
u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
751
* enable_vblank - enable vblank interrupt events
753
* @crtc: which irq to enable
755
* Enable vblank interrupts for @crtc. If the device doesn't have
756
* a hardware vblank counter, this routine should be a no-op, since
757
* interrupts will have to stay on to keep the count accurate.
760
* Zero on success, appropriate errno if the given @crtc's vblank
761
* interrupt cannot be enabled.
763
int (*enable_vblank) (struct drm_device *dev, int crtc);
766
* disable_vblank - disable vblank interrupt events
768
* @crtc: which irq to enable
770
* Disable vblank interrupts for @crtc. If the device doesn't have
771
* a hardware vblank counter, this routine should be a no-op, since
772
* interrupts will have to stay on to keep the count accurate.
774
void (*disable_vblank) (struct drm_device *dev, int crtc);
777
* Called by \c drm_device_is_agp. Typically used to determine if a
778
* card is really attached to AGP or not.
780
* \param dev DRM device handle
783
* One of three values is returned depending on whether or not the
784
* card is absolutely \b not AGP (return of 0), absolutely \b is AGP
785
* (return of 1), or may or may not be AGP (return of 2).
787
int (*device_is_agp) (struct drm_device *dev);
790
* Called by vblank timestamping code.
792
* Return the current display scanout position from a crtc.
794
* \param dev DRM device.
795
* \param crtc Id of the crtc to query.
796
* \param *vpos Target location for current vertical scanout position.
797
* \param *hpos Target location for current horizontal scanout position.
799
* Returns vpos as a positive number while in active scanout area.
800
* Returns vpos as a negative number inside vblank, counting the number
801
* of scanlines to go until end of vblank, e.g., -1 means "one scanline
802
* until start of active scanout / end of vblank."
804
* \return Flags, or'ed together as follows:
806
* DRM_SCANOUTPOS_VALID = Query successful.
807
* DRM_SCANOUTPOS_INVBL = Inside vblank.
808
* DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
809
* this flag means that returned position may be offset by a constant
810
* but unknown small number of scanlines wrt. real scanout position.
813
int (*get_scanout_position) (struct drm_device *dev, int crtc,
814
int *vpos, int *hpos);
817
* Called by \c drm_get_last_vbltimestamp. Should return a precise
818
* timestamp when the most recent VBLANK interval ended or will end.
820
* Specifically, the timestamp in @vblank_time should correspond as
821
* closely as possible to the time when the first video scanline of
822
* the video frame after the end of VBLANK will start scanning out,
823
* the time immmediately after end of the VBLANK interval. If the
824
* @crtc is currently inside VBLANK, this will be a time in the future.
825
* If the @crtc is currently scanning out a frame, this will be the
826
* past start time of the current scanout. This is meant to adhere
827
* to the OpenML OML_sync_control extension specification.
829
* \param dev dev DRM device handle.
830
* \param crtc crtc for which timestamp should be returned.
831
* \param *max_error Maximum allowable timestamp error in nanoseconds.
832
* Implementation should strive to provide timestamp
833
* with an error of at most *max_error nanoseconds.
834
* Returns true upper bound on error for timestamp.
835
* \param *vblank_time Target location for returned vblank timestamp.
836
* \param flags 0 = Defaults, no special treatment needed.
837
* \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
838
* irq handler. Some drivers need to apply some workarounds
839
* for gpu-specific vblank irq quirks if flag is set.
842
* Zero if timestamping isn't supported in current display mode or a
843
* negative number on failure. A positive status code on success,
844
* which describes how the vblank_time timestamp was computed.
846
int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
848
struct timeval *vblank_time,
851
/* these have to be filled in */
853
irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
854
void (*irq_preinstall) (struct drm_device *dev);
855
int (*irq_postinstall) (struct drm_device *dev);
856
void (*irq_uninstall) (struct drm_device *dev);
857
void (*reclaim_buffers) (struct drm_device *dev,
858
struct drm_file * file_priv);
859
void (*reclaim_buffers_locked) (struct drm_device *dev,
860
struct drm_file *file_priv);
861
void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
862
struct drm_file *file_priv);
863
void (*set_version) (struct drm_device *dev,
864
struct drm_set_version *sv);
866
/* Master routines */
867
int (*master_create)(struct drm_device *dev, struct drm_master *master);
868
void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
870
* master_set is called whenever the minor master is set.
