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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
David Herrmannd7d2c482014-08-29 12:12:40 +02002 * Internal Header for the Direct Rendering Manager
3 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
Jordan Crousedcdb1672010-05-27 13:40:25 -06006 * Copyright (c) 2009-2010, Code Aurora Forum.
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * All rights reserved.
8 *
David Herrmannd7d2c482014-08-29 12:12:40 +02009 * Author: Rickard E. (Rik) Faith <faith@valinux.com>
10 * Author: Gareth Hughes <gareth@valinux.com>
11 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 * 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
David Herrmann96993902014-08-29 12:12:37 +020035#include <linux/agp_backend.h>
36#include <linux/cdev.h>
37#include <linux/dma-mapping.h>
38#include <linux/file.h>
39#include <linux/fs.h>
40#include <linux/highmem.h>
41#include <linux/idr.h>
42#include <linux/init.h>
43#include <linux/io.h>
44#include <linux/jiffies.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#include <linux/kernel.h>
David Herrmann099d1c22014-01-29 10:21:36 +010046#include <linux/kref.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#include <linux/miscdevice.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070048#include <linux/mm.h>
Dave Airlie30e2fb12006-02-02 19:37:46 +110049#include <linux/mutex.h>
David Herrmann96993902014-08-29 12:12:37 +020050#include <linux/pci.h>
51#include <linux/platform_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070052#include <linux/poll.h>
David Herrmann96993902014-08-29 12:12:37 +020053#include <linux/ratelimit.h>
54#include <linux/sched.h>
55#include <linux/slab.h>
56#include <linux/types.h>
David Herrmannd6db6562014-08-29 12:12:35 +020057#include <linux/vmalloc.h>
David Herrmann96993902014-08-29 12:12:37 +020058#include <linux/workqueue.h>
59
60#include <asm/mman.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070061#include <asm/pgalloc.h>
David Herrmann96993902014-08-29 12:12:37 +020062#include <asm/uaccess.h>
63
David Herrmannd7d2c482014-08-29 12:12:40 +020064#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>
David Herrmann96993902014-08-29 12:12:37 +020070#include <drm/drm_hashtab.h>
David Herrmannd7d2c482014-08-29 12:12:40 +020071#include <drm/drm_mem_util.h>
David Herrmann96993902014-08-29 12:12:37 +020072#include <drm/drm_mm.h>
73#include <drm/drm_os_linux.h>
David Howells19218e42012-10-02 18:01:03 +010074#include <drm/drm_sarea.h>
David Herrmann0de23972013-07-24 21:07:52 +020075#include <drm/drm_vma_manager.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
Paul Gortmakerde477252011-05-26 13:46:22 -040077struct module;
78
Eric Anholtc153f452007-09-03 12:06:45 +100079struct drm_file;
80struct drm_device;
David Herrmanncc5ea592014-08-29 12:12:32 +020081struct drm_agp_head;
Daniel Vetterba8286f2014-09-11 07:43:25 +020082struct drm_local_map;
83struct drm_device_dma;
84struct drm_dma_handle;
Daniel Vetterd9fc9412014-09-23 15:46:53 +020085struct drm_gem_object;
Eric Anholtc153f452007-09-03 12:06:45 +100086
Steffen Trumtraredb37a92012-10-28 18:28:06 +010087struct device_node;
Steffen Trumtrarebc64e42012-11-14 11:22:52 +010088struct videomode;
Maarten Lankhorst3aac4502014-07-01 12:57:26 +020089struct reservation_object;
Maarten Lankhorstb5e9c1a2014-01-09 11:03:14 +010090struct dma_buf_attachment;
Steffen Trumtrarebc64e42012-11-14 11:22:52 +010091
Lespiau, Damien1414b762014-03-24 15:53:08 +000092/*
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.
100 *
101 * KMS: used in the modesetting code.
102 * This is the category used by the DRM_DEBUG_KMS() macro.
103 *
104 * PRIME: used in the prime code.
105 * This is the category used by the DRM_DEBUG_PRIME() macro.
106 *
Daniel Vetter17a38d92015-02-22 12:24:16 +0100107 * ATOMIC: used in the atomic code.
108 * This is the category used by the DRM_DEBUG_ATOMIC() macro.
109 *
Ville Syrjälä235fabe2015-10-09 22:57:37 +0300110 * VBL: used for verbose debug message in the vblank code
111 * This is the category used by the DRM_DEBUG_VBL() macro.
112 *
Lespiau, Damien1414b762014-03-24 15:53:08 +0000113 * Enabling verbose debug messages is done through the drm.debug parameter,
114 * each category being enabled by a bit.
115 *
116 * drm.debug=0x1 will enable CORE messages
117 * drm.debug=0x2 will enable DRIVER messages
118 * drm.debug=0x3 will enable CORE and DRIVER messages
119 * ...
Ville Syrjälä235fabe2015-10-09 22:57:37 +0300120 * drm.debug=0x3f will enable all messages
Lespiau, Damien1414b762014-03-24 15:53:08 +0000121 *
122 * An interesting feature is that it's possible to enable verbose logging at
123 * run-time by echoing the debug value in its sysfs node:
124 * # echo 0xf > /sys/module/drm/parameters/debug
125 */
yakui_zhao4fefcb22009-06-02 14:09:47 +0800126#define DRM_UT_CORE 0x01
127#define DRM_UT_DRIVER 0x02
128#define DRM_UT_KMS 0x04
Dave Airlie32488772011-11-25 15:21:02 +0000129#define DRM_UT_PRIME 0x08
Daniel Vetter17a38d92015-02-22 12:24:16 +0100130#define DRM_UT_ATOMIC 0x10
Ville Syrjälä235fabe2015-10-09 22:57:37 +0300131#define DRM_UT_VBL 0x20
yakui_zhao4fefcb22009-06-02 14:09:47 +0800132
Lespiau, Damien1287aa92014-03-24 15:53:17 +0000133extern __printf(2, 3)
134void drm_ut_debug_printk(const char *function_name,
Joe Perchesb9075fa2011-10-31 17:11:33 -0700135 const char *format, ...);
Joe Perchesa1f1a792014-10-11 22:08:57 -0700136extern __printf(1, 2)
137void drm_err(const char *format, ...);
Joe Perches5ad3d882011-04-17 20:35:51 -0700138
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139/***********************************************************************/
140/** \name DRM template customization defaults */
141/*@{*/
142
143/* driver capabilities and requirements mask */
Peter Antoine0e975982015-06-23 08:18:49 +0100144#define DRIVER_USE_AGP 0x1
145#define DRIVER_PCI_DMA 0x8
146#define DRIVER_SG 0x10
147#define DRIVER_HAVE_DMA 0x20
148#define DRIVER_HAVE_IRQ 0x40
149#define DRIVER_IRQ_SHARED 0x80
150#define DRIVER_GEM 0x1000
151#define DRIVER_MODESET 0x2000
152#define DRIVER_PRIME 0x4000
153#define DRIVER_RENDER 0x8000
154#define DRIVER_ATOMIC 0x10000
155#define DRIVER_KMS_LEGACY_CONTEXT 0x20000
Dave Airlie8410ea32010-12-15 03:16:38 +1000156
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157/***********************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158/** \name Macros to make printk easier */
159/*@{*/
160
161/**
162 * Error output.
163 *
164 * \param fmt printf() like format string.
165 * \param arg arguments
166 */
Joe Perches5ad3d882011-04-17 20:35:51 -0700167#define DRM_ERROR(fmt, ...) \
Joe Perchesa1f1a792014-10-11 22:08:57 -0700168 drm_err(fmt, ##__VA_ARGS__)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169
Rob Clark5d13d422013-11-21 14:29:51 -0500170/**
171 * Rate limited error output. Like DRM_ERROR() but won't flood the log.
172 *
173 * \param fmt printf() like format string.
