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1da177e4 | 1 | /* |
d7d2c48e DH |
2 | * Internal Header for the Direct Rendering Manager |
3 | * | |
1da177e4 LT |
4 | * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. |
5 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. | |
dcdb1674 | 6 | * Copyright (c) 2009-2010, Code Aurora Forum. |
1da177e4 LT |
7 | * All rights reserved. |
8 | * | |
d7d2c48e DH |
9 | * Author: Rickard E. (Rik) Faith <faith@valinux.com> |
10 | * Author: Gareth Hughes <gareth@valinux.com> | |
11 | * | |
1da177e4 LT |
12 | * Permission is hereby granted, free of charge, to any person obtaining a |
13 | * copy of this software and associated documentation files (the "Software"), | |
14 | * to deal in the Software without restriction, including without limitation | |
15 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
16 | * and/or sell copies of the Software, and to permit persons to whom the | |
17 | * Software is furnished to do so, subject to the following conditions: | |
18 | * | |
19 | * The above copyright notice and this permission notice (including the next | |
20 | * paragraph) shall be included in all copies or substantial portions of the | |
21 | * Software. | |
22 | * | |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
24 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
25 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
26 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
27 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
28 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
29 | * OTHER DEALINGS IN THE SOFTWARE. | |
30 | */ | |
31 | ||
32 | #ifndef _DRM_P_H_ | |
33 | #define _DRM_P_H_ | |
34 | ||
96993908 DH |
35 | #include <linux/agp_backend.h> |
36 | #include <linux/cdev.h> | |
37 | #include <linux/dma-mapping.h> | |
38 | #include <linux/file.h> | |
1da177e4 | 39 | #include <linux/fs.h> |
96993908 DH |
40 | #include <linux/highmem.h> |
41 | #include <linux/idr.h> | |
1da177e4 | 42 | #include <linux/init.h> |
96993908 | 43 | #include <linux/io.h> |
1da177e4 | 44 | #include <linux/jiffies.h> |
96993908 DH |
45 | #include <linux/kernel.h> |
46 | #include <linux/kref.h> | |
47 | #include <linux/miscdevice.h> | |
1da177e4 | 48 | #include <linux/mm.h> |
30e2fb18 | 49 | #include <linux/mutex.h> |
96993908 DH |
50 | #include <linux/pci.h> |
51 | #include <linux/platform_device.h> | |
52 | #include <linux/poll.h> | |
5d13d425 | 53 | #include <linux/ratelimit.h> |
96993908 DH |
54 | #include <linux/sched.h> |
55 | #include <linux/slab.h> | |
1da177e4 | 56 | #include <linux/types.h> |
d6db6564 | 57 | #include <linux/vmalloc.h> |
96993908 DH |
58 | #include <linux/workqueue.h> |
59 | ||
60 | #include <asm/mman.h> | |
1da177e4 | 61 | #include <asm/pgalloc.h> |
96993908 DH |
62 | #include <asm/uaccess.h> |
63 | ||
d7d2c48e DH |
64 | #include <uapi/drm/drm.h> |
65 | #include <uapi/drm/drm_mode.h> | |
66 | ||
67 | #include <drm/drm_agpsupport.h> | |
68 | #include <drm/drm_crtc.h> | |
69 | #include <drm/drm_global.h> | |
96993908 | 70 | #include <drm/drm_hashtab.h> |
d7d2c48e | 71 | #include <drm/drm_mem_util.h> |
96993908 DH |
72 | #include <drm/drm_mm.h> |
73 | #include <drm/drm_os_linux.h> | |
19218e48 | 74 | #include <drm/drm_sarea.h> |
0de23977 | 75 | #include <drm/drm_vma_manager.h> |
1da177e4 | 76 | |
de477254 PG |
77 | struct module; |
78 | ||
c153f45f EA |
79 | struct drm_file; |
80 | struct drm_device; | |
cc5ea594 | 81 | struct drm_agp_head; |
ba8286fa DV |
82 | struct drm_local_map; |
83 | struct drm_device_dma; | |
84 | struct drm_dma_handle; | |
d9fc9413 | 85 | struct drm_gem_object; |
c153f45f | 86 | |
edb37a95 | 87 | struct device_node; |
ebc64e45 | 88 | struct videomode; |
3aac4502 | 89 | struct reservation_object; |
b5e9c1a2 | 90 | struct dma_buf_attachment; |
ebc64e45 | 91 | |
87fdff81 | 92 | /* |
1414b76c LD |
93 | * 4 debug categories are defined: |
94 | * | |
95 | * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ... | |
96 | * This is the category used by the DRM_DEBUG() macro. | |
97 | * | |
98 | * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ... | |
99 | * This is the category used by the DRM_DEBUG_DRIVER() macro. | |
87fdff81 | 100 | * |
1414b76c LD |
101 | * KMS: used in the modesetting code. |
102 | * This is the category used by the DRM_DEBUG_KMS() macro. | |
87fdff81 | 103 | * |
1414b76c LD |
104 | * PRIME: used in the prime code. |
105 | * This is the category used by the DRM_DEBUG_PRIME() macro. | |
87fdff81 | 106 | * |
17a38d9c DV |
107 | * ATOMIC: used in the atomic code. |
108 | * This is the category used by the DRM_DEBUG_ATOMIC() macro. | |
109 | * | |
1414b76c LD |
110 | * Enabling verbose debug messages is done through the drm.debug parameter, |
111 | * each category being enabled by a bit. | |
112 | * | |
113 | * drm.debug=0x1 will enable CORE messages | |
114 | * drm.debug=0x2 will enable DRIVER messages | |
115 | * drm.debug=0x3 will enable CORE and DRIVER messages | |
116 | * ... | |
117 | * drm.debug=0xf will enable all messages | |
118 | * | |
119 | * An interesting feature is that it's possible to enable verbose logging at | |
120 | * run-time by echoing the debug value in its sysfs node: | |
121 | * # echo 0xf > /sys/module/drm/parameters/debug | |
87fdff81 | 122 | */ |
1414b76c LD |
123 | #define DRM_UT_CORE 0x01 |
124 | #define DRM_UT_DRIVER 0x02 | |
125 | #define DRM_UT_KMS 0x04 | |
126 | #define DRM_UT_PRIME 0x08 | |
17a38d9c | 127 | #define DRM_UT_ATOMIC 0x10 |
4fefcb27 | 128 | |
1287aa90 LD |
129 | extern __printf(2, 3) |
130 | void drm_ut_debug_printk(const char *function_name, | |
b9075fa9 | 131 | const char *format, ...); |
a1f1a79c JP |
132 | extern __printf(1, 2) |
133 | void drm_err(const char *format, ...); | |
5ad3d883 | 134 | |
1da177e4 LT |
135 | /***********************************************************************/ |
136 | /** \name DRM template customization defaults */ | |
137 | /*@{*/ | |
138 | ||
139 | /* driver capabilities and requirements mask */ | |
0e975980 PA |
140 | #define DRIVER_USE_AGP 0x1 |
141 | #define DRIVER_PCI_DMA 0x8 | |
142 | #define DRIVER_SG 0x10 | |