871
* master_drop is called whenever the minor master is dropped.
874
int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
876
void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
879
int (*debugfs_init)(struct drm_minor *minor);
880
void (*debugfs_cleanup)(struct drm_minor *minor);
883
* Driver-specific constructor for drm_gem_objects, to set up
884
* obj->driver_private.
886
* Returns 0 on success.
888
int (*gem_init_object) (struct drm_gem_object *obj);
889
void (*gem_free_object) (struct drm_gem_object *obj);
890
int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
891
void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
893
/* vga arb irq handler */
894
void (*vgaarb_irq)(struct drm_device *dev, bool state);
896
/* dumb alloc support */
897
int (*dumb_create)(struct drm_file *file_priv,
898
struct drm_device *dev,
899
struct drm_mode_create_dumb *args);
900
int (*dumb_map_offset)(struct drm_file *file_priv,
901
struct drm_device *dev, uint32_t handle,
903
int (*dumb_destroy)(struct drm_file *file_priv,
904
struct drm_device *dev,
907
/* Driver private ops for this object */
908
struct vm_operations_struct *gem_vm_ops;
919
struct drm_ioctl_desc *ioctls;
921
struct file_operations fops;
923
struct pci_driver *pci;
924
struct platform_device *platform_device;
925
struct usb_driver *usb;
929
/* List of devices hanging off this driver */
930
struct list_head device_list;
933
#define DRM_MINOR_UNASSIGNED 0
934
#define DRM_MINOR_LEGACY 1
935
#define DRM_MINOR_CONTROL 2
936
#define DRM_MINOR_RENDER 3
940
* debugfs node list. This structure represents a debugfs file to
941
* be created by the drm core
943
struct drm_debugfs_list {
944
const char *name; /** file name */
945
int (*show)(struct seq_file*, void*); /** show callback */
946
u32 driver_features; /**< Required driver features for this entry */
950
* debugfs node structure. This structure represents a debugfs file.
952
struct drm_debugfs_node {
953
struct list_head list;
954
struct drm_minor *minor;
955
struct drm_debugfs_list *debugfs_ent;
960
* Info file list entry. This structure represents a debugfs or proc file to
961
* be created by the drm core
963
struct drm_info_list {
964
const char *name; /** file name */
965
int (*show)(struct seq_file*, void*); /** show callback */
966
u32 driver_features; /**< Required driver features for this entry */
971
* debugfs node structure. This structure represents a debugfs file.
973
struct drm_info_node {
974
struct list_head list;
975
struct drm_minor *minor;
976
struct drm_info_list *info_ent;
981
* DRM minor structure. This structure represents a drm minor number.
984
int index; /**< Minor device number */
985
int type; /**< Control or render */
986
dev_t device; /**< Device number for mknod */
987
struct device kdev; /**< Linux device */
988
struct drm_device *dev;
990
struct proc_dir_entry *proc_root; /**< proc directory entry */
991
struct drm_info_node proc_nodes;
992
struct dentry *debugfs_root;
994
struct list_head debugfs_list;
995
struct mutex debugfs_lock; /* Protects debugfs_list. */
997
struct drm_master *master; /* currently active master for this node */
998
struct list_head master_list;
999
struct drm_mode_group mode_group;
1002
/* mode specified on the command line */
1003
struct drm_cmdline_mode {
1005
bool refresh_specified;
1014
enum drm_connector_force force;
1018
struct drm_pending_vblank_event {
1019
struct drm_pending_event base;
1021
struct drm_event_vblank event;
1025
* DRM device structure. This structure represent a complete card that
1026
* may contain multiple heads.