174 * \param arg arguments
175 */
176#define DRM_ERROR_RATELIMITED(fmt, ...) \
177({ \
178 static DEFINE_RATELIMIT_STATE(_rs, \
179 DEFAULT_RATELIMIT_INTERVAL, \
180 DEFAULT_RATELIMIT_BURST); \
181 \
182 if (__ratelimit(&_rs)) \
Joe Perchesa1f1a792014-10-11 22:08:57 -0700183 drm_err(fmt, ##__VA_ARGS__); \
Rob Clark5d13d422013-11-21 14:29:51 -0500184})
185
Joe Perches5ad3d882011-04-17 20:35:51 -0700186#define DRM_INFO(fmt, ...) \
187 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188
Jani Nikula48b8f632014-01-31 15:49:07 +0200189#define DRM_INFO_ONCE(fmt, ...) \
190 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
191
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192/**
193 * Debug output.
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000194 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 * \param fmt printf() like format string.
196 * \param arg arguments
197 */
yakui_zhao4fefcb22009-06-02 14:09:47 +0800198#define DRM_DEBUG(fmt, args...) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 do { \
Lespiau, Damiena73d4e92014-03-24 15:53:15 +0000200 if (unlikely(drm_debug & DRM_UT_CORE)) \
Lespiau, Damien1287aa92014-03-24 15:53:17 +0000201 drm_ut_debug_printk(__func__, fmt, ##args); \
yakui_zhao4fefcb22009-06-02 14:09:47 +0800202 } while (0)
203
Zhao Yakui8a4c47f2009-07-20 13:48:04 +0800204#define DRM_DEBUG_DRIVER(fmt, args...) \
yakui_zhao4fefcb22009-06-02 14:09:47 +0800205 do { \
Lespiau, Damiena73d4e92014-03-24 15:53:15 +0000206 if (unlikely(drm_debug & DRM_UT_DRIVER)) \
Lespiau, Damien1287aa92014-03-24 15:53:17 +0000207 drm_ut_debug_printk(__func__, fmt, ##args); \
yakui_zhao4fefcb22009-06-02 14:09:47 +0800208 } while (0)
Lespiau, Damiena73d4e92014-03-24 15:53:15 +0000209#define DRM_DEBUG_KMS(fmt, args...) \
yakui_zhao4fefcb22009-06-02 14:09:47 +0800210 do { \
Lespiau, Damiena73d4e92014-03-24 15:53:15 +0000211 if (unlikely(drm_debug & DRM_UT_KMS)) \
Lespiau, Damien1287aa92014-03-24 15:53:17 +0000212 drm_ut_debug_printk(__func__, fmt, ##args); \
yakui_zhao4fefcb22009-06-02 14:09:47 +0800213 } while (0)
Dave Airlie32488772011-11-25 15:21:02 +0000214#define DRM_DEBUG_PRIME(fmt, args...) \
215 do { \
Lespiau, Damiena73d4e92014-03-24 15:53:15 +0000216 if (unlikely(drm_debug & DRM_UT_PRIME)) \
Lespiau, Damien1287aa92014-03-24 15:53:17 +0000217 drm_ut_debug_printk(__func__, fmt, ##args); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218 } while (0)
Daniel Vetter17a38d92015-02-22 12:24:16 +0100219#define DRM_DEBUG_ATOMIC(fmt, args...) \
220 do { \
221 if (unlikely(drm_debug & DRM_UT_ATOMIC)) \
222 drm_ut_debug_printk(__func__, fmt, ##args); \
223 } while (0)
Ville Syrjälä235fabe2015-10-09 22:57:37 +0300224#define DRM_DEBUG_VBL(fmt, args...) \
225 do { \
226 if (unlikely(drm_debug & DRM_UT_VBL)) \
227 drm_ut_debug_printk(__func__, fmt, ##args); \
228 } while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230/*@}*/
231
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232/***********************************************************************/
233/** \name Internal types and structures */
234/*@{*/
235
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236#define DRM_IF_VERSION(maj, min) (maj << 16 | min)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237
238/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 * Ioctl function type.
240 *
241 * \param inode device inode.
Eric Anholt6c340ea2007-08-25 20:23:09 +1000242 * \param file_priv DRM file private pointer.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 * \param cmd command.
244 * \param arg argument.
245 */
Eric Anholtc153f452007-09-03 12:06:45 +1000246typedef int drm_ioctl_t(struct drm_device *dev, void *data,
247 struct drm_file *file_priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248
Dave Airlie9a186642005-06-23 21:29:18 +1000249typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
250 unsigned long arg);
251
Kristian Høgsberg1a959162009-12-02 12:13:48 -0500252#define DRM_IOCTL_NR(n) _IOC_NR(n)
253#define DRM_MAJOR 226
254
Dave Airliea7a2cc32006-01-02 13:54:04 +1100255#define DRM_AUTH 0x1
256#define DRM_MASTER 0x2
257#define DRM_ROOT_ONLY 0x4
Dave Airlief453ba02008-11-07 14:05:41 -0800258#define DRM_CONTROL_ALLOW 0x8
Arnd Bergmanned8b6702009-12-16 22:17:09 +0000259#define DRM_UNLOCKED 0x10
David Herrmann17931262013-08-25 18:29:00 +0200260#define DRM_RENDER_ALLOW 0x20
Dave Airliea7a2cc32006-01-02 13:54:04 +1100261
Eric Anholtc153f452007-09-03 12:06:45 +1000262struct drm_ioctl_desc {
263 unsigned int cmd;
Dave Airliea7a2cc32006-01-02 13:54:04 +1100264 int flags;
Richard Kennedyc972d752009-03-18 17:26:44 +0000265 drm_ioctl_t *func;
Chris Cumminsb9434d02013-05-09 14:20:40 +0100266 const char *name;
Eric Anholtc153f452007-09-03 12:06:45 +1000267};
268
269/**
270 * Creates a driver or general drm_ioctl_desc array entry for the given
271 * ioctl, for use by drm_ioctl().
272 */
Dave Airlie1b2f1482010-08-14 20:20:34 +1000273
Emil Velikov066626d2015-03-30 17:10:36 +0000274#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
275 [DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = { \
276 .cmd = DRM_IOCTL_##ioctl, \
277 .func = _func, \
278 .flags = _flags, \
279 .name = #ioctl \
280 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281
Kristian Høgsbergc9a9c5e2009-09-12 04:33:34 +1000282/* Event queued up for userspace to read */
283struct drm_pending_event {
284 struct drm_event *event;
285 struct list_head link;
286 struct drm_file *file_priv;
Jesse Barnesb9c2c9a2010-07-01 16:48:09 -0700287 pid_t pid; /* pid of requester, no guarantee it's valid by the time
288 we deliver the event, for tracing only */
Kristian Høgsbergc9a9c5e2009-09-12 04:33:34 +1000289 void (*destroy)(struct drm_pending_event *event);
290};
291
Dave Airlie32488772011-11-25 15:21:02 +0000292/* initial implementaton using a linked list - todo hashtab */
293struct drm_prime_file_private {
294 struct list_head head;
295 struct mutex lock;
296};
297
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298/** File private data */
Dave Airlie84b1fd12007-07-11 15:53:27 +1000299struct drm_file {
Chris Wilson39868bd2013-10-29 08:55:58 +0000300 unsigned authenticated :1;
Thomas Hellstromc996fd02014-02-25 19:57:44 +0100301 /* Whether we're master for a minor. Protected by master_mutex */
302 unsigned is_master :1;
Chris Wilson39868bd2013-10-29 08:55:58 +0000303 /* true when the client has asked us to expose stereo 3D mode flags */
304 unsigned stereo_allowed :1;
Matt Roper681e7ec2014-04-01 15:22:42 -0700305 /*
306 * true if client understands CRTC primary planes and cursor planes
307 * in the plane list
308 */
309 unsigned universal_planes:1;
Rob Clark88a48e22014-12-18 16:01:50 -0500310 /* true if client understands atomic properties */
311 unsigned atomic:1;
Thomas Hellstroma0af2e52015-12-02 09:24:46 -0800312 /*
313 * This client is allowed to gain master privileges for @master.
314 * Protected by struct drm_device::master_mutex.
