Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /** |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 2 | * \file drm_ioctl.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * IOCTL processing for DRM |
| 4 | * |
| 5 | * \author Rickard E. (Rik) Faith <faith@valinux.com> |
| 6 | * \author Gareth Hughes <gareth@valinux.com> |
| 7 | */ |
| 8 | |
| 9 | /* |
| 10 | * Created: Fri Jan 8 09:01:26 1999 by faith@valinux.com |
| 11 | * |
| 12 | * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. |
| 13 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. |
| 14 | * All Rights Reserved. |
| 15 | * |
| 16 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 17 | * copy of this software and associated documentation files (the "Software"), |
| 18 | * to deal in the Software without restriction, including without limitation |
| 19 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 20 | * and/or sell copies of the Software, and to permit persons to whom the |
| 21 | * Software is furnished to do so, subject to the following conditions: |
| 22 | * |
| 23 | * The above copyright notice and this permission notice (including the next |
| 24 | * paragraph) shall be included in all copies or substantial portions of the |
| 25 | * Software. |
| 26 | * |
| 27 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 28 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 29 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 30 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 31 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 32 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 33 | * OTHER DEALINGS IN THE SOFTWARE. |
| 34 | */ |
| 35 | |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 36 | #include <drm/drmP.h> |
| 37 | #include <drm/drm_core.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 39 | #include <linux/pci.h> |
| 40 | #include <linux/export.h> |
Andy Lutomirski | 0dd99f1 | 2013-05-13 23:58:48 +0000 | [diff] [blame] | 41 | #ifdef CONFIG_X86 |
| 42 | #include <asm/mtrr.h> |
| 43 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
| 45 | /** |
| 46 | * Get the bus id. |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 47 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 49 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | * \param cmd command. |
| 51 | * \param arg user argument, pointing to a drm_unique structure. |
| 52 | * \return zero on success or a negative number on failure. |
| 53 | * |
| 54 | * Copies the bus id from drm_device::unique into user space. |
| 55 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 56 | int drm_getunique(struct drm_device *dev, void *data, |
| 57 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 59 | struct drm_unique *u = data; |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 60 | struct drm_master *master = file_priv->master; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 62 | if (u->unique_len >= master->unique_len) { |
| 63 | if (copy_to_user(u->unique, master->unique, master->unique_len)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | return -EFAULT; |
| 65 | } |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 66 | u->unique_len = master->unique_len; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 67 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | return 0; |
| 69 | } |
| 70 | |
Chris Wilson | 3fb688f | 2010-08-04 11:09:42 +0100 | [diff] [blame] | 71 | static void |
| 72 | drm_unset_busid(struct drm_device *dev, |
| 73 | struct drm_master *master) |
| 74 | { |
| 75 | kfree(dev->devname); |
| 76 | dev->devname = NULL; |
| 77 | |
| 78 | kfree(master->unique); |
| 79 | master->unique = NULL; |
| 80 | master->unique_len = 0; |
| 81 | master->unique_size = 0; |
| 82 | } |
| 83 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | /** |
| 85 | * Set the bus id. |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 86 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 88 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | * \param cmd command. |
| 90 | * \param arg user argument, pointing to a drm_unique structure. |
| 91 | * \return zero on success or a negative number on failure. |
| 92 | * |
| 93 | * Copies the bus id from userspace into drm_device::unique, and verifies that |
| 94 | * it matches the device this DRM is attached to (EINVAL otherwise). Deprecated |
| 95 | * in interface version 1.1 and will return EBUSY when setversion has requested |
| 96 | * version 1.1 or greater. |
| 97 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 98 | int drm_setunique(struct drm_device *dev, void *data, |
| 99 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 101 | struct drm_unique *u = data; |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 102 | struct drm_master *master = file_priv->master; |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 103 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 105 | if (master->unique_len || master->unique) |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 106 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 108 | if (!u->unique_len || u->unique_len > 1024) |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 109 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 111 | if (!dev->driver->bus->set_unique) |
| 112 | return -EINVAL; |
| 113 | |
| 114 | ret = dev->driver->bus->set_unique(dev, master, u); |
| 115 | if (ret) |
Chris Wilson | 3fb688f | 2010-08-04 11:09:42 +0100 | [diff] [blame] | 116 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
| 118 | return 0; |
Chris Wilson | 3fb688f | 2010-08-04 11:09:42 +0100 | [diff] [blame] | 119 | |
| 120 | err: |
| 121 | drm_unset_busid(dev, master); |
| 122 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | } |
| 124 | |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 125 | static int drm_set_busid(struct drm_device *dev, struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | { |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 127 | struct drm_master *master = file_priv->master; |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 128 | int ret; |
Chris Wilson | 3fb688f | 2010-08-04 11:09:42 +0100 | [diff] [blame] | 129 | |
| 130 | if (master->unique != NULL) |
| 131 | drm_unset_busid(dev, master); |
Dave Airlie | fe34765 | 2006-01-02 21:19:39 +1100 | [diff] [blame] | 132 | |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 133 | ret = dev->driver->bus->set_busid(dev, master); |
| 134 | if (ret) |
| 135 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | return 0; |
Chris Wilson | 3fb688f | 2010-08-04 11:09:42 +0100 | [diff] [blame] | 137 | err: |
| 138 | drm_unset_busid(dev, master); |
| 139 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | } |
| 141 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | /** |
| 143 | * Get a mapping information. |
| 144 | * |