1029
struct list_head driver_item; /**< list of devices per driver */
1030
char *devname; /**< For /proc/interrupts */
1031
int if_version; /**< Highest interface version set */
1035
spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1036
struct mutex struct_mutex; /**< For others */
1039
/** \name Usage Counters */
1041
int open_count; /**< Outstanding files open */
1042
atomic_t ioctl_count; /**< Outstanding IOCTLs pending */
1043
atomic_t vma_count; /**< Outstanding vma areas open */
1044
int buf_use; /**< Buffers in use -- cannot alloc */
1045
atomic_t buf_alloc; /**< Buffer allocation in progress */
1048
/** \name Performance counters */
1050
unsigned long counters;
1051
enum drm_stat_type types[15];
1052
atomic_t counts[15];
1055
struct list_head filelist;
1057
/** \name Memory management */
1059
struct list_head maplist; /**< Linked list of regions */
1060
int map_count; /**< Number of mappable regions */
1061
struct drm_open_hash map_hash; /**< User token hash table for maps */
1063
/** \name Context handle management */
1065
struct list_head ctxlist; /**< Linked list of context handles */
1066
int ctx_count; /**< Number of context handles */
1067
struct mutex ctxlist_mutex; /**< For ctxlist */
1071
struct list_head vmalist; /**< List of vmas (for debugging) */
1075
/** \name DMA queues (contexts) */
1077
int queue_count; /**< Number of active DMA queues */
1078
int queue_reserved; /**< Number of reserved DMA queues */
1079
int queue_slots; /**< Actual length of queuelist */
1080
struct drm_queue **queuelist; /**< Vector of pointers to DMA queues */
1081
struct drm_device_dma *dma; /**< Optional pointer for DMA support */
1084
/** \name Context support */
1086
int irq_enabled; /**< True if irq handler is enabled */
1087
__volatile__ long context_flag; /**< Context swapping flag */
1088
__volatile__ long interrupt_flag; /**< Interruption handler flag */
1089
__volatile__ long dma_flag; /**< DMA dispatch flag */
1090
wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
1091
int last_checked; /**< Last context checked for DMA */
1092
int last_context; /**< Last current context */
1093
unsigned long last_switch; /**< jiffies at last context switch */
1096
struct work_struct work;
1097
/** \name VBLANK IRQ support */
1101
* At load time, disabling the vblank interrupt won't be allowed since
1102
* old clients may not call the modeset ioctl and therefore misbehave.
1103
* Once the modeset ioctl *has* been called though, we can safely
1104
* disable them when unused.
1106
int vblank_disable_allowed;
1108
wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */
1109
atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1110
struct timeval *_vblank_time; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1111
spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
1112
spinlock_t vbl_lock;
1113
atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */
1114
u32 *last_vblank; /* protected by dev->vbl_lock, used */
1115
/* for wraparound handling */
1116
int *vblank_enabled; /* so we don't call enable more than
1118
int *vblank_inmodeset; /* Display driver is setting mode */
1119
u32 *last_vblank_wait; /* Last vblank seqno waited per CRTC */
1120
struct timer_list vblank_disable_timer;
1122
u32 max_vblank_count; /**< size of vblank counter register */
1127
struct list_head vblank_event_list;
1128
spinlock_t event_lock;
1134
struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
1135
wait_queue_head_t buf_readers; /**< Processes waiting to read */
1136
wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */
1138
struct drm_agp_head *agp; /**< AGP data */
1140
struct device *dev; /**< Device structure */
1141
struct pci_dev *pdev; /**< PCI device structure */
1142
int pci_vendor; /**< PCI vendor id */
1143
int pci_device; /**< PCI device id */
1145
struct pci_controller *hose;
1148
struct platform_device *platformdev; /**< Platform device struture */
1149
struct usb_device *usbdev;
1151
struct drm_sg_mem *sg; /**< Scatter gather memory */
1152
unsigned int num_crtcs; /**< Number of CRTCs on this device */
1153
void *dev_private; /**< device private data */
1155
struct address_space *dev_mapping;
1156
struct drm_sigdata sigdata; /**< For block_all_signals */
1159
struct drm_driver *driver;
1160
struct drm_local_map *agp_buffer_map;
1161
unsigned int agp_buffer_token;
1162
struct drm_minor *control; /**< Control node for card */
1163
struct drm_minor *primary; /**< render type primary screen head */
1165
struct drm_mode_config mode_config; /**< Current mode config */
1167
/** \name GEM information */
1169
spinlock_t object_name_lock;
1170
struct idr object_name_idr;
1172
int switch_power_state;
1175