315 */
316 unsigned allowed_master:1;
Chris Wilson39868bd2013-10-29 08:55:58 +0000317
Eric W. Biederman5fce5e02012-02-07 16:47:26 -0800318 struct pid *pid;
319 kuid_t uid;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000320 drm_magic_t magic;
Dave Airliebd1b3312007-05-26 05:01:51 +1000321 struct list_head lhead;
Dave Airlie2c14f282008-04-21 16:47:32 +1000322 struct drm_minor *minor;
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000323 unsigned long lock_count;
Dave Airlie7c1c2872008-11-28 14:22:24 +1000324
Eric Anholt673a3942008-07-30 12:06:12 -0700325 /** Mapping of mm object handles to object pointers. */
326 struct idr object_idr;
327 /** Lock for synchronization of access to object_idr. */
328 spinlock_t table_lock;
Dave Airlie7c1c2872008-11-28 14:22:24 +1000329
Eric Anholt6c340ea2007-08-25 20:23:09 +1000330 struct file *filp;
Dave Airlie8562b3f2007-11-05 12:37:41 +1000331 void *driver_priv;
Dave Airlie7c1c2872008-11-28 14:22:24 +1000332
Dave Airlie7c1c2872008-11-28 14:22:24 +1000333 struct drm_master *master; /* master this node is currently associated with
334 N.B. not always minor->master */
Daniel Vetter4b096ac2012-12-10 21:19:18 +0100335 /**
336 * fbs - List of framebuffers associated with this file.
337 *
338 * Protected by fbs_lock. Note that the fbs list holds a reference on
339 * the fb object to prevent it from untimely disappearing.
340 */
Dave Airlief453ba02008-11-07 14:05:41 -0800341 struct list_head fbs;
Daniel Vetter4b096ac2012-12-10 21:19:18 +0100342 struct mutex fbs_lock;
Kristian Høgsbergc9a9c5e2009-09-12 04:33:34 +1000343
Daniel Stonee2f5d2e2015-05-22 13:34:51 +0100344 /** User-created blob properties; this retains a reference on the
345 * property. */
346 struct list_head blobs;
347
Kristian Høgsbergc9a9c5e2009-09-12 04:33:34 +1000348 wait_queue_head_t event_wait;
349 struct list_head event_list;
350 int event_space;
Dave Airlie32488772011-11-25 15:21:02 +0000351
Chris Wilson9b2c0b72015-11-25 14:39:03 +0000352 struct mutex event_read_lock;
353
Dave Airlie32488772011-11-25 15:21:02 +0000354 struct drm_prime_file_private prime;
Dave Airlie84b1fd12007-07-11 15:53:27 +1000355};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357/**
358 * Lock data.
359 */
Dave Airlie55910512007-07-11 16:53:40 +1000360struct drm_lock_data {
Dave Airliec60ce622007-07-11 15:27:12 +1000361 struct drm_hw_lock *hw_lock; /**< Hardware lock */
Dave Airlie8562b3f2007-11-05 12:37:41 +1000362 /** Private of lock holder's file (NULL=kernel) */
363 struct drm_file *file_priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 wait_queue_head_t lock_queue; /**< Queue of blocked processes */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000365 unsigned long lock_time; /**< Time of last lock in jiffies */
Thomas Hellstrom040ac322007-03-23 13:28:33 +1100366 spinlock_t spinlock;
367 uint32_t kernel_waiters;
368 uint32_t user_waiters;
369 int idle_has_lock;
Dave Airlie55910512007-07-11 16:53:40 +1000370};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371
372/**
Thomas Hellstromc996fd02014-02-25 19:57:44 +0100373 * struct drm_master - drm master structure
374 *
375 * @refcount: Refcount for this master object.
376 * @minor: Link back to minor char device we are master for. Immutable.
377 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
378 * @unique_len: Length of unique field. Protected by drm_global_mutex.
David Herrmann32e7b942015-05-04 21:01:30 +0200379 * @magic_map: Map of used authentication tokens. Protected by struct_mutex.
Thomas Hellstromc996fd02014-02-25 19:57:44 +0100380 * @lock: DRI lock information.
381 * @driver_priv: Pointer to driver-private information.
382 */
Dave Airlie7c1c2872008-11-28 14:22:24 +1000383struct drm_master {
Thomas Hellstromc996fd02014-02-25 19:57:44 +0100384 struct kref refcount;
385 struct drm_minor *minor;
386 char *unique;
387 int unique_len;
David Herrmann32e7b942015-05-04 21:01:30 +0200388 struct idr magic_map;
Thomas Hellstromc996fd02014-02-25 19:57:44 +0100389 struct drm_lock_data lock;
390 void *driver_priv;
Dave Airlie7c1c2872008-11-28 14:22:24 +1000391};
392
Mario Kleiner27641c32010-10-23 04:20:23 +0200393/* Size of ringbuffer for vblank timestamps. Just double-buffer
394 * in initial implementation.
395 */
396#define DRM_VBLANKTIME_RBSIZE 2
397
398/* Flags and return codes for get_vblank_timestamp() driver function. */
399#define DRM_CALLED_FROM_VBLIRQ 1
400#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
Daniel Vetter3d3cbd82014-09-10 17:36:11 +0200401#define DRM_VBLANKTIME_IN_VBLANK (1 << 1)
Mario Kleiner27641c32010-10-23 04:20:23 +0200402
403/* get_scanout_position() return flags */
404#define DRM_SCANOUTPOS_VALID (1 << 0)
Daniel Vetter3d3cbd82014-09-10 17:36:11 +0200405#define DRM_SCANOUTPOS_IN_VBLANK (1 << 1)
Mario Kleiner27641c32010-10-23 04:20:23 +0200406#define DRM_SCANOUTPOS_ACCURATE (1 << 2)
407
Eric Anholt673a3942008-07-30 12:06:12 -0700408/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 * DRM driver structure. This structure represent the common code for
410 * a family of cards. There will one drm_device for each card present
411 * in this family
412 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413struct drm_driver {
Dave Airlie22eae942005-11-10 22:16:34 +1100414 int (*load) (struct drm_device *, unsigned long flags);
415 int (*firstopen) (struct drm_device *);
Dave Airlie84b1fd12007-07-11 15:53:27 +1000416 int (*open) (struct drm_device *, struct drm_file *);
Eric Anholt6c340ea2007-08-25 20:23:09 +1000417 void (*preclose) (struct drm_device *, struct drm_file *file_priv);
Dave Airlie84b1fd12007-07-11 15:53:27 +1000418 void (*postclose) (struct drm_device *, struct drm_file *);
Dave Airlie22eae942005-11-10 22:16:34 +1100419 void (*lastclose) (struct drm_device *);
420 int (*unload) (struct drm_device *);
Dave Airlieb932ccb2008-02-20 10:02:20 +1000421 int (*suspend) (struct drm_device *, pm_message_t state);
Jesse Barnese8b962b2007-11-22 14:02:38 +1000422 int (*resume) (struct drm_device *);
Eric Anholtc153f452007-09-03 12:06:45 +1000423 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000424 int (*dma_quiescent) (struct drm_device *);
Dave Airlie84b1fd12007-07-11 15:53:27 +1000425 int (*context_dtor) (struct drm_device *dev, int context);
David Herrmann915b4d12014-08-29 12:12:43 +0200426 int (*set_busid)(struct drm_device *dev, struct drm_master *master);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000427
Dave Airliecda17382005-07-10 17:31:26 +1000428 /**
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700429 * get_vblank_counter - get raw hardware vblank counter
430 * @dev: DRM device
Thierry Reding88e72712015-09-24 18:35:31 +0200431 * @pipe: counter to fetch
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700432 *
Laurent Pinchart3b02ab82012-05-17 13:27:20 +0200433 * Driver callback for fetching a raw hardware vblank counter for @crtc.
434 * If a device doesn't have a hardware counter, the driver can simply
435 * return the value of drm_vblank_count. The DRM core will account for
436 * missed vblank events while interrupts where disabled based on system
437 * timestamps.
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700438 *
439 * Wraparound handling and loss of events due to modesetting is dealt
440 * with in the DRM core code.
441 *
442 * RETURNS
443 * Raw vblank counter value.
444 */
Thierry Reding88e72712015-09-24 18:35:31 +0200445 u32 (*get_vblank_counter) (struct drm_device *dev, unsigned int pipe);
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700446
447 /**
448 * enable_vblank - enable vblank interrupt events
449 * @dev: DRM device
Thierry Reding88e72712015-09-24 18:35:31 +0200450 * @pipe: which irq to enable
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700451 *
452 * Enable vblank interrupts for @crtc. If the device doesn't have
453 * a hardware vblank counter, this routine should be a no-op, since
454 * interrupts will have to stay on to keep the count accurate.