143 | #define DRIVER_HAVE_DMA 0x20 | |
144 | #define DRIVER_HAVE_IRQ 0x40 | |
145 | #define DRIVER_IRQ_SHARED 0x80 | |
146 | #define DRIVER_GEM 0x1000 | |
147 | #define DRIVER_MODESET 0x2000 | |
148 | #define DRIVER_PRIME 0x4000 | |
149 | #define DRIVER_RENDER 0x8000 | |
150 | #define DRIVER_ATOMIC 0x10000 | |
151 | #define DRIVER_KMS_LEGACY_CONTEXT 0x20000 | |
8410ea3b | 152 | |
1da177e4 | 153 | /***********************************************************************/ |
1da177e4 LT |
154 | /** \name Macros to make printk easier */ |
155 | /*@{*/ | |
156 | ||
157 | /** | |
158 | * Error output. | |
159 | * | |
160 | * \param fmt printf() like format string. | |
161 | * \param arg arguments | |
162 | */ | |
5ad3d883 | 163 | #define DRM_ERROR(fmt, ...) \ |
a1f1a79c | 164 | drm_err(fmt, ##__VA_ARGS__) |
1da177e4 | 165 | |
5d13d425 RC |
166 | /** |
167 | * Rate limited error output. Like DRM_ERROR() but won't flood the log. | |
168 | * | |
169 | * \param fmt printf() like format string. | |
170 | * \param arg arguments | |
171 | */ | |
172 | #define DRM_ERROR_RATELIMITED(fmt, ...) \ | |
173 | ({ \ | |
174 | static DEFINE_RATELIMIT_STATE(_rs, \ | |
175 | DEFAULT_RATELIMIT_INTERVAL, \ | |
176 | DEFAULT_RATELIMIT_BURST); \ | |
177 | \ | |
178 | if (__ratelimit(&_rs)) \ | |
a1f1a79c | 179 | drm_err(fmt, ##__VA_ARGS__); \ |
5d13d425 RC |
180 | }) |
181 | ||
5ad3d883 JP |
182 | #define DRM_INFO(fmt, ...) \ |
183 | printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) | |
1da177e4 | 184 | |
48b8f631 JN |
185 | #define DRM_INFO_ONCE(fmt, ...) \ |
186 | printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) | |
187 | ||
1da177e4 LT |
188 | /** |
189 | * Debug output. | |
b5e89ed5 | 190 | * |
1da177e4 LT |
191 | * \param fmt printf() like format string. |
192 | * \param arg arguments | |
193 | */ | |
4fefcb27 | 194 | #define DRM_DEBUG(fmt, args...) \ |
1da177e4 | 195 | do { \ |
a73d4e91 | 196 | if (unlikely(drm_debug & DRM_UT_CORE)) \ |
1287aa90 | 197 | drm_ut_debug_printk(__func__, fmt, ##args); \ |
4fefcb27 | 198 | } while (0) |
199 | ||
8a4c47f3 | 200 | #define DRM_DEBUG_DRIVER(fmt, args...) \ |
4fefcb27 | 201 | do { \ |
a73d4e91 | 202 | if (unlikely(drm_debug & DRM_UT_DRIVER)) \ |
1287aa90 | 203 | drm_ut_debug_printk(__func__, fmt, ##args); \ |
4fefcb27 | 204 | } while (0) |
a73d4e91 | 205 | #define DRM_DEBUG_KMS(fmt, args...) \ |
4fefcb27 | 206 | do { \ |
a73d4e91 | 207 | if (unlikely(drm_debug & DRM_UT_KMS)) \ |
1287aa90 | 208 | drm_ut_debug_printk(__func__, fmt, ##args); \ |
4fefcb27 | 209 | } while (0) |
3248877e DA |
210 | #define DRM_DEBUG_PRIME(fmt, args...) \ |
211 | do { \ | |
a73d4e91 | 212 | if (unlikely(drm_debug & DRM_UT_PRIME)) \ |
1287aa90 | 213 | drm_ut_debug_printk(__func__, fmt, ##args); \ |
1da177e4 | 214 | } while (0) |
17a38d9c DV |
215 | #define DRM_DEBUG_ATOMIC(fmt, args...) \ |
216 | do { \ | |
217 | if (unlikely(drm_debug & DRM_UT_ATOMIC)) \ | |
218 | drm_ut_debug_printk(__func__, fmt, ##args); \ | |
219 | } while (0) | |
1da177e4 | 220 | |
1da177e4 LT |
221 | /*@}*/ |
222 | ||
1da177e4 LT |
223 | /***********************************************************************/ |
224 | /** \name Internal types and structures */ | |
225 | /*@{*/ | |
226 | ||
1da177e4 | 227 | #define DRM_IF_VERSION(maj, min) (maj << 16 | min) |
1da177e4 | 228 | |
1da177e4 LT |
229 | /** |
230 | * Ioctl function type. | |
231 | * | |
232 | * \param inode device inode. | |
6c340eac | 233 | * \param file_priv DRM file private pointer. |
1da177e4 LT |
234 | * \param cmd command. |
235 | * \param arg argument. | |
236 | */ | |
c153f45f EA |
237 | typedef int drm_ioctl_t(struct drm_device *dev, void *data, |
238 | struct drm_file *file_priv); | |
1da177e4 | 239 | |
9a186645 DA |
240 | typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd, |
241 | unsigned long arg); | |
242 | ||
1a95916f KH |
243 | #define DRM_IOCTL_NR(n) _IOC_NR(n) |
244 | #define DRM_MAJOR 226 | |
245 | ||
a7a2cc31 DA |
246 | #define DRM_AUTH 0x1 |
247 | #define DRM_MASTER 0x2 | |
248 | #define DRM_ROOT_ONLY 0x4 | |
f453ba04 | 249 | #define DRM_CONTROL_ALLOW 0x8 |
ed8b6704 | 250 | #define DRM_UNLOCKED 0x10 |
1793126f | 251 | #define DRM_RENDER_ALLOW 0x20 |
a7a2cc31 | 252 | |
c153f45f EA |
253 | struct drm_ioctl_desc { |
254 | unsigned int cmd; | |
a7a2cc31 | 255 | int flags; |
c972d750 | 256 | drm_ioctl_t *func; |
b9434d0f | 257 | const char *name; |
c153f45f EA |
258 | }; |
259 | ||
260 | /** | |
261 | * Creates a driver or general drm_ioctl_desc array entry for the given | |
262 | * ioctl, for use by drm_ioctl(). | |
263 | */ | |
1b2f1489 | 264 | |
066626d5 EV |
265 | #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ |
266 | [DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = { \ | |
267 | .cmd = DRM_IOCTL_##ioctl, \ | |
268 | .func = _func, \ | |
269 | .flags = _flags, \ | |
270 | .name = #ioctl \ | |
271 | } | |
1da177e4 | 272 | |
c9a9c5e0 KH |
273 | /* Event queued up for userspace to read */ |
274 | struct drm_pending_event { | |
275 | struct drm_event *event; | |
276 | struct list_head link; | |
277 | struct drm_file *file_priv; | |
b9c2c9ae JB |
278 | pid_t pid; /* pid of requester, no guarantee it's valid by the time |
279 | we deliver the event, for tracing only */ | |
c9a9c5e0 KH |
280 | void (*destroy)(struct drm_pending_event *event); |
281 | }; | |
282 | ||
3248877e DA |
283 | /* initial implementaton using a linked list - todo hashtab */ |
284 | struct drm_prime_file_private { | |
285 | struct list_head head; | |
286 | struct mutex lock; | |
287 | }; | |
288 | ||
1da177e4 | 289 | /** File private data */ |
84b1fd10 | 290 | struct drm_file { |
39868bd7 | 291 | unsigned authenticated :1; |
c996fd0b TH |
292 | /* Whether we're master for a minor. Protected by master_mutex */ |
293 | unsigned is_master :1; | |
39868bd7 CW |
294 | /* true when the client has asked us to expose stereo 3D mode flags */ |
295 | unsigned stereo_allowed :1; | |
681e7ec7 MR |
296 | /* |
297 | * true if client understands CRTC primary planes and cursor planes | |
298 | * in the plane list | |
299 | */ | |
300 | unsigned universal_planes:1; | |