#define DRM_SWITCH_POWER_ON 0
1176
#define DRM_SWITCH_POWER_OFF 1
1177
#define DRM_SWITCH_POWER_CHANGING 2
1179
static __inline__ int drm_core_check_feature(struct drm_device *dev,
1182
return ((dev->driver->driver_features & feature) ? 1 : 0);
1185
static inline int drm_dev_to_irq(struct drm_device *dev)
1187
return dev->driver->bus->get_irq(dev);
1192
static inline int drm_core_has_AGP(struct drm_device *dev)
1194
return drm_core_check_feature(dev, DRIVER_USE_AGP);
1197
#define drm_core_has_AGP(dev) (0)
1201
static inline int drm_core_has_MTRR(struct drm_device *dev)
1203
return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1206
#define DRM_MTRR_WC MTRR_TYPE_WRCOMB
1208
static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1211
return mtrr_add(offset, size, flags, 1);
1214
static inline int drm_mtrr_del(int handle, unsigned long offset,
1215
unsigned long size, unsigned int flags)
1217
return mtrr_del(handle, offset, size);
1221
#define drm_core_has_MTRR(dev) (0)
1223
#define DRM_MTRR_WC 0
1225
static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1231
static inline int drm_mtrr_del(int handle, unsigned long offset,
1232
unsigned long size, unsigned int flags)
1238
/******************************************************************/
1239
/** \name Internal function definitions */
1242
/* Driver support (drm_drv.h) */
1243
extern long drm_ioctl(struct file *filp,
1244
unsigned int cmd, unsigned long arg);
1245
extern long drm_compat_ioctl(struct file *filp,
1246
unsigned int cmd, unsigned long arg);
1247
extern int drm_lastclose(struct drm_device *dev);
1249
/* Device support (drm_fops.h) */
1250
extern struct mutex drm_global_mutex;
1251
extern int drm_open(struct inode *inode, struct file *filp);
1252
extern int drm_stub_open(struct inode *inode, struct file *filp);
1253
extern int drm_fasync(int fd, struct file *filp, int on);
1254
extern ssize_t drm_read(struct file *filp, char __user *buffer,
1255
size_t count, loff_t *offset);
1256
extern int drm_release(struct inode *inode, struct file *filp);
1258
/* Mapping support (drm_vm.h) */
1259
extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1260
extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1261
extern void drm_vm_open_locked(struct vm_area_struct *vma);
1262
extern void drm_vm_close_locked(struct vm_area_struct *vma);
1263
extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1265
/* Memory management support (drm_memory.h) */
1266
#include "drm_memory.h"
1267
extern void drm_mem_init(void);
1268
extern int drm_mem_info(char *buf, char **start, off_t offset,
1269
int request, int *eof, void *data);
1270
extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
1272
extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
1273
extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
1274
extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
1275
struct page **pages,
1276
unsigned long num_pages,
1277
uint32_t gtt_offset,
1279
extern int drm_unbind_agp(DRM_AGP_MEM * handle);
1281
/* Misc. IOCTL support (drm_ioctl.h) */
1282
extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1283
struct drm_file *file_priv);
1284
extern int drm_getunique(struct drm_device *dev, void *data,
1285
struct drm_file *file_priv);
1286
extern int drm_setunique(struct drm_device *dev, void *data,
1287
struct drm_file *file_priv);
1288
extern int drm_getmap(struct drm_device *dev, void *data,
1289
struct drm_file *file_priv);
1290
extern int drm_getclient(struct drm_device *dev, void *data,
1291
struct drm_file *file_priv);
1292
extern int drm_getstats(struct drm_device *dev, void *data,
1293
struct drm_file *file_priv);
1294
extern int drm_getcap(struct drm_device *dev, void *data,
1295
struct drm_file *file_priv);
1296
extern int drm_setversion(struct drm_device *dev, void *data,
1297
struct drm_file *file_priv);
1298
extern int drm_noop(struct drm_device *dev, void *data,
1299
struct drm_file *file_priv);
1301
/* Context IOCTL support (drm_context.h) */
1302
extern int drm_resctx(struct drm_device *dev, void *data,
1303
struct drm_file *file_priv);
1304
extern int drm_addctx(struct drm_device *dev, void *data,
1305
struct drm_file *file_priv);
1306
extern int drm_modctx(struct drm_device *dev, void *data,
1307
struct drm_file *file_priv);
1308
extern int drm_getctx(struct drm_device *dev, void *data,
1309
struct drm_file *file_priv);
1310
extern int drm_switchctx(struct drm_device *dev, void *data,
1311
struct drm_file *file_priv);
1312
extern int drm_newctx(struct drm_device *dev, void *data,
1313
struct drm_file *file_priv);
1314
extern int drm_rmctx(struct drm_device *dev, void *data,
1315
struct drm_file *file_priv);
1317
extern int drm_ctxbitmap_init(struct drm_device *dev);