455 *
456 * RETURNS
457 * Zero on success, appropriate errno if the given @crtc's vblank
458 * interrupt cannot be enabled.
459 */
Thierry Reding88e72712015-09-24 18:35:31 +0200460 int (*enable_vblank) (struct drm_device *dev, unsigned int pipe);
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700461
462 /**
463 * disable_vblank - disable vblank interrupt events
464 * @dev: DRM device
Thierry Reding88e72712015-09-24 18:35:31 +0200465 * @pipe: which irq to enable
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700466 *
467 * Disable vblank interrupts for @crtc. If the device doesn't have
468 * a hardware vblank counter, this routine should be a no-op, since
469 * interrupts will have to stay on to keep the count accurate.
470 */
Thierry Reding88e72712015-09-24 18:35:31 +0200471 void (*disable_vblank) (struct drm_device *dev, unsigned int pipe);
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700472
473 /**
Dave Airliecda17382005-07-10 17:31:26 +1000474 * Called by \c drm_device_is_agp. Typically used to determine if a
475 * card is really attached to AGP or not.
476 *
477 * \param dev DRM device handle
478 *
479 * \returns
480 * One of three values is returned depending on whether or not the
481 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
482 * (return of 1), or may or may not be AGP (return of 2).
483 */
Dave Airlie84b1fd12007-07-11 15:53:27 +1000484 int (*device_is_agp) (struct drm_device *dev);
Dave Airliecda17382005-07-10 17:31:26 +1000485
Mario Kleiner27641c32010-10-23 04:20:23 +0200486 /**
487 * Called by vblank timestamping code.
488 *
Mario Kleiner8f6fce02013-10-30 05:13:06 +0100489 * Return the current display scanout position from a crtc, and an
490 * optional accurate ktime_get timestamp of when position was measured.
Mario Kleiner27641c32010-10-23 04:20:23 +0200491 *
492 * \param dev DRM device.
Thierry Reding88e72712015-09-24 18:35:31 +0200493 * \param pipe Id of the crtc to query.
Ville Syrjäläabca9e42013-10-28 20:50:48 +0200494 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
Mario Kleiner27641c32010-10-23 04:20:23 +0200495 * \param *vpos Target location for current vertical scanout position.
496 * \param *hpos Target location for current horizontal scanout position.
Mario Kleiner8f6fce02013-10-30 05:13:06 +0100497 * \param *stime Target location for timestamp taken immediately before
498 * scanout position query. Can be NULL to skip timestamp.
499 * \param *etime Target location for timestamp taken immediately after
500 * scanout position query. Can be NULL to skip timestamp.
Ville Syrjälä3bb403b2015-09-14 22:43:44 +0300501 * \param mode Current display timings.
Mario Kleiner27641c32010-10-23 04:20:23 +0200502 *
503 * Returns vpos as a positive number while in active scanout area.
504 * Returns vpos as a negative number inside vblank, counting the number
505 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
506 * until start of active scanout / end of vblank."
507 *
508 * \return Flags, or'ed together as follows:
509 *
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300510 * DRM_SCANOUTPOS_VALID = Query successful.
Mario Kleiner27641c32010-10-23 04:20:23 +0200511 * DRM_SCANOUTPOS_INVBL = Inside vblank.
512 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
513 * this flag means that returned position may be offset by a constant
514 * but unknown small number of scanlines wrt. real scanout position.
515 *
516 */
Thierry Reding88e72712015-09-24 18:35:31 +0200517 int (*get_scanout_position) (struct drm_device *dev, unsigned int pipe,
518 unsigned int flags, int *vpos, int *hpos,
Ville Syrjälä3bb403b2015-09-14 22:43:44 +0300519 ktime_t *stime, ktime_t *etime,
520 const struct drm_display_mode *mode);
Mario Kleiner27641c32010-10-23 04:20:23 +0200521
522 /**
523 * Called by \c drm_get_last_vbltimestamp. Should return a precise
524 * timestamp when the most recent VBLANK interval ended or will end.
525 *
526 * Specifically, the timestamp in @vblank_time should correspond as
527 * closely as possible to the time when the first video scanline of
528 * the video frame after the end of VBLANK will start scanning out,
Justin P. Mattock42b2aa82011-11-28 20:31:00 -0800529 * the time immediately after end of the VBLANK interval. If the
Mario Kleiner27641c32010-10-23 04:20:23 +0200530 * @crtc is currently inside VBLANK, this will be a time in the future.
531 * If the @crtc is currently scanning out a frame, this will be the
532 * past start time of the current scanout. This is meant to adhere
533 * to the OpenML OML_sync_control extension specification.
534 *
535 * \param dev dev DRM device handle.
Thierry Reding88e72712015-09-24 18:35:31 +0200536 * \param pipe crtc for which timestamp should be returned.
Mario Kleiner27641c32010-10-23 04:20:23 +0200537 * \param *max_error Maximum allowable timestamp error in nanoseconds.
538 * Implementation should strive to provide timestamp
539 * with an error of at most *max_error nanoseconds.
540 * Returns true upper bound on error for timestamp.
541 * \param *vblank_time Target location for returned vblank timestamp.
542 * \param flags 0 = Defaults, no special treatment needed.
543 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
544 * irq handler. Some drivers need to apply some workarounds
545 * for gpu-specific vblank irq quirks if flag is set.
546 *
547 * \returns
548 * Zero if timestamping isn't supported in current display mode or a
549 * negative number on failure. A positive status code on success,
550 * which describes how the vblank_time timestamp was computed.
551 */
Thierry Reding88e72712015-09-24 18:35:31 +0200552 int (*get_vblank_timestamp) (struct drm_device *dev, unsigned int pipe,
Mario Kleiner27641c32010-10-23 04:20:23 +0200553 int *max_error,
554 struct timeval *vblank_time,
555 unsigned flags);
556
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557 /* these have to be filled in */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000558
Daniel Vettere9f0d762013-12-11 11:34:42 +0100559 irqreturn_t(*irq_handler) (int irq, void *arg);
Dave Airlie84b1fd12007-07-11 15:53:27 +1000560 void (*irq_preinstall) (struct drm_device *dev);
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700561 int (*irq_postinstall) (struct drm_device *dev);
Dave Airlie84b1fd12007-07-11 15:53:27 +1000562 void (*irq_uninstall) (struct drm_device *dev);
Dave Airlie22eae942005-11-10 22:16:34 +1100563
Dave Airlie7c1c2872008-11-28 14:22:24 +1000564 /* Master routines */
565 int (*master_create)(struct drm_device *dev, struct drm_master *master);
566 void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
Thomas Hellstrom862302f2009-12-02 18:15:25 +0000567 /**
568 * master_set is called whenever the minor master is set.
569 * master_drop is called whenever the minor master is dropped.
570 */
571
572 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
573 bool from_open);
574 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
575 bool from_release);
Dave Airlie7c1c2872008-11-28 14:22:24 +1000576
Ben Gamari955b12d2009-02-17 20:08:49 -0500577 int (*debugfs_init)(struct drm_minor *minor);
578 void (*debugfs_cleanup)(struct drm_minor *minor);
Eric Anholt673a3942008-07-30 12:06:12 -0700579
580 /**
581 * Driver-specific constructor for drm_gem_objects, to set up
582 * obj->driver_private.
583 *
584 * Returns 0 on success.
585 */
Eric Anholt673a3942008-07-30 12:06:12 -0700586 void (*gem_free_object) (struct drm_gem_object *obj);
Ben Skeggs304eda32011-06-09 00:24:59 +0000587 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
588 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
Eric Anholt673a3942008-07-30 12:06:12 -0700589
Eric Anholt10028c52015-11-30 10:55:13 -0800590 /**
591 * Hook for allocating the GEM object struct, for use by core
592 * helpers.