88a48e29 RC |
301 | /* true if client understands atomic properties */ |
302 | unsigned atomic:1; | |
39868bd7 | 303 | |
5fce5e0b EB |
304 | struct pid *pid; |
305 | kuid_t uid; | |
b5e89ed5 | 306 | drm_magic_t magic; |
bd1b331f | 307 | struct list_head lhead; |
2c14f28b | 308 | struct drm_minor *minor; |
b5e89ed5 | 309 | unsigned long lock_count; |
7c1c2871 | 310 | |
673a394b EA |
311 | /** Mapping of mm object handles to object pointers. */ |
312 | struct idr object_idr; | |
313 | /** Lock for synchronization of access to object_idr. */ | |
314 | spinlock_t table_lock; | |
7c1c2871 | 315 | |
6c340eac | 316 | struct file *filp; |
8562b3f2 | 317 | void *driver_priv; |
7c1c2871 | 318 | |
7c1c2871 DA |
319 | struct drm_master *master; /* master this node is currently associated with |
320 | N.B. not always minor->master */ | |
4b096ac1 DV |
321 | /** |
322 | * fbs - List of framebuffers associated with this file. | |
323 | * | |
324 | * Protected by fbs_lock. Note that the fbs list holds a reference on | |
325 | * the fb object to prevent it from untimely disappearing. | |
326 | */ | |
f453ba04 | 327 | struct list_head fbs; |
4b096ac1 | 328 | struct mutex fbs_lock; |
c9a9c5e0 | 329 | |
e2f5d2ea DS |
330 | /** User-created blob properties; this retains a reference on the |
331 | * property. */ | |
332 | struct list_head blobs; | |
333 | ||
c9a9c5e0 KH |
334 | wait_queue_head_t event_wait; |
335 | struct list_head event_list; | |
336 | int event_space; | |
3248877e DA |
337 | |
338 | struct drm_prime_file_private prime; | |
84b1fd10 | 339 | }; |
1da177e4 | 340 | |
1da177e4 LT |
341 | /** |
342 | * Lock data. | |
343 | */ | |
55910517 | 344 | struct drm_lock_data { |
c60ce623 | 345 | struct drm_hw_lock *hw_lock; /**< Hardware lock */ |
8562b3f2 DA |
346 | /** Private of lock holder's file (NULL=kernel) */ |
347 | struct drm_file *file_priv; | |
1da177e4 | 348 | wait_queue_head_t lock_queue; /**< Queue of blocked processes */ |
b5e89ed5 | 349 | unsigned long lock_time; /**< Time of last lock in jiffies */ |
040ac320 TH |
350 | spinlock_t spinlock; |
351 | uint32_t kernel_waiters; | |
352 | uint32_t user_waiters; | |
353 | int idle_has_lock; | |
55910517 | 354 | }; |
1da177e4 | 355 | |
c996fd0b TH |
356 | /** |
357 | * struct drm_master - drm master structure | |
358 | * | |
359 | * @refcount: Refcount for this master object. | |
360 | * @minor: Link back to minor char device we are master for. Immutable. | |
361 | * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex. | |
362 | * @unique_len: Length of unique field. Protected by drm_global_mutex. | |
32e7b94a | 363 | * @magic_map: Map of used authentication tokens. Protected by struct_mutex. |
c996fd0b TH |
364 | * @lock: DRI lock information. |
365 | * @driver_priv: Pointer to driver-private information. | |
366 | */ | |
7c1c2871 | 367 | struct drm_master { |
c996fd0b TH |
368 | struct kref refcount; |
369 | struct drm_minor *minor; | |
370 | char *unique; | |
371 | int unique_len; | |
32e7b94a | 372 | struct idr magic_map; |
c996fd0b TH |
373 | struct drm_lock_data lock; |
374 | void *driver_priv; | |
7c1c2871 DA |
375 | }; |
376 | ||
27641c3f MK |
377 | /* Size of ringbuffer for vblank timestamps. Just double-buffer |
378 | * in initial implementation. | |
379 | */ | |
380 | #define DRM_VBLANKTIME_RBSIZE 2 | |
381 | ||
382 | /* Flags and return codes for get_vblank_timestamp() driver function. */ | |
383 | #define DRM_CALLED_FROM_VBLIRQ 1 | |
384 | #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0) | |
3d3cbd84 | 385 | #define DRM_VBLANKTIME_IN_VBLANK (1 << 1) |
27641c3f MK |
386 | |
387 | /* get_scanout_position() return flags */ | |
388 | #define DRM_SCANOUTPOS_VALID (1 << 0) | |
3d3cbd84 | 389 | #define DRM_SCANOUTPOS_IN_VBLANK (1 << 1) |
27641c3f MK |
390 | #define DRM_SCANOUTPOS_ACCURATE (1 << 2) |
391 | ||
1da177e4 LT |
392 | /** |
393 | * DRM driver structure. This structure represent the common code for | |
394 | * a family of cards. There will one drm_device for each card present | |
395 | * in this family | |
396 | */ | |
1da177e4 | 397 | struct drm_driver { |
22eae947 DA |
398 | int (*load) (struct drm_device *, unsigned long flags); |
399 | int (*firstopen) (struct drm_device *); | |
84b1fd10 | 400 | int (*open) (struct drm_device *, struct drm_file *); |
6c340eac | 401 | void (*preclose) (struct drm_device *, struct drm_file *file_priv); |
84b1fd10 | 402 | void (*postclose) (struct drm_device *, struct drm_file *); |
22eae947 DA |
403 | void (*lastclose) (struct drm_device *); |
404 | int (*unload) (struct drm_device *); | |
b932ccb5 | 405 | int (*suspend) (struct drm_device *, pm_message_t state); |
e8b962b6 | 406 | int (*resume) (struct drm_device *); |
c153f45f | 407 | int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv); |
b5e89ed5 | 408 | int (*dma_quiescent) (struct drm_device *); |
84b1fd10 | 409 | int (*context_dtor) (struct drm_device *dev, int context); |
915b4d11 | 410 | int (*set_busid)(struct drm_device *dev, struct drm_master *master); |
b5e89ed5 | 411 | |
0a3e67a4 JB |
412 | /** |
413 | * get_vblank_counter - get raw hardware vblank counter | |
414 | * @dev: DRM device | |
415 | * @crtc: counter to fetch | |
416 | * | |
3b02ab88 LP |
417 | * Driver callback for fetching a raw hardware vblank counter for @crtc. |
418 | * If a device doesn't have a hardware counter, the driver can simply | |
419 | * return the value of drm_vblank_count. The DRM core will account for | |
420 | * missed vblank events while interrupts where disabled based on system | |
421 | * timestamps. | |
0a3e67a4 JB |
422 | * |
423 | * Wraparound handling and loss of events due to modesetting is dealt | |
424 | * with in the DRM core code. | |
425 | * | |
426 | * RETURNS | |
427 | * Raw vblank counter value. | |
428 | */ | |
429 | u32 (*get_vblank_counter) (struct drm_device *dev, int crtc); | |
430 | ||
431 | /** | |
432 | * enable_vblank - enable vblank interrupt events | |
433 | * @dev: DRM device | |
434 | * @crtc: which irq to enable | |
435 | * | |
436 | * Enable vblank interrupts for @crtc. If the device doesn't have | |