1318
extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1319
extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1321
extern int drm_setsareactx(struct drm_device *dev, void *data,
1322
struct drm_file *file_priv);
1323
extern int drm_getsareactx(struct drm_device *dev, void *data,
1324
struct drm_file *file_priv);
1326
/* Authentication IOCTL support (drm_auth.h) */
1327
extern int drm_getmagic(struct drm_device *dev, void *data,
1328
struct drm_file *file_priv);
1329
extern int drm_authmagic(struct drm_device *dev, void *data,
1330
struct drm_file *file_priv);
1332
/* Cache management (drm_cache.c) */
1333
void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1335
/* Locking IOCTL support (drm_lock.h) */
1336
extern int drm_lock(struct drm_device *dev, void *data,
1337
struct drm_file *file_priv);
1338
extern int drm_unlock(struct drm_device *dev, void *data,
1339
struct drm_file *file_priv);
1340
extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1341
extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1342
extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1345
* These are exported to drivers so that they can implement fencing using
1346
* DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1349
extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1351
/* Buffer management support (drm_bufs.h) */
1352
extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1353
extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1354
extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1355
unsigned int size, enum drm_map_type type,
1356
enum drm_map_flags flags, struct drm_local_map **map_ptr);
1357
extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1358
struct drm_file *file_priv);
1359
extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1360
extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1361
extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1362
struct drm_file *file_priv);
1363
extern int drm_addbufs(struct drm_device *dev, void *data,
1364
struct drm_file *file_priv);
1365
extern int drm_infobufs(struct drm_device *dev, void *data,
1366
struct drm_file *file_priv);
1367
extern int drm_markbufs(struct drm_device *dev, void *data,
1368
struct drm_file *file_priv);
1369
extern int drm_freebufs(struct drm_device *dev, void *data,
1370
struct drm_file *file_priv);
1371
extern int drm_mapbufs(struct drm_device *dev, void *data,
1372
struct drm_file *file_priv);
1373
extern int drm_order(unsigned long size);
1375
/* DMA support (drm_dma.h) */
1376
extern int drm_dma_setup(struct drm_device *dev);
1377
extern void drm_dma_takedown(struct drm_device *dev);
1378
extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1379
extern void drm_core_reclaim_buffers(struct drm_device *dev,
1380
struct drm_file *filp);
1382
/* IRQ support (drm_irq.h) */
1383
extern int drm_control(struct drm_device *dev, void *data,
1384
struct drm_file *file_priv);
1385
extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
1386
extern int drm_irq_install(struct drm_device *dev);
1387
extern int drm_irq_uninstall(struct drm_device *dev);
1388
extern void drm_driver_irq_preinstall(struct drm_device *dev);
1389
extern void drm_driver_irq_postinstall(struct drm_device *dev);
1390
extern void drm_driver_irq_uninstall(struct drm_device *dev);
1392
extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1393
extern int drm_wait_vblank(struct drm_device *dev, void *data,
1394
struct drm_file *filp);
1395
extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1396
extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1397
extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
1398
struct timeval *vblanktime);
1399
extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
1400
extern int drm_vblank_get(struct drm_device *dev, int crtc);
1401
extern void drm_vblank_put(struct drm_device *dev, int crtc);
1402
extern void drm_vblank_off(struct drm_device *dev, int crtc);
1403
extern void drm_vblank_cleanup(struct drm_device *dev);
1404
extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
1405
struct timeval *tvblank, unsigned flags);
1406
extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
1407
int crtc, int *max_error,
1408
struct timeval *vblank_time,
1410
struct drm_crtc *refcrtc);
1411
extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
1414
drm_mode_parse_command_line_for_connector(const char *mode_option,
1415
struct drm_connector *connector,
1416
struct drm_cmdline_mode *mode);
1418
extern struct drm_display_mode *
1419
drm_mode_create_from_cmdline_mode(struct drm_device *dev,
1420
struct drm_cmdline_mode *cmd);
1422
/* Modesetting support */
1423
extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1424
extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1425
extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1426
struct drm_file *file_priv);
1428
/* AGP/GART support (drm_agpsupport.h) */
1429
extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1430
extern int drm_agp_acquire(struct drm_device *dev);
1431
extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1432
struct drm_file *file_priv);
1433
extern int drm_agp_release(struct drm_device *dev);
1434
extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1435
struct drm_file *file_priv);
1436
extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1437
extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1438
struct drm_file *file_priv);
1439
extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1440
extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1441
struct drm_file *file_priv);
1442
extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1443
extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1444
struct drm_file *file_priv);
1445
extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1446
extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1447
struct drm_file *file_priv);
1448
extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1449
extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1450
struct drm_file *file_priv);
1451
extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1452
extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1453
struct drm_file *file_priv);
1455
/* Stub support (drm_stub.h) */
1456
extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1457
struct drm_file *file_priv);
1458
extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1459
struct drm_file *file_priv);
1460
struct drm_master *drm_master_create(struct drm_minor *minor);
1461
extern struct drm_master *drm_master_get(struct drm_master *master);
1462
extern void drm_master_put(struct drm_master **master);
1464
extern void drm_put_dev(struct drm_device *dev);
1465
extern int drm_put_minor(struct drm_minor **minor);
1466
extern unsigned int drm_debug;
1468
extern unsigned int drm_vblank_offdelay;
1469
extern unsigned int drm_timestamp_precision;
1471
extern struct class *drm_class;
1472
extern struct proc_dir_entry *drm_proc_root;
1473
extern struct dentry *drm_debugfs_root;
1475
extern struct idr drm_minors_idr;
1477
extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1479
/* Proc support (drm_proc.h) */
1480
extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1481
struct proc_dir_entry *root);
1482
extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1484
/* Debugfs support */
1485
#if defined(CONFIG_DEBUG_FS)
1486
extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1487
struct dentry *root);
1488
extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1489
struct dentry *root, struct drm_minor *minor);
1490
extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1491
struct drm_minor *minor);
1492
extern int drm_debugfs_cleanup(struct drm_minor *minor);
1495
/* Info file support */
1496
extern int drm_name_info(struct seq_file *m, void *data);
1497
extern int drm_vm_info(struct seq_file *m, void *data);
1498
extern int drm_queues_info(struct seq_file *m, void *data);
1499
extern int drm_bufs_info(struct seq_file *m, void *data);
1500
extern int drm_vblank_info(struct seq_file *m, void *data);
1501
extern int drm_clients_info(struct seq_file *m, void* data);
1502
extern int drm_gem_name_info(struct seq_file *m, void *data);
1505
extern int drm_vma_info(struct seq_file *m, void *data);
1508
/* Scatter Gather Support (drm_scatter.h) */
1509
extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1510
extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1511
struct drm_file *file_priv);
1512
extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1513
extern int drm_sg_free(struct drm_device *dev, void *data,
1514
struct drm_file *file_priv);
1516
/* ATI PCIGART support (ati_pcigart.h) */
1517
extern int drm_ati_pcigart_init(struct drm_device *dev,
1518
struct drm_ati_pcigart_info * gart_info);
1519
extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1520
struct drm_ati_pcigart_info * gart_info);
1522
extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1524
extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1525
extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1527
/* sysfs support (drm_sysfs.c) */
1528
struct drm_sysfs_class;
1529
extern struct class *drm_sysfs_create(struct module *owner, char *name);
1530
extern void drm_sysfs_destroy(void);
1531
extern int drm_sysfs_device_add(struct drm_minor *minor);
1532
extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1533