593 */
594 struct drm_gem_object *(*gem_create_object)(struct drm_device *dev,
595 size_t size);
596
Dave Airlie32488772011-11-25 15:21:02 +0000597 /* prime: */
598 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
599 int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
600 uint32_t handle, uint32_t flags, int *prime_fd);
601 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
602 int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
603 int prime_fd, uint32_t *handle);
604 /* export GEM -> dmabuf */
605 struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
606 struct drm_gem_object *obj, int flags);
607 /* import dmabuf -> GEM */
608 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
609 struct dma_buf *dma_buf);
Aaron Plattner89177642013-01-15 20:47:42 +0000610 /* low-level interface used by drm_gem_prime_{import,export} */
611 int (*gem_prime_pin)(struct drm_gem_object *obj);
Maarten Lankhorst102d6db2013-04-09 09:18:44 +0200612 void (*gem_prime_unpin)(struct drm_gem_object *obj);
Maarten Lankhorst3aac4502014-07-01 12:57:26 +0200613 struct reservation_object * (*gem_prime_res_obj)(
614 struct drm_gem_object *obj);
Aaron Plattner89177642013-01-15 20:47:42 +0000615 struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj);
616 struct drm_gem_object *(*gem_prime_import_sg_table)(
Maarten Lankhorstb5e9c1a2014-01-09 11:03:14 +0100617 struct drm_device *dev,
618 struct dma_buf_attachment *attach,
Aaron Plattner89177642013-01-15 20:47:42 +0000619 struct sg_table *sgt);
620 void *(*gem_prime_vmap)(struct drm_gem_object *obj);
621 void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr);
Joonyoung Shim7c397cd2013-06-28 14:24:53 +0900622 int (*gem_prime_mmap)(struct drm_gem_object *obj,
623 struct vm_area_struct *vma);
Dave Airlie32488772011-11-25 15:21:02 +0000624
Dave Airlie28d52042009-09-21 14:33:58 +1000625 /* vga arb irq handler */
626 void (*vgaarb_irq)(struct drm_device *dev, bool state);
627
Dave Airlieff72145b2011-02-07 12:16:14 +1000628 /* dumb alloc support */
629 int (*dumb_create)(struct drm_file *file_priv,
630 struct drm_device *dev,
631 struct drm_mode_create_dumb *args);
632 int (*dumb_map_offset)(struct drm_file *file_priv,
633 struct drm_device *dev, uint32_t handle,
634 uint64_t *offset);
635 int (*dumb_destroy)(struct drm_file *file_priv,
636 struct drm_device *dev,
637 uint32_t handle);
638
Jesse Barnesa2c0a972008-11-05 10:31:53 -0800639 /* Driver private ops for this object */
Laurent Pinchart78b68552012-05-17 13:27:22 +0200640 const struct vm_operations_struct *gem_vm_ops;
Jesse Barnesa2c0a972008-11-05 10:31:53 -0800641
Dave Airlie22eae942005-11-10 22:16:34 +1100642 int major;
643 int minor;
644 int patchlevel;
645 char *name;
646 char *desc;
647 char *date;
648
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649 u32 driver_features;
650 int dev_priv_size;
Rob Clarkbaa70942013-08-02 13:27:49 -0400651 const struct drm_ioctl_desc *ioctls;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652 int num_ioctls;
Arjan van de Vene08e96d2011-10-31 07:28:57 -0700653 const struct file_operations *fops;
Dave Airlie8410ea32010-12-15 03:16:38 +1000654
Daniel Vetterb3f23332013-12-11 11:34:31 +0100655 /* List of devices hanging off this driver with stealth attach. */
656 struct list_head legacy_dev_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657};
658
David Herrmanncb8a2392014-01-29 12:31:40 +0100659enum drm_minor_type {
660 DRM_MINOR_LEGACY,
661 DRM_MINOR_CONTROL,
662 DRM_MINOR_RENDER,
663 DRM_MINOR_CNT,
664};
Dave Airlie2c14f282008-04-21 16:47:32 +1000665
Ben Gamari955b12d2009-02-17 20:08:49 -0500666/**
667 * Info file list entry. This structure represents a debugfs or proc file to
668 * be created by the drm core
669 */
670struct drm_info_list {
671 const char *name; /** file name */
672 int (*show)(struct seq_file*, void*); /** show callback */
673 u32 driver_features; /**< Required driver features for this entry */
674 void *data;
675};
676
677/**
678 * debugfs node structure. This structure represents a debugfs file.
679 */
680struct drm_info_node {
681 struct list_head list;
682 struct drm_minor *minor;
David Howellsce089b52013-04-12 15:23:25 +0100683 const struct drm_info_list *info_ent;
Ben Gamari955b12d2009-02-17 20:08:49 -0500684 struct dentry *dent;
685};
686
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687/**
Dave Airlie2c14f282008-04-21 16:47:32 +1000688 * DRM minor structure. This structure represents a drm minor number.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689 */
Dave Airlie2c14f282008-04-21 16:47:32 +1000690struct drm_minor {
691 int index; /**< Minor device number */
692 int type; /**< Control or render */
Dave Airlie5bdebb12013-10-11 14:07:25 +1000693 struct device *kdev; /**< Linux device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 struct drm_device *dev;
Ben Gamari955b12d2009-02-17 20:08:49 -0500695
Ben Gamari955b12d2009-02-17 20:08:49 -0500696 struct dentry *debugfs_root;
Marcin Slusarzb3e067c2011-11-09 22:20:35 +0100697
698 struct list_head debugfs_list;
699 struct mutex debugfs_lock; /* Protects debugfs_list. */
Ben Gamari955b12d2009-02-17 20:08:49 -0500700
Thomas Hellstromc996fd02014-02-25 19:57:44 +0100701 /* currently active master for this node. Protected by master_mutex */
702 struct drm_master *master;
Dave Airlie84b1fd12007-07-11 15:53:27 +1000703};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704
Chris Wilson1794d252011-04-17 07:43:32 +0100705
Kristian Høgsbergc9a9c5e2009-09-12 04:33:34 +1000706struct drm_pending_vblank_event {
707 struct drm_pending_event base;
Thierry Redingcc1ef112015-08-12 17:00:31 +0200708 unsigned int pipe;
Kristian Høgsbergc9a9c5e2009-09-12 04:33:34 +1000709 struct drm_event_vblank event;
710};
711
Ville Syrjälä5380e922013-10-04 14:53:36 +0300712struct drm_vblank_crtc {
Ville Syrjäläe69595c2014-02-19 19:36:08 +0200713 struct drm_device *dev; /* pointer to the drm_device */
Ville Syrjälä5380e922013-10-04 14:53:36 +0300714 wait_queue_head_t queue; /**< VBLANK wait queue */
Ville Syrjäläe69595c2014-02-19 19:36:08 +0200715 struct timer_list disable_timer; /* delayed disable timer */
Daniel Vetter99264a62015-04-15 19:34:43 +0200716
717 /* vblank counter, protected by dev->vblank_time_lock for writes */
Daniel Vetter209e4dbc2015-08-07 12:31:17 +0200718 u32 count;
Daniel Vetter99264a62015-04-15 19:34:43 +0200719 /* vblank timestamps, protected by dev->vblank_time_lock for writes */
720 struct timeval time[DRM_VBLANKTIME_RBSIZE];
721
Ville Syrjälä5380e922013-10-04 14:53:36 +0300722 atomic_t refcount; /* number of users of vblank interruptsper crtc */
723 u32 last; /* protected by dev->vbl_lock, used */
724 /* for wraparound handling */
725 u32 last_wait; /* Last vblank seqno waited per CRTC */
726 unsigned int inmodeset; /* Display driver is setting mode */
Thierry Redingcc1ef112015-08-12 17:00:31 +0200727 unsigned int pipe; /* crtc index */
Ville Syrjäläeba1f352015-09-14 22:43:43 +0300728 int framedur_ns; /* frame/field duration in ns */
729 int linedur_ns; /* line duration in ns */
Ville Syrjälä5380e922013-10-04 14:53:36 +0300730 bool enabled; /* so we don't call enable more than
731 once per disable */
732};
733
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734/**
735 * DRM device structure. This structure represent a complete card that
736 * may contain multiple heads.