437 | * a hardware vblank counter, this routine should be a no-op, since | |
438 | * interrupts will have to stay on to keep the count accurate. | |
439 | * | |
440 | * RETURNS | |
441 | * Zero on success, appropriate errno if the given @crtc's vblank | |
442 | * interrupt cannot be enabled. | |
443 | */ | |
444 | int (*enable_vblank) (struct drm_device *dev, int crtc); | |
445 | ||
446 | /** | |
447 | * disable_vblank - disable vblank interrupt events | |
448 | * @dev: DRM device | |
449 | * @crtc: which irq to enable | |
450 | * | |
451 | * Disable vblank interrupts for @crtc. If the device doesn't have | |
452 | * a hardware vblank counter, this routine should be a no-op, since | |
453 | * interrupts will have to stay on to keep the count accurate. | |
454 | */ | |
455 | void (*disable_vblank) (struct drm_device *dev, int crtc); | |
456 | ||
cda17380 DA |
457 | /** |
458 | * Called by \c drm_device_is_agp. Typically used to determine if a | |
459 | * card is really attached to AGP or not. | |
460 | * | |
461 | * \param dev DRM device handle | |
462 | * | |
463 | * \returns | |
464 | * One of three values is returned depending on whether or not the | |
465 | * card is absolutely \b not AGP (return of 0), absolutely \b is AGP | |
466 | * (return of 1), or may or may not be AGP (return of 2). | |
467 | */ | |
84b1fd10 | 468 | int (*device_is_agp) (struct drm_device *dev); |
cda17380 | 469 | |
27641c3f MK |
470 | /** |
471 | * Called by vblank timestamping code. | |
472 | * | |
8f6fce03 MK |
473 | * Return the current display scanout position from a crtc, and an |
474 | * optional accurate ktime_get timestamp of when position was measured. | |
27641c3f MK |
475 | * |
476 | * \param dev DRM device. | |
477 | * \param crtc Id of the crtc to query. | |
abca9e45 | 478 | * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0). |
27641c3f MK |
479 | * \param *vpos Target location for current vertical scanout position. |
480 | * \param *hpos Target location for current horizontal scanout position. | |
8f6fce03 MK |
481 | * \param *stime Target location for timestamp taken immediately before |
482 | * scanout position query. Can be NULL to skip timestamp. | |
483 | * \param *etime Target location for timestamp taken immediately after | |
484 | * scanout position query. Can be NULL to skip timestamp. | |
27641c3f MK |
485 | * |
486 | * Returns vpos as a positive number while in active scanout area. | |
487 | * Returns vpos as a negative number inside vblank, counting the number | |
488 | * of scanlines to go until end of vblank, e.g., -1 means "one scanline | |
489 | * until start of active scanout / end of vblank." | |
490 | * | |
491 | * \return Flags, or'ed together as follows: | |
492 | * | |
25985edc | 493 | * DRM_SCANOUTPOS_VALID = Query successful. |
27641c3f MK |
494 | * DRM_SCANOUTPOS_INVBL = Inside vblank. |
495 | * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of | |
496 | * this flag means that returned position may be offset by a constant | |
497 | * but unknown small number of scanlines wrt. real scanout position. | |
498 | * | |
499 | */ | |
500 | int (*get_scanout_position) (struct drm_device *dev, int crtc, | |
abca9e45 | 501 | unsigned int flags, |
8f6fce03 MK |
502 | int *vpos, int *hpos, ktime_t *stime, |
503 | ktime_t *etime); | |
27641c3f MK |
504 | |
505 | /** | |
506 | * Called by \c drm_get_last_vbltimestamp. Should return a precise | |
507 | * timestamp when the most recent VBLANK interval ended or will end. | |
508 | * | |
509 | * Specifically, the timestamp in @vblank_time should correspond as | |
510 | * closely as possible to the time when the first video scanline of | |
511 | * the video frame after the end of VBLANK will start scanning out, | |
42b2aa86 | 512 | * the time immediately after end of the VBLANK interval. If the |
27641c3f MK |
513 | * @crtc is currently inside VBLANK, this will be a time in the future. |
514 | * If the @crtc is currently scanning out a frame, this will be the | |
515 | * past start time of the current scanout. This is meant to adhere | |
516 | * to the OpenML OML_sync_control extension specification. | |
517 | * | |
518 | * \param dev dev DRM device handle. | |
519 | * \param crtc crtc for which timestamp should be returned. | |
520 | * \param *max_error Maximum allowable timestamp error in nanoseconds. | |
521 | * Implementation should strive to provide timestamp | |
522 | * with an error of at most *max_error nanoseconds. | |
523 | * Returns true upper bound on error for timestamp. | |
524 | * \param *vblank_time Target location for returned vblank timestamp. | |
525 | * \param flags 0 = Defaults, no special treatment needed. | |
526 | * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank | |
527 | * irq handler. Some drivers need to apply some workarounds | |
528 | * for gpu-specific vblank irq quirks if flag is set. | |
529 | * | |
530 | * \returns | |
531 | * Zero if timestamping isn't supported in current display mode or a | |
532 | * negative number on failure. A positive status code on success, | |
533 | * which describes how the vblank_time timestamp was computed. | |
534 | */ | |
535 | int (*get_vblank_timestamp) (struct drm_device *dev, int crtc, | |
536 | int *max_error, | |
537 | struct timeval *vblank_time, | |
538 | unsigned flags); | |
539 | ||
1da177e4 | 540 | /* these have to be filled in */ |
b5e89ed5 | 541 | |
e9f0d76f | 542 | irqreturn_t(*irq_handler) (int irq, void *arg); |
84b1fd10 | 543 | void (*irq_preinstall) (struct drm_device *dev); |
0a3e67a4 | 544 | int (*irq_postinstall) (struct drm_device *dev); |
84b1fd10 | 545 | void (*irq_uninstall) (struct drm_device *dev); |
22eae947 | 546 | |
7c1c2871 DA |
547 | /* Master routines */ |
548 | int (*master_create)(struct drm_device *dev, struct drm_master *master); | |
549 | void (*master_destroy)(struct drm_device *dev, struct drm_master *master); | |
862302ff TH |
550 | /** |
551 | * master_set is called whenever the minor master is set. | |
552 | * master_drop is called whenever the minor master is dropped. | |
553 | */ | |
554 | ||
555 | int (*master_set)(struct drm_device *dev, struct drm_file *file_priv, | |