extern void drm_sysfs_device_remove(struct drm_minor *minor);
1534
extern char *drm_get_connector_status_name(enum drm_connector_status status);
1535
extern int drm_sysfs_connector_add(struct drm_connector *connector);
1536
extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1538
/* Graphics Execution Manager library functions (drm_gem.c) */
1539
int drm_gem_init(struct drm_device *dev);
1540
void drm_gem_destroy(struct drm_device *dev);
1541
void drm_gem_object_release(struct drm_gem_object *obj);
1542
void drm_gem_object_free(struct kref *kref);
1543
struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1545
int drm_gem_object_init(struct drm_device *dev,
1546
struct drm_gem_object *obj, size_t size);
1547
int drm_gem_private_object_init(struct drm_device *dev,
1548
struct drm_gem_object *obj, size_t size);
1549
void drm_gem_object_handle_free(struct drm_gem_object *obj);
1550
void drm_gem_vm_open(struct vm_area_struct *vma);
1551
void drm_gem_vm_close(struct vm_area_struct *vma);
1552
int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1554
#include "drm_global.h"
1557
drm_gem_object_reference(struct drm_gem_object *obj)
1559
kref_get(&obj->refcount);
1563
drm_gem_object_unreference(struct drm_gem_object *obj)
1566
kref_put(&obj->refcount, drm_gem_object_free);
1570
drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1573
struct drm_device *dev = obj->dev;
1574
mutex_lock(&dev->struct_mutex);
1575
kref_put(&obj->refcount, drm_gem_object_free);
1576
mutex_unlock(&dev->struct_mutex);
1580
int drm_gem_handle_create(struct drm_file *file_priv,
1581
struct drm_gem_object *obj,
1583
int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
1586
drm_gem_object_handle_reference(struct drm_gem_object *obj)
1588
drm_gem_object_reference(obj);
1589
atomic_inc(&obj->handle_count);
1593
drm_gem_object_handle_unreference(struct drm_gem_object *obj)
1598
if (atomic_read(&obj->handle_count) == 0)
1601
* Must bump handle count first as this may be the last
1602
* ref, in which case the object would disappear before we
1603
* checked for a name
1605
if (atomic_dec_and_test(&obj->handle_count))
1606
drm_gem_object_handle_free(obj);
1607
drm_gem_object_unreference(obj);
1611
drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj)
1616
if (atomic_read(&obj->handle_count) == 0)
1620
* Must bump handle count first as this may be the last
1621
* ref, in which case the object would disappear before we
1622
* checked for a name
1625
if (atomic_dec_and_test(&obj->handle_count))
1626
drm_gem_object_handle_free(obj);
1627
drm_gem_object_unreference_unlocked(obj);
1630
void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
1631
int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
1633
struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1634
struct drm_file *filp,
1636
int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1637
struct drm_file *file_priv);
1638
int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1639
struct drm_file *file_priv);
1640
int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1641
struct drm_file *file_priv);
1642
void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1643
void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1645
extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1646
extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1647
extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1649
static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1652
struct drm_map_list *_entry;
1653
list_for_each_entry(_entry, &dev->maplist, head)
1654
if (_entry->user_token == token)
1659
static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1663
#include "drm_mem_util.h"
1665
extern int drm_fill_in_dev(struct drm_device *dev,
1666
const struct pci_device_id *ent,
1667
struct drm_driver *driver);
1668
int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
1672
static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1674
if (dev->driver->device_is_agp != NULL) {
1675
int err = (*dev->driver->device_is_agp) (dev);
1682
return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1685
extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1686
extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
1687
extern int drm_get_pci_dev(struct pci_dev *pdev,
1688
const struct pci_device_id *ent,
1689
struct drm_driver *driver);
1692
/* platform section */
1693
extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
1694
extern void drm_platform_exit(struct drm_driver *driver, struct platform_device *platform_device);
1696
extern int drm_get_platform_dev(struct platform_device *pdev,
1697
struct drm_driver *driver);
1699
#endif /* __KERNEL__ */