737 */
Dave Airlie84b1fd12007-07-11 15:53:27 +1000738struct drm_device {
Daniel Vetterb3f23332013-12-11 11:34:31 +0100739 struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000740 int if_version; /**< Highest interface version set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741
David Herrmann45e212d2014-01-28 16:00:35 +0100742 /** \name Lifetime Management */
743 /*@{ */
David Herrmann099d1c22014-01-29 10:21:36 +0100744 struct kref ref; /**< Object ref-count */
David Herrmann45e212d2014-01-28 16:00:35 +0100745 struct device *dev; /**< Device structure of bus-device */
746 struct drm_driver *driver; /**< DRM driver managing the device */
747 void *dev_private; /**< DRM driver private data */
David Herrmann45e212d2014-01-28 16:00:35 +0100748 struct drm_minor *control; /**< Control node */
749 struct drm_minor *primary; /**< Primary node */
750 struct drm_minor *render; /**< Render node */
751 atomic_t unplugged; /**< Flag whether dev is dead */
David Herrmann07b48c32014-03-16 13:13:51 +0100752 struct inode *anon_inode; /**< inode for private address-space */
Thierry Redingca8e2ad2014-04-11 15:23:00 +0200753 char *unique; /**< unique name of the device */
David Herrmann45e212d2014-01-28 16:00:35 +0100754 /*@} */
755
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756 /** \name Locks */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000757 /*@{ */
Dave Airlie30e2fb12006-02-02 19:37:46 +1100758 struct mutex struct_mutex; /**< For others */
Thomas Hellstromc996fd02014-02-25 19:57:44 +0100759 struct mutex master_mutex; /**< For drm_minor::master and drm_file::is_master */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000760 /*@} */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761
762 /** \name Usage Counters */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000763 /*@{ */
Daniel Vetterfc8fd402013-11-03 20:46:34 +0100764 int open_count; /**< Outstanding files open, protected by drm_global_mutex. */
Daniel Vetter2177a212013-12-16 11:21:06 +0100765 spinlock_t buf_lock; /**< For drm_device::buf_use and a few other things. */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000766 int buf_use; /**< Buffers in use -- cannot alloc */
767 atomic_t buf_alloc; /**< Buffer allocation in progress */
768 /*@} */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769
Dave Airliebd1b3312007-05-26 05:01:51 +1000770 struct list_head filelist;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771
772 /** \name Memory management */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000773 /*@{ */
Dave Airliebd1b3312007-05-26 05:01:51 +1000774 struct list_head maplist; /**< Linked list of regions */
Dave Airliee0be4282007-07-12 10:26:44 +1000775 struct drm_open_hash map_hash; /**< User token hash table for maps */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776
777 /** \name Context handle management */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000778 /*@{ */
Dave Airliebd1b3312007-05-26 05:01:51 +1000779 struct list_head ctxlist; /**< Linked list of context handles */
Dave Airlie30e2fb12006-02-02 19:37:46 +1100780 struct mutex ctxlist_mutex; /**< For ctxlist */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781
Dave Airlie62968142007-07-17 10:46:52 +1000782 struct idr ctx_idr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783
Dave Airliebd1b3312007-05-26 05:01:51 +1000784 struct list_head vmalist; /**< List of vmas (for debugging) */
Dave Airlief453ba02008-11-07 14:05:41 -0800785
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000786 /*@} */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787
Daniel Vettera344a7e2011-10-26 00:54:41 +0200788 /** \name DMA support */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000789 /*@{ */
Dave Airliecdd55a22007-07-11 16:32:08 +1000790 struct drm_device_dma *dma; /**< Optional pointer for DMA support */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000791 /*@} */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792
793 /** \name Context support */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000794 /*@{ */
Daniel Vetter7c1a38e2013-12-16 11:21:15 +0100795
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796 __volatile__ long context_flag; /**< Context swapping flag */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000797 int last_context; /**< Last current context */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000798 /*@} */
799
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800 /** \name VBLANK IRQ support */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000801 /*@{ */
Thierry Redingb46004b2014-12-17 16:41:41 +0100802 bool irq_enabled;
803 int irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700805 /*
806 * At load time, disabling the vblank interrupt won't be allowed since
807 * old clients may not call the modeset ioctl and therefore misbehave.
808 * Once the modeset ioctl *has* been called though, we can safely
809 * disable them when unused.
810 */
Ville Syrjäläba0bf122013-10-04 14:53:33 +0300811 bool vblank_disable_allowed;
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700812
Ville Syrjälä00185e62014-08-06 14:49:54 +0300813 /*
814 * If true, vblank interrupt will be disabled immediately when the
815 * refcount drops to zero, as opposed to via the vblank disable
816 * timer.
817 * This can be set to true it the hardware has a working vblank
818 * counter and the driver uses drm_vblank_on() and drm_vblank_off()
819 * appropriately.
820 */
821 bool vblank_disable_immediate;
822
Ville Syrjälä5380e922013-10-04 14:53:36 +0300823 /* array of size num_crtcs */
824 struct drm_vblank_crtc *vblank;
825
Mario Kleiner27641c32010-10-23 04:20:23 +0200826 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000827 spinlock_t vbl_lock;
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700828
829 u32 max_vblank_count; /**< size of vblank counter register */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830
Kristian Høgsbergc9a9c5e2009-09-12 04:33:34 +1000831 /**
832 * List of events
833 */
834 struct list_head vblank_event_list;
835 spinlock_t event_lock;
836
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000837 /*@} */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838
Dave Airlie55910512007-07-11 16:53:40 +1000839 struct drm_agp_head *agp; /**< AGP data */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000841 struct pci_dev *pdev; /**< PCI device structure */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842#ifdef __alpha__
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843 struct pci_controller *hose;
844#endif
Jordan Crousedcdb1672010-05-27 13:40:25 -0600845
846 struct platform_device *platformdev; /**< Platform device struture */
Dave Airliedc5698e2013-09-09 10:02:56 +1000847 struct virtio_device *virtdev;
Jordan Crousedcdb1672010-05-27 13:40:25 -0600848
Dave Airlie55910512007-07-11 16:53:40 +1000849 struct drm_sg_mem *sg; /**< Scatter gather memory */
Dave Airlie19227562011-02-24 08:35:06 +1000850 unsigned int num_crtcs; /**< Number of CRTCs on this device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851
David Herrmann69d516c2014-08-29 12:12:39 +0200852 struct {
853 int context;
854 struct drm_hw_lock *lock;
855 } sigdata;
856
Benjamin Herrenschmidtf77d3902009-02-02 16:55:46 +1100857 struct drm_local_map *agp_buffer_map;
Dave Airlied1f2b552005-08-05 22:11:22 +1000858 unsigned int agp_buffer_token;
=?utf-8?q?Michel_D=C3=A4nzer?=bea56792006-10-24 23:04:19 +1000859
Rob Clark417009fb2014-11-25 20:33:10 -0500860 struct drm_mode_config mode_config; /**< Current mode config */
Dave Airlief453ba02008-11-07 14:05:41 -0800861
Eric Anholt673a3942008-07-30 12:06:12 -0700862 /** \name GEM information */
863 /*@{ */
Daniel Vettercd4f0132013-08-15 00:02:44 +0200864 struct mutex object_name_lock;
Eric Anholt673a3942008-07-30 12:06:12 -0700865 struct idr object_name_idr;
Daniel Vetterb04a5902013-12-11 14:24:46 +0100866 struct drm_vma_offset_manager *vma_offset_manager;
Eric Anholt673a3942008-07-30 12:06:12 -0700867 /*@} */
Dave Airlie5bcf7192010-12-07 09:20:40 +1000868 int switch_power_state;
Dave Airlie84b1fd12007-07-11 15:53:27 +1000869};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870