556 | bool from_open); | |
557 | void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv, | |
558 | bool from_release); | |
7c1c2871 | 559 | |
955b12de BG |
560 | int (*debugfs_init)(struct drm_minor *minor); |
561 | void (*debugfs_cleanup)(struct drm_minor *minor); | |
673a394b EA |
562 | |
563 | /** | |
564 | * Driver-specific constructor for drm_gem_objects, to set up | |
565 | * obj->driver_private. | |
566 | * | |
567 | * Returns 0 on success. | |
568 | */ | |
673a394b | 569 | void (*gem_free_object) (struct drm_gem_object *obj); |
304eda32 BS |
570 | int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); |
571 | void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); | |
673a394b | 572 | |
3248877e DA |
573 | /* prime: */ |
574 | /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */ | |
575 | int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv, | |
576 | uint32_t handle, uint32_t flags, int *prime_fd); | |
577 | /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */ | |
578 | int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv, | |
579 | int prime_fd, uint32_t *handle); | |
580 | /* export GEM -> dmabuf */ | |
581 | struct dma_buf * (*gem_prime_export)(struct drm_device *dev, | |
582 | struct drm_gem_object *obj, int flags); | |
583 | /* import dmabuf -> GEM */ | |
584 | struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, | |
585 | struct dma_buf *dma_buf); | |
89177644 AP |
586 | /* low-level interface used by drm_gem_prime_{import,export} */ |
587 | int (*gem_prime_pin)(struct drm_gem_object *obj); | |
102d6dba | 588 | void (*gem_prime_unpin)(struct drm_gem_object *obj); |
3aac4502 ML |
589 | struct reservation_object * (*gem_prime_res_obj)( |
590 | struct drm_gem_object *obj); | |
89177644 AP |
591 | struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj); |
592 | struct drm_gem_object *(*gem_prime_import_sg_table)( | |
b5e9c1a2 ML |
593 | struct drm_device *dev, |
594 | struct dma_buf_attachment *attach, | |
89177644 AP |
595 | struct sg_table *sgt); |
596 | void *(*gem_prime_vmap)(struct drm_gem_object *obj); | |
597 | void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr); | |
7c397cd9 JS |
598 | int (*gem_prime_mmap)(struct drm_gem_object *obj, |
599 | struct vm_area_struct *vma); | |
3248877e | 600 | |
28d52043 DA |
601 | /* vga arb irq handler */ |
602 | void (*vgaarb_irq)(struct drm_device *dev, bool state); | |
603 | ||
ff72145b DA |
604 | /* dumb alloc support */ |
605 | int (*dumb_create)(struct drm_file *file_priv, | |
606 | struct drm_device *dev, | |
607 | struct drm_mode_create_dumb *args); | |
608 | int (*dumb_map_offset)(struct drm_file *file_priv, | |
609 | struct drm_device *dev, uint32_t handle, | |
610 | uint64_t *offset); | |
611 | int (*dumb_destroy)(struct drm_file *file_priv, | |
612 | struct drm_device *dev, | |
613 | uint32_t handle); | |
614 | ||
a2c0a97b | 615 | /* Driver private ops for this object */ |
78b68556 | 616 | const struct vm_operations_struct *gem_vm_ops; |
a2c0a97b | 617 | |
22eae947 DA |
618 | int major; |
619 | int minor; | |
620 | int patchlevel; | |
621 | char *name; | |
622 | char *desc; | |
623 | char *date; | |
624 | ||
1da177e4 LT |
625 | u32 driver_features; |
626 | int dev_priv_size; | |
baa70943 | 627 | const struct drm_ioctl_desc *ioctls; |
1da177e4 | 628 | int num_ioctls; |
e08e96de | 629 | const struct file_operations *fops; |
8410ea3b | 630 | |
b3f2333d DV |
631 | /* List of devices hanging off this driver with stealth attach. */ |
632 | struct list_head legacy_dev_list; | |
1da177e4 LT |
633 | }; |
634 | ||
cb8a239b DH |
635 | enum drm_minor_type { |
636 | DRM_MINOR_LEGACY, | |
637 | DRM_MINOR_CONTROL, | |
638 | DRM_MINOR_RENDER, | |
639 | DRM_MINOR_CNT, | |
640 | }; | |
2c14f28b | 641 | |
955b12de BG |
642 | /** |
643 | * Info file list entry. This structure represents a debugfs or proc file to | |
644 | * be created by the drm core | |
645 | */ | |
646 | struct drm_info_list { | |
647 | const char *name; /** file name */ | |
648 | int (*show)(struct seq_file*, void*); /** show callback */ | |
649 | u32 driver_features; /**< Required driver features for this entry */ | |
650 | void *data; | |
651 | }; | |
652 | ||
653 | /** | |
654 | * debugfs node structure. This structure represents a debugfs file. | |
655 | */ | |
656 | struct drm_info_node { | |
657 | struct list_head list; | |
658 | struct drm_minor *minor; | |
ce089b54 | 659 | const struct drm_info_list *info_ent; |
955b12de BG |
660 | struct dentry *dent; |
661 | }; | |
662 | ||
1da177e4 | 663 | /** |
2c14f28b | 664 | * DRM minor structure. This structure represents a drm minor number. |
1da177e4 | 665 | */ |
2c14f28b DA |
666 | struct drm_minor { |
667 | int index; /**< Minor device number */ | |
668 | int type; /**< Control or render */ | |
5bdebb18 | 669 | struct device *kdev; /**< Linux device */ |
1da177e4 | 670 | struct drm_device *dev; |
955b12de | 671 | |
955b12de | 672 | struct dentry *debugfs_root; |
b3e067c0 MS |
673 | |
674 | struct list_head debugfs_list; | |
675 | struct mutex debugfs_lock; /* Protects debugfs_list. */ | |
955b12de | 676 | |
c996fd0b TH |
677 | /* currently active master for this node. Protected by master_mutex */ |
678 | struct drm_master *master; | |
84b1fd10 | 679 | }; |
1da177e4 | 680 | |
1794d257 | 681 | |
c9a9c5e0 KH |
682 | struct drm_pending_vblank_event { |
683 | struct drm_pending_event base; | |
684 | int pipe; | |
685 | struct drm_event_vblank event; | |
686 | }; | |
687 | ||
5380e929 | 688 | struct drm_vblank_crtc { |
e69595c2 | 689 | struct drm_device *dev; /* pointer to the drm_device */ |
5380e929 | 690 | wait_queue_head_t queue; /**< VBLANK wait queue */ |
e69595c2 | 691 | struct timer_list disable_timer; /* delayed disable timer */ |
99264a61 DV |
692 | |
693 | /* vblank counter, protected by dev->vblank_time_lock for writes */ | |
694 | unsigned long count; | |
695 | /* vblank timestamps, protected by dev->vblank_time_lock for writes */ | |
696 | struct timeval time[DRM_VBLANKTIME_RBSIZE]; | |
697 | ||
5380e929 VS |
698 | atomic_t refcount; /* number of users of vblank interruptsper crtc */ |