Dave Airlie5bcf7192010-12-07 09:20:40 +1000871#define DRM_SWITCH_POWER_ON 0
872#define DRM_SWITCH_POWER_OFF 1
873#define DRM_SWITCH_POWER_CHANGING 2
Dave Airlie13bb9cc2012-09-12 15:55:05 +1000874#define DRM_SWITCH_POWER_DYNAMIC_OFF 3
Dave Airlie5bcf7192010-12-07 09:20:40 +1000875
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000876static __inline__ int drm_core_check_feature(struct drm_device *dev,
877 int feature)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878{
879 return ((dev->driver->driver_features & feature) ? 1 : 0);
880}
881
Dave Airlie2c07a212012-02-20 14:18:07 +0000882static inline void drm_device_set_unplugged(struct drm_device *dev)
883{
884 smp_wmb();
885 atomic_set(&dev->unplugged, 1);
886}
887
888static inline int drm_device_is_unplugged(struct drm_device *dev)
889{
890 int ret = atomic_read(&dev->unplugged);
891 smp_rmb();
892 return ret;
893}
894
Thomas Hellstrom43683052014-03-13 11:07:44 +0100895static inline bool drm_is_render_client(const struct drm_file *file_priv)
David Herrmann17931262013-08-25 18:29:00 +0200896{
897 return file_priv->minor->type == DRM_MINOR_RENDER;
898}
899
Thomas Hellstromac05dbc2014-02-19 14:21:48 +0100900static inline bool drm_is_control_client(const struct drm_file *file_priv)
901{
902 return file_priv->minor->type == DRM_MINOR_CONTROL;
903}
904
Thomas Hellstrom43683052014-03-13 11:07:44 +0100905static inline bool drm_is_primary_client(const struct drm_file *file_priv)
906{
907 return file_priv->minor->type == DRM_MINOR_LEGACY;
908}
909
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910/******************************************************************/
911/** \name Internal function definitions */
912/*@{*/
913
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914 /* Driver support (drm_drv.h) */
Thomas Hellstrom51010202015-07-10 22:31:08 -0700915extern int drm_ioctl_permit(u32 flags, struct drm_file *file_priv);
Arnd Bergmanned8b6702009-12-16 22:17:09 +0000916extern long drm_ioctl(struct file *filp,
917 unsigned int cmd, unsigned long arg);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000918extern long drm_compat_ioctl(struct file *filp,
919 unsigned int cmd, unsigned long arg);
Thomas Hellstrom4beb6d92014-02-26 15:51:57 +0100920extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921
922 /* Device support (drm_fops.h) */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000923extern int drm_open(struct inode *inode, struct file *filp);
Kristian Høgsbergc9a9c5e2009-09-12 04:33:34 +1000924extern ssize_t drm_read(struct file *filp, char __user *buffer,
925 size_t count, loff_t *offset);
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000926extern int drm_release(struct inode *inode, struct file *filp);
Thomas Hellstroma0af2e52015-12-02 09:24:46 -0800927extern int drm_new_set_master(struct drm_device *dev, struct drm_file *fpriv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928
929 /* Mapping support (drm_vm.h) */
Dave Airlieb5e89ed2005-09-25 14:28:13 +1000930extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931
Daniel Vetter78238752014-09-10 12:43:55 +0200932/* Misc. IOCTL support (drm_ioctl.c) */
933int drm_noop(struct drm_device *dev, void *data,
934 struct drm_file *file_priv);
Daniel Vetter4b635392015-09-08 13:56:26 +0200935int drm_invalid_op(struct drm_device *dev, void *data,
936 struct drm_file *file_priv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937
Eric Anholt673a3942008-07-30 12:06:12 -0700938/* Cache management (drm_cache.c) */
939void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
Chris Wilson9da3da62012-06-01 15:20:22 +0100940void drm_clflush_sg(struct sg_table *st);
Ville Syrjäläc2d15352014-04-01 12:59:08 +0300941void drm_clflush_virt_range(void *addr, unsigned long length);
Eric Anholt673a3942008-07-30 12:06:12 -0700942
Thomas Hellstrom040ac322007-03-23 13:28:33 +1100943/*
944 * These are exported to drivers so that they can implement fencing using
945 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
946 */
947
Linus Torvalds1da177e2005-04-16 15:20:36 -0700948 /* IRQ support (drm_irq.h) */
Daniel Vetterbb0f1b52013-11-03 21:09:27 +0100949extern int drm_irq_install(struct drm_device *dev, int irq);
Dave Airlie84b1fd12007-07-11 15:53:27 +1000950extern int drm_irq_uninstall(struct drm_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951
Thierry Redingcc1ef112015-08-12 17:00:31 +0200952extern int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs);
Dave Airlieaf6061a2008-05-07 12:15:39 +1000953extern int drm_wait_vblank(struct drm_device *dev, void *data,
Jesse Barnes0a3e67a2008-09-30 12:14:26 -0700954 struct drm_file *filp);
Thierry Reding88e72712015-09-24 18:35:31 +0200955extern u32 drm_vblank_count(struct drm_device *dev, unsigned int pipe);
Thierry Reding96d3f912014-12-16 13:08:47 +0100956extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc);
Thierry Redingcc1ef112015-08-12 17:00:31 +0200957extern u32 drm_vblank_count_and_time(struct drm_device *dev, unsigned int pipe,
Mario Kleiner27641c32010-10-23 04:20:23 +0200958 struct timeval *vblanktime);
Thierry Redingcf648302015-09-24 18:35:36 +0200959extern u32 drm_crtc_vblank_count_and_time(struct drm_crtc *crtc,
960 struct timeval *vblanktime);
Thierry Redingcc1ef112015-08-12 17:00:31 +0200961extern void drm_send_vblank_event(struct drm_device *dev, unsigned int pipe,
962 struct drm_pending_vblank_event *e);
Thierry Redinga4d7b302014-12-15 14:47:18 +0100963extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc,
964 struct drm_pending_vblank_event *e);
Daniel Vetterbbc87642015-11-10 17:37:31 +0100965extern void drm_arm_vblank_event(struct drm_device *dev, unsigned int pipe,
966 struct drm_pending_vblank_event *e);
967extern void drm_crtc_arm_vblank_event(struct drm_crtc *crtc,
968 struct drm_pending_vblank_event *e);
Thierry Redingcc1ef112015-08-12 17:00:31 +0200969extern bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe);
Thierry Reding115ebcd2014-12-15 14:47:18 +0100970extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc);
Thierry Redingcc1ef112015-08-12 17:00:31 +0200971extern int drm_vblank_get(struct drm_device *dev, unsigned int pipe);
972extern void drm_vblank_put(struct drm_device *dev, unsigned int pipe);
Daniel Vetter89dd6a42014-05-15 15:32:12 +0200973extern int drm_crtc_vblank_get(struct drm_crtc *crtc);
974extern void drm_crtc_vblank_put(struct drm_crtc *crtc);
Thierry Redingcc1ef112015-08-12 17:00:31 +0200975extern void drm_wait_one_vblank(struct drm_device *dev, unsigned int pipe);
Daniel Vettere8450f52014-07-25 23:34:03 +0200976extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc);
Thierry Redingcc1ef112015-08-12 17:00:31 +0200977extern void drm_vblank_off(struct drm_device *dev, unsigned int pipe);
978extern void drm_vblank_on(struct drm_device *dev, unsigned int pipe);
Daniel Vetter89dd6a42014-05-15 15:32:12 +0200979extern void drm_crtc_vblank_off(struct drm_crtc *crtc);
Daniel Vetter96256042015-02-13 21:03:42 +0100980extern void drm_crtc_vblank_reset(struct drm_crtc *crtc);
Daniel Vetter89dd6a42014-05-15 15:32:12 +0200981extern void drm_crtc_vblank_on(struct drm_crtc *crtc);
Keith Packard52440212008-11-18 09:30:25 -0800982extern void drm_vblank_cleanup(struct drm_device *dev);
Ville Syrjäläb44f8402015-09-30 16:46:48 +0300983extern u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe);
Daniel Vetter89dd6a42014-05-15 15:32:12 +0200984
Mario Kleiner27641c32010-10-23 04:20:23 +0200985extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
Thierry Redingcc1ef112015-08-12 17:00:31 +0200986 unsigned int pipe, int *max_error,
Mario Kleiner27641c32010-10-23 04:20:23 +0200987 struct timeval *vblank_time,
988 unsigned flags,
Ville Syrjälä7da903e2013-10-26 17:57:31 +0300989 const struct drm_display_mode *mode);
Ville Syrjälä545cdd52013-10-26 17:16:30 +0300990extern void drm_calc_timestamping_constants(struct drm_crtc *crtc,
991 const struct drm_display_mode *mode);
Mario Kleiner27641c32010-10-23 04:20:23 +0200992
Ville Syrjälä020178a2014-05-22 19:36:03 +0300993/**
994 * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC
995 * @crtc: which CRTC's vblank waitqueue to retrieve
996 *
997 * This function returns a pointer to the vblank waitqueue for the CRTC.
998 * Drivers can use this to implement vblank waits using wait_event() & co.
999 */
1000static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc)
1001{
1002 return &crtc->dev->vblank[drm_crtc_index(crtc)].queue;
1003}
Steffen Trumtrarebc64e42012-11-14 11:22:52 +01001004
Jesse Barnes0a3e67a2008-09-30 12:14:26 -07001005/* Modesetting support */
Thierry Redingcc1ef112015-08-12 17:00:31 +02001006extern void drm_vblank_pre_modeset(struct drm_device *dev, unsigned int pipe);
1007extern void drm_vblank_post_modeset(struct drm_device *dev, unsigned int pipe);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001008
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009 /* Stub support (drm_stub.h) */
Dave Airlie7c1c2872008-11-28 14:22:24 +10001010extern struct drm_master *drm_master_get(struct drm_master *master);
1011extern void drm_master_put(struct drm_master **master);
Dave Airlie8410ea32010-12-15 03:16:38 +10001012
Kristian Høgsberg112b7152009-01-04 16:55:33 -05001013extern void drm_put_dev(struct drm_device *dev);
Dave Airlie2c07a212012-02-20 14:18:07 +00001014extern void drm_unplug_dev(struct drm_device *dev);
Dave Airlieb5e89ed2005-09-25 14:28:13 +10001015extern unsigned int drm_debug;
Rob Clark88a48e22014-12-18 16:01:50 -05001016extern bool drm_atomic;
Dave Airlie2c14f282008-04-21 16:47:32 +10001017
Ben Gamari955b12d2009-02-17 20:08:49 -05001018 /* Debugfs support */
1019#if defined(CONFIG_DEBUG_FS)
Lespiau, Damien7d747952013-10-17 19:09:53 +01001020extern int drm_debugfs_create_files(const struct drm_info_list *files,
1021 int count, struct dentry *root,
1022 struct drm_minor *minor);
1023extern int drm_debugfs_remove_files(const struct drm_info_list *files,
1024 int count, struct drm_minor *minor);
Thierry Reding66ee52e2013-12-12 15:44:04 +01001025#else
Thierry Reding66ee52e2013-12-12 15:44:04 +01001026static inline int drm_debugfs_create_files(const struct drm_info_list *files,
1027 int count, struct dentry *root,
1028 struct drm_minor *minor)
1029{
1030 return 0;
1031}
1032
1033static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
1034 int count, struct drm_minor *minor)
1035{
1036 return 0;
1037}
Ben Gamari955b12d2009-02-17 20:08:49 -05001038#endif
1039
Aaron Plattner89177642013-01-15 20:47:42 +00001040extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
1041 struct drm_gem_object *obj, int flags);
Dave Airlie32488772011-11-25 15:21:02 +00001042extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
1043 struct drm_file *file_priv, uint32_t handle, uint32_t flags,
1044 int *prime_fd);
Aaron Plattner89177642013-01-15 20:47:42 +00001045extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
1046 struct dma_buf *dma_buf);
Dave Airlie32488772011-11-25 15:21:02 +00001047extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
1048 struct drm_file *file_priv, int prime_fd, uint32_t *handle);
Daniel Vetterc1d67982013-08-15 00:02:30 +02001049extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
Dave Airlie32488772011-11-25 15:21:02 +00001050
Dave Airlie51ab7ba2012-05-18 15:40:33 +01001051extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
1052 dma_addr_t *addrs, int max_pages);
Thierry Reding34eab432014-06-04 09:18:29 +02001053extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages);
Dave Airlie32488772011-11-25 15:21:02 +00001054extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
1055
Linus Torvalds1da177e2005-04-16 15:20:36 -07001056
Daniel Vetterba8286f2014-09-11 07:43:25 +02001057extern struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size,
1058 size_t align);
1059extern void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001060
1061 /* sysfs support (drm_sysfs.c) */
Dave Airlief453ba02008-11-07 14:05:41 -08001062extern void drm_sysfs_hotplug_event(struct drm_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063
Eric Anholt673a3942008-07-30 12:06:12 -07001064
David Herrmann1bb72532013-10-02 11:23:34 +02001065struct drm_device *drm_dev_alloc(struct drm_driver *driver,
1066 struct device *parent);
David Herrmann099d1c22014-01-29 10:21:36 +01001067void drm_dev_ref(struct drm_device *dev);
1068void drm_dev_unref(struct drm_device *dev);
David Herrmannc22f0ac2013-10-02 11:23:35 +02001069int drm_dev_register(struct drm_device *dev, unsigned long flags);
David Herrmannc3a49732013-10-02 11:23:38 +02001070void drm_dev_unregister(struct drm_device *dev);
Nicolas Iooss399368aa2015-12-11 11:20:27 +01001071int drm_dev_set_unique(struct drm_device *dev, const char *name);
David Herrmann1616c522014-01-29 10:49:19 +01001072
1073struct drm_minor *drm_minor_acquire(unsigned int minor_id);
1074void drm_minor_release(struct drm_minor *minor);
1075
Dave Airlie8410ea32010-12-15 03:16:38 +10001076/*@}*/
1077
1078/* PCI section */
1079static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
1080{
Dave Airlieb5e89ed2005-09-25 14:28:13 +10001081 if (dev->driver->device_is_agp != NULL) {
1082 int err = (*dev->driver->device_is_agp) (dev);
1083
Dave Airliecda17382005-07-10 17:31:26 +10001084 if (err != 2) {
1085 return err;
1086 }
1087 }
1088
1089 return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1090}
Daniel Vetter4efafeb2013-12-11 11:34:38 +01001091void drm_pci_agp_destroy(struct drm_device *dev);
Dave Airliecda17382005-07-10 17:31:26 +10001092
Dave Airlie8410ea32010-12-15 03:16:38 +10001093extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
1094extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
Thierry Redinga9e3c902014-08-05 13:37:47 +02001095#ifdef CONFIG_PCI
Dave Airlie8410ea32010-12-15 03:16:38 +10001096extern int drm_get_pci_dev(struct pci_dev *pdev,
Jordan Crousedcdb1672010-05-27 13:40:25 -06001097 const struct pci_device_id *ent,
1098 struct drm_driver *driver);
David Herrmann915b4d12014-08-29 12:12:43 +02001099extern int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master);
Thierry Redinga9e3c902014-08-05 13:37:47 +02001100#else
1101static inline int drm_get_pci_dev(struct pci_dev *pdev,
1102 const struct pci_device_id *ent,
1103 struct drm_driver *driver)
1104{
1105 return -ENOSYS;
1106}
1107
1108static inline int drm_pci_set_busid(struct drm_device *dev,
1109 struct drm_master *master)
1110{
1111 return -ENOSYS;
1112}
1113#endif
Dave Airlie8410ea32010-12-15 03:16:38 +10001114
Dave Airlief4297782012-06-27 08:35:53 +01001115#define DRM_PCIE_SPEED_25 1
1116#define DRM_PCIE_SPEED_50 2
1117#define DRM_PCIE_SPEED_80 4
1118
1119extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
Alex Deucher60d8edd2015-11-11 23:14:39 -05001120extern int drm_pcie_get_max_link_width(struct drm_device *dev, u32 *mlw);
Dave Airlie8410ea32010-12-15 03:16:38 +10001121
1122/* platform section */
1123extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
David Herrmann915b4d12014-08-29 12:12:43 +02001124extern int drm_platform_set_busid(struct drm_device *d, struct drm_master *m);
Dave Airlie8410ea32010-12-15 03:16:38 +10001125
Dave Airliecc1f7192012-01-05 09:55:22 +00001126/* returns true if currently okay to sleep */
1127static __inline__ bool drm_can_sleep(void)
1128{
1129 if (in_atomic() || in_dbg_master() || irqs_disabled())
1130 return false;
1131 return true;
1132}
1133
Jani Nikula373701b2015-11-24 21:21:55 +02001134/* helper for handling conditionals in various for_each macros */
1135#define for_each_if(condition) if (!(condition)) {} else
1136
Linus Torvalds1da177e2005-04-16 15:20:36 -07001137#endif