699 | u32 last; /* protected by dev->vbl_lock, used */ | |
700 | /* for wraparound handling */ | |
701 | u32 last_wait; /* Last vblank seqno waited per CRTC */ | |
702 | unsigned int inmodeset; /* Display driver is setting mode */ | |
e69595c2 | 703 | int crtc; /* crtc index */ |
5380e929 VS |
704 | bool enabled; /* so we don't call enable more than |
705 | once per disable */ | |
706 | }; | |
707 | ||
1da177e4 LT |
708 | /** |
709 | * DRM device structure. This structure represent a complete card that | |
710 | * may contain multiple heads. | |
711 | */ | |
84b1fd10 | 712 | struct drm_device { |
b3f2333d | 713 | struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */ |
b5e89ed5 | 714 | int if_version; /**< Highest interface version set */ |
1da177e4 | 715 | |
45e212d2 DH |
716 | /** \name Lifetime Management */ |
717 | /*@{ */ | |
099d1c29 | 718 | struct kref ref; /**< Object ref-count */ |
45e212d2 DH |
719 | struct device *dev; /**< Device structure of bus-device */ |
720 | struct drm_driver *driver; /**< DRM driver managing the device */ | |
721 | void *dev_private; /**< DRM driver private data */ | |
45e212d2 DH |
722 | struct drm_minor *control; /**< Control node */ |
723 | struct drm_minor *primary; /**< Primary node */ | |
724 | struct drm_minor *render; /**< Render node */ | |
725 | atomic_t unplugged; /**< Flag whether dev is dead */ | |
07b48c3a | 726 | struct inode *anon_inode; /**< inode for private address-space */ |
ca8e2ad7 | 727 | char *unique; /**< unique name of the device */ |
45e212d2 DH |
728 | /*@} */ |
729 | ||
1da177e4 | 730 | /** \name Locks */ |
b5e89ed5 | 731 | /*@{ */ |
30e2fb18 | 732 | struct mutex struct_mutex; /**< For others */ |
c996fd0b | 733 | struct mutex master_mutex; /**< For drm_minor::master and drm_file::is_master */ |
b5e89ed5 | 734 | /*@} */ |
1da177e4 LT |
735 | |
736 | /** \name Usage Counters */ | |
b5e89ed5 | 737 | /*@{ */ |
fc8fd40e | 738 | int open_count; /**< Outstanding files open, protected by drm_global_mutex. */ |
2177a218 | 739 | spinlock_t buf_lock; /**< For drm_device::buf_use and a few other things. */ |
b5e89ed5 DA |
740 | int buf_use; /**< Buffers in use -- cannot alloc */ |
741 | atomic_t buf_alloc; /**< Buffer allocation in progress */ | |
742 | /*@} */ | |
1da177e4 | 743 | |
bd1b331f | 744 | struct list_head filelist; |
1da177e4 LT |
745 | |
746 | /** \name Memory management */ | |
b5e89ed5 | 747 | /*@{ */ |
bd1b331f | 748 | struct list_head maplist; /**< Linked list of regions */ |
e0be428e | 749 | struct drm_open_hash map_hash; /**< User token hash table for maps */ |
1da177e4 LT |
750 | |
751 | /** \name Context handle management */ | |
b5e89ed5 | 752 | /*@{ */ |
bd1b331f | 753 | struct list_head ctxlist; /**< Linked list of context handles */ |
30e2fb18 | 754 | struct mutex ctxlist_mutex; /**< For ctxlist */ |
1da177e4 | 755 | |
62968144 | 756 | struct idr ctx_idr; |
1da177e4 | 757 | |
bd1b331f | 758 | struct list_head vmalist; /**< List of vmas (for debugging) */ |
f453ba04 | 759 | |
b5e89ed5 | 760 | /*@} */ |
1da177e4 | 761 | |
a344a7e7 | 762 | /** \name DMA support */ |
b5e89ed5 | 763 | /*@{ */ |
cdd55a29 | 764 | struct drm_device_dma *dma; /**< Optional pointer for DMA support */ |
b5e89ed5 | 765 | /*@} */ |
1da177e4 LT |
766 | |
767 | /** \name Context support */ | |
b5e89ed5 | 768 | /*@{ */ |
7c1a38e3 | 769 | |
1da177e4 | 770 | __volatile__ long context_flag; /**< Context swapping flag */ |
b5e89ed5 | 771 | int last_context; /**< Last current context */ |
b5e89ed5 DA |
772 | /*@} */ |
773 | ||
1da177e4 | 774 | /** \name VBLANK IRQ support */ |
b5e89ed5 | 775 | /*@{ */ |
b46004b7 TR |
776 | bool irq_enabled; |
777 | int irq; | |
b5e89ed5 | 778 | |
0a3e67a4 JB |
779 | /* |
780 | * At load time, disabling the vblank interrupt won't be allowed since | |
781 | * old clients may not call the modeset ioctl and therefore misbehave. | |
782 | * Once the modeset ioctl *has* been called though, we can safely | |
783 | * disable them when unused. | |
784 | */ | |
ba0bf120 | 785 | bool vblank_disable_allowed; |
0a3e67a4 | 786 | |
00185e66 VS |
787 | /* |
788 | * If true, vblank interrupt will be disabled immediately when the | |
789 | * refcount drops to zero, as opposed to via the vblank disable | |
790 | * timer. | |
791 | * This can be set to true it the hardware has a working vblank | |
792 | * counter and the driver uses drm_vblank_on() and drm_vblank_off() | |
793 | * appropriately. | |
794 | */ | |
795 | bool vblank_disable_immediate; | |
796 | ||
5380e929 VS |
797 | /* array of size num_crtcs */ |
798 | struct drm_vblank_crtc *vblank; | |
0a3e67a4 | 799 | |
27641c3f | 800 | spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ |
b5e89ed5 | 801 | spinlock_t vbl_lock; |
0a3e67a4 JB |
802 | |
803 | u32 max_vblank_count; /**< size of vblank counter register */ | |
b5e89ed5 | 804 | |
c9a9c5e0 KH |
805 | /** |
806 | * List of events | |
807 | */ | |
808 | struct list_head vblank_event_list; | |
809 | spinlock_t event_lock; | |
810 | ||
b5e89ed5 | 811 | /*@} */ |
b5e89ed5 | 812 | |
55910517 | 813 | struct drm_agp_head *agp; /**< AGP data */ |
1da177e4 | 814 | |
b5e89ed5 | 815 | struct pci_dev *pdev; /**< PCI device structure */ |
1da177e4 | 816 | #ifdef __alpha__ |
1da177e4 | 817 | struct pci_controller *hose; |
1da177e4 | 818 | #endif |
dcdb1674 JC |
819 | |
820 | struct platform_device *platformdev; /**< Platform device struture */ | |
dc5698e8 | 821 | struct virtio_device *virtdev; |
dcdb1674 | 822 | |
55910517 | 823 | struct drm_sg_mem *sg; /**< Scatter gather memory */ |
19227561 | 824 | unsigned int num_crtcs; /**< Number of CRTCs on this device */ |
b5e89ed5 DA |
825 | sigset_t sigmask; |
826 | ||
69d516c0 DH |
827 | struct { |
828 | int context; | |
829 | struct drm_hw_lock *lock; | |
830 | } sigdata; | |
831 | ||
f77d390c | 832 | struct drm_local_map *agp_buffer_map; |
d1f2b55a | 833 | unsigned int agp_buffer_token; |
bea5679f | 834 | |
417009fb | 835 | struct drm_mode_config mode_config; /**< Current mode config */ |
f453ba04 | 836 | |
673a394b EA |
837 | /** \name GEM information */ |
838 | /*@{ */ | |
cd4f013f | 839 | struct mutex object_name_lock; |
673a394b | 840 | struct idr object_name_idr; |
b04a5906 | 841 | struct drm_vma_offset_manager *vma_offset_manager; |
673a394b | 842 | /*@} */ |
5bcf719b | 843 | int switch_power_state; |
84b1fd10 | 844 | }; |
1da177e4 | 845 | |
5bcf719b DA |
846 | #define DRM_SWITCH_POWER_ON 0 |
847 | #define DRM_SWITCH_POWER_OFF 1 | |
848 | #define DRM_SWITCH_POWER_CHANGING 2 | |
13bb9cc8 | 849 | #define DRM_SWITCH_POWER_DYNAMIC_OFF 3 |
5bcf719b | 850 | |
b5e89ed5 DA |
851 | static __inline__ int drm_core_check_feature(struct drm_device *dev, |
852 | int feature) | |
1da177e4 LT |
853 | { |
854 | return ((dev->driver->driver_features & feature) ? 1 : 0); | |
855 | } | |
856 | ||
2c07a21d DA |
857 | static inline void drm_device_set_unplugged(struct drm_device *dev) |
858 | { | |
859 | smp_wmb(); | |
860 | atomic_set(&dev->unplugged, 1); | |
861 | } | |
862 | ||
863 | static inline int drm_device_is_unplugged(struct drm_device *dev) | |
864 | { | |
865 | int ret = atomic_read(&dev->unplugged); | |
866 | smp_rmb(); | |
867 | return ret; | |
868 | } | |
869 | ||
43683057 | 870 | static inline bool drm_is_render_client(const struct drm_file *file_priv) |
1793126f DH |
871 | { |
872 | return file_priv->minor->type == DRM_MINOR_RENDER; | |
873 | } | |
874 | ||
ac05dbc5 TH |
875 | static inline bool drm_is_control_client(const struct drm_file *file_priv) |
876 | { | |
877 | return file_priv->minor->type == DRM_MINOR_CONTROL; | |
878 | } | |
879 | ||
43683057 TH |
880 | static inline bool drm_is_primary_client(const struct drm_file *file_priv) |
881 | { | |
882 | return file_priv->minor->type == DRM_MINOR_LEGACY; | |
883 | } | |
884 | ||
1da177e4 LT |
885 | /******************************************************************/ |
886 | /** \name Internal function definitions */ | |
887 | /*@{*/ | |
888 | ||
1da177e4 | 889 | /* Driver support (drm_drv.h) */ |
ed8b6704 AB |
890 | extern long drm_ioctl(struct file *filp, |
891 | unsigned int cmd, unsigned long arg); | |
b5e89ed5 DA |
892 | extern long drm_compat_ioctl(struct file *filp, |
893 | unsigned int cmd, unsigned long arg); | |
4beb6d9f | 894 | extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags); |
1da177e4 LT |
895 | |
896 | /* Device support (drm_fops.h) */ | |
b5e89ed5 | 897 | extern int drm_open(struct inode *inode, struct file *filp); |
c9a9c5e0 KH |
898 | extern ssize_t drm_read(struct file *filp, char __user *buffer, |
899 | size_t count, loff_t *offset); | |
b5e89ed5 | 900 | extern int drm_release(struct inode *inode, struct file *filp); |
1da177e4 LT |
901 | |
902 | /* Mapping support (drm_vm.h) */ | |
b5e89ed5 | 903 | extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait); |
1da177e4 | 904 | |
78238757 DV |
905 | /* Misc. IOCTL support (drm_ioctl.c) */ |
906 | int drm_noop(struct drm_device *dev, void *data, | |
907 | struct drm_file *file_priv); | |
1da177e4 | 908 | |
673a394b EA |
909 | /* Cache management (drm_cache.c) */ |
910 | void drm_clflush_pages(struct page *pages[], unsigned long num_pages); | |
9da3da66 | 911 | void drm_clflush_sg(struct sg_table *st); |
c2d15359 | 912 | void drm_clflush_virt_range(void *addr, unsigned long length); |
673a394b | 913 | |
040ac320 TH |
914 | /* |
915 | * These are exported to drivers so that they can implement fencing using | |
916 | * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. | |
917 | */ | |
918 | ||
1da177e4 | 919 | /* IRQ support (drm_irq.h) */ |
bb0f1b5c | 920 | extern int drm_irq_install(struct drm_device *dev, int irq); |
84b1fd10 | 921 | extern int drm_irq_uninstall(struct drm_device *dev); |
b5e89ed5 | 922 | |
0a3e67a4 | 923 | extern int drm_vblank_init(struct drm_device *dev, int num_crtcs); |
af6061af | 924 | extern int drm_wait_vblank(struct drm_device *dev, void *data, |
0a3e67a4 | 925 | struct drm_file *filp); |
0a3e67a4 | 926 | extern u32 drm_vblank_count(struct drm_device *dev, int crtc); |
96d3f91e | 927 | extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc); |
27641c3f MK |
928 | extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc, |
929 | struct timeval *vblanktime); | |
c6eefa17 RC |
930 | extern void drm_send_vblank_event(struct drm_device *dev, int crtc, |
931 | struct drm_pending_vblank_event *e); | |
a4d7b30d TR |
932 | extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc, |
933 | struct drm_pending_vblank_event *e); | |
78c6e170 | 934 | extern bool drm_handle_vblank(struct drm_device *dev, int crtc); |
115ebcd4 | 935 | extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc); |
0a3e67a4 JB |
936 | extern int drm_vblank_get(struct drm_device *dev, int crtc); |
937 | extern void drm_vblank_put(struct drm_device *dev, int crtc); | |
89dd6a4b DV |
938 | extern int drm_crtc_vblank_get(struct drm_crtc *crtc); |
939 | extern void drm_crtc_vblank_put(struct drm_crtc *crtc); | |
e8450f51 DV |
940 | extern void drm_wait_one_vblank(struct drm_device *dev, int crtc); |
941 | extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc); | |
778c9026 | 942 | extern void drm_vblank_off(struct drm_device *dev, int crtc); |
f2752282 | 943 | extern void drm_vblank_on(struct drm_device *dev, int crtc); |
89dd6a4b | 944 | extern void drm_crtc_vblank_off(struct drm_crtc *crtc); |
9625604c | 945 | extern void drm_crtc_vblank_reset(struct drm_crtc *crtc); |
89dd6a4b | 946 | extern void drm_crtc_vblank_on(struct drm_crtc *crtc); |
52440211 | 947 | extern void drm_vblank_cleanup(struct drm_device *dev); |
89dd6a4b | 948 | |
27641c3f MK |
949 | extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, |
950 | int crtc, int *max_error, | |
951 | struct timeval *vblank_time, | |
952 | unsigned flags, | |
7da903ef VS |
953 | const struct drm_crtc *refcrtc, |
954 | const struct drm_display_mode *mode); | |
545cdd55 VS |
955 | extern void drm_calc_timestamping_constants(struct drm_crtc *crtc, |
956 | const struct drm_display_mode *mode); | |
27641c3f | 957 | |
020178a1 VS |
958 | /** |
959 | * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC | |
960 | * @crtc: which CRTC's vblank waitqueue to retrieve | |
961 | * | |
962 | * This function returns a pointer to the vblank waitqueue for the CRTC. | |
963 | * Drivers can use this to implement vblank waits using wait_event() & co. | |
964 | */ | |
965 | static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc) | |
966 | { | |
967 | return &crtc->dev->vblank[drm_crtc_index(crtc)].queue; | |
968 | } | |
ebc64e45 | 969 | |
0a3e67a4 | 970 | /* Modesetting support */ |
f453ba04 DA |
971 | extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc); |
972 | extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc); | |
1da177e4 | 973 | |
1da177e4 | 974 | /* Stub support (drm_stub.h) */ |
7c1c2871 DA |
975 | extern struct drm_master *drm_master_get(struct drm_master *master); |
976 | extern void drm_master_put(struct drm_master **master); | |
8410ea3b | 977 | |
112b715e | 978 | extern void drm_put_dev(struct drm_device *dev); |
2c07a21d | 979 | extern void drm_unplug_dev(struct drm_device *dev); |
b5e89ed5 | 980 | extern unsigned int drm_debug; |
88a48e29 | 981 | extern bool drm_atomic; |
2c14f28b | 982 | |
955b12de BG |
983 | /* Debugfs support */ |
984 | #if defined(CONFIG_DEBUG_FS) | |
7d74795b LD |
985 | extern int drm_debugfs_create_files(const struct drm_info_list *files, |
986 | int count, struct dentry *root, | |
987 | struct drm_minor *minor); | |
988 | extern int drm_debugfs_remove_files(const struct drm_info_list *files, | |
989 | int count, struct drm_minor *minor); | |
66ee52e2 | 990 | #else |
66ee52e2 TR |
991 | static inline int drm_debugfs_create_files(const struct drm_info_list *files, |
992 | int count, struct dentry *root, | |
993 | struct drm_minor *minor) | |
994 | { | |
995 | return 0; | |
996 | } | |
997 | ||
998 | static inline int drm_debugfs_remove_files(const struct drm_info_list *files, | |
999 | int count, struct drm_minor *minor) | |
1000 | { | |
1001 | return 0; | |
1002 | } | |
955b12de BG |
1003 | #endif |
1004 | ||
89177644 AP |
1005 | extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev, |
1006 | struct drm_gem_object *obj, int flags); | |
3248877e DA |
1007 | extern int drm_gem_prime_handle_to_fd(struct drm_device *dev, |
1008 | struct drm_file *file_priv, uint32_t handle, uint32_t flags, | |
1009 | int *prime_fd); | |
89177644 AP |
1010 | extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev, |
1011 | struct dma_buf *dma_buf); | |
3248877e DA |
1012 | extern int drm_gem_prime_fd_to_handle(struct drm_device *dev, |
1013 | struct drm_file *file_priv, int prime_fd, uint32_t *handle); | |
c1d6798d | 1014 | extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf); |
3248877e | 1015 | |
51ab7ba2 DA |
1016 | extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages, |
1017 | dma_addr_t *addrs, int max_pages); | |
34eab43e | 1018 | extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages); |
3248877e DA |
1019 | extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg); |
1020 | ||
1da177e4 | 1021 | |
ba8286fa DV |
1022 | extern struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size, |
1023 | size_t align); | |
1024 | extern void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah); | |
1da177e4 LT |
1025 | |
1026 | /* sysfs support (drm_sysfs.c) */ | |
f453ba04 | 1027 | extern void drm_sysfs_hotplug_event(struct drm_device *dev); |
1da177e4 | 1028 | |
673a394b | 1029 | |
1bb72532 DH |
1030 | struct drm_device *drm_dev_alloc(struct drm_driver *driver, |
1031 | struct device *parent); | |
099d1c29 DH |
1032 | void drm_dev_ref(struct drm_device *dev); |
1033 | void drm_dev_unref(struct drm_device *dev); | |
c22f0ace | 1034 | int drm_dev_register(struct drm_device *dev, unsigned long flags); |
c3a49737 | 1035 | void drm_dev_unregister(struct drm_device *dev); |
ca8e2ad7 | 1036 | int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...); |
1616c525 DH |
1037 | |
1038 | struct drm_minor *drm_minor_acquire(unsigned int minor_id); | |
1039 | void drm_minor_release(struct drm_minor *minor); | |
1040 | ||
8410ea3b DA |
1041 | /*@}*/ |
1042 | ||
1043 | /* PCI section */ | |
1044 | static __inline__ int drm_pci_device_is_agp(struct drm_device *dev) | |
1045 | { | |
b5e89ed5 DA |
1046 | if (dev->driver->device_is_agp != NULL) { |
1047 | int err = (*dev->driver->device_is_agp) (dev); | |
1048 | ||
cda17380 DA |
1049 | if (err != 2) { |
1050 | return err; | |
1051 | } | |
1052 | } | |
1053 | ||
1054 | return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP); | |
1055 | } | |
4efafebe | 1056 | void drm_pci_agp_destroy(struct drm_device *dev); |
cda17380 | 1057 | |
8410ea3b DA |
1058 | extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver); |
1059 | extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver); | |
a9e3c90c | 1060 | #ifdef CONFIG_PCI |
8410ea3b | 1061 | extern int drm_get_pci_dev(struct pci_dev *pdev, |
dcdb1674 JC |
1062 | const struct pci_device_id *ent, |
1063 | struct drm_driver *driver); | |
915b4d11 | 1064 | extern int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master); |
a9e3c90c TR |
1065 | #else |
1066 | static inline int drm_get_pci_dev(struct pci_dev *pdev, | |
1067 | const struct pci_device_id *ent, | |
1068 | struct drm_driver *driver) | |
1069 | { | |
1070 | return -ENOSYS; | |
1071 | } | |
1072 | ||
1073 | static inline int drm_pci_set_busid(struct drm_device *dev, | |
1074 | struct drm_master *master) | |
1075 | { | |
1076 | return -ENOSYS; | |
1077 | } | |
1078 | #endif | |
8410ea3b | 1079 | |
f4297784 DA |
1080 | #define DRM_PCIE_SPEED_25 1 |
1081 | #define DRM_PCIE_SPEED_50 2 | |
1082 | #define DRM_PCIE_SPEED_80 4 | |
1083 | ||
1084 | extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask); | |
8410ea3b DA |
1085 | |
1086 | /* platform section */ | |
1087 | extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device); | |
915b4d11 | 1088 | extern int drm_platform_set_busid(struct drm_device *d, struct drm_master *m); |
8410ea3b | 1089 | |
cc1f7194 DA |
1090 | /* returns true if currently okay to sleep */ |
1091 | static __inline__ bool drm_can_sleep(void) | |
1092 | { | |
1093 | if (in_atomic() || in_dbg_master() || irqs_disabled()) | |
1094 | return false; | |
1095 | return true; | |
1096 | } | |
1097 | ||
1da177e4 | 1098 | #endif |