| 145 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 146 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | * \param cmd command. |
| 148 | * \param arg user argument, pointing to a drm_map structure. |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 149 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | * \return zero on success or a negative number on failure. |
| 151 | * |
| 152 | * Searches for the mapping with the specified offset and copies its information |
| 153 | * into userspace |
| 154 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 155 | int drm_getmap(struct drm_device *dev, void *data, |
| 156 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 158 | struct drm_map *map = data; |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 159 | struct drm_map_list *r_list = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | struct list_head *list; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 161 | int idx; |
| 162 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 164 | idx = map->offset; |
Ilija Hadzic | 09b4ea4 | 2011-10-28 17:43:28 -0400 | [diff] [blame] | 165 | if (idx < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | |
| 168 | i = 0; |
Ilija Hadzic | 09b4ea4 | 2011-10-28 17:43:28 -0400 | [diff] [blame] | 169 | mutex_lock(&dev->struct_mutex); |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 170 | list_for_each(list, &dev->maplist) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 171 | if (i == idx) { |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 172 | r_list = list_entry(list, struct drm_map_list, head); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | break; |
| 174 | } |
| 175 | i++; |
| 176 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 177 | if (!r_list || !r_list->map) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 178 | mutex_unlock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | return -EINVAL; |
| 180 | } |
| 181 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 182 | map->offset = r_list->map->offset; |
| 183 | map->size = r_list->map->size; |
| 184 | map->type = r_list->map->type; |
| 185 | map->flags = r_list->map->flags; |
| 186 | map->handle = (void *)(unsigned long) r_list->user_token; |
Andy Lutomirski | 0dd99f1 | 2013-05-13 23:58:48 +0000 | [diff] [blame] | 187 | |
| 188 | #ifdef CONFIG_X86 |
| 189 | /* |
| 190 | * There appears to be exactly one user of the mtrr index: dritest. |
| 191 | * It's easy enough to keep it working on non-PAT systems. |
| 192 | */ |
| 193 | map->mtrr = phys_wc_to_mtrr_index(r_list->map->mtrr); |
| 194 | #else |
| 195 | map->mtrr = -1; |
| 196 | #endif |
| 197 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 198 | mutex_unlock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | return 0; |
| 201 | } |
| 202 | |
| 203 | /** |
| 204 | * Get client information. |
| 205 | * |
| 206 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 207 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | * \param cmd command. |
| 209 | * \param arg user argument, pointing to a drm_client structure. |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 210 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | * \return zero on success or a negative number on failure. |
| 212 | * |
| 213 | * Searches for the client with the specified index and copies its information |
| 214 | * into userspace |
| 215 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 216 | int drm_getclient(struct drm_device *dev, void *data, |
| 217 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 219 | struct drm_client *client = data; |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 220 | struct drm_file *pt; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 221 | int idx; |
| 222 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 224 | idx = client->idx; |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 225 | i = 0; |
Ilija Hadzic | 09b4ea4 | 2011-10-28 17:43:28 -0400 | [diff] [blame] | 226 | |
| 227 | mutex_lock(&dev->struct_mutex); |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 228 | list_for_each_entry(pt, &dev->filelist, lhead) { |
Eric Anholt | b018fcd | 2007-11-22 18:46:54 +1000 | [diff] [blame] | 229 | if (i++ >= idx) { |
| 230 | client->auth = pt->authenticated; |
Eric W. Biederman | 5fce5e0 | 2012-02-07 16:47:26 -0800 | [diff] [blame] | 231 | client->pid = pid_vnr(pt->pid); |
| 232 | client->uid = from_kuid_munged(current_user_ns(), pt->uid); |
Eric Anholt | b018fcd | 2007-11-22 18:46:54 +1000 | [diff] [blame] | 233 | client->magic = pt->magic; |
| 234 | client->iocs = pt->ioctl_count; |
| 235 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 236 | |
Eric Anholt | b018fcd | 2007-11-22 18:46:54 +1000 | [diff] [blame] | 237 | return 0; |
| 238 | } |
| 239 | } |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 240 | mutex_unlock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | |
Eric Anholt | b018fcd | 2007-11-22 18:46:54 +1000 | [diff] [blame] | 242 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | } |
| 244 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 245 | /** |
| 246 | * Get statistics information. |
| 247 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 249 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | * \param cmd command. |
| 251 | * \param arg user argument, pointing to a drm_stats structure. |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 252 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | * \return zero on success or a negative number on failure. |
| 254 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 255 | int drm_getstats(struct drm_device *dev, void *data, |
| 256 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 258 | struct drm_stats *stats = data; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 259 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
Li Zefan | 246a3d1 | 2007-11-05 12:53:09 +1000 | [diff] [blame] | 261 | memset(stats, 0, sizeof(*stats)); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 262 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | for (i = 0; i < dev->counters; i++) { |
| 264 | if (dev->types[i] == _DRM_STAT_LOCK) |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 265 | stats->data[i].value = |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 266 | (file_priv->master->lock.hw_lock ? file_priv->master->lock.hw_lock->lock : 0); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 267 | else |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 268 | stats->data[i].value = atomic_read(&dev->counts[i]); |
| 269 | stats->data[i].type = dev->types[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 271 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 272 | stats->count = dev->counters; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | return 0; |
| 275 | } |
| 276 | |
| 277 | /** |
Ben Skeggs | 9f35421 | 2011-02-21 11:17:35 +1000 | [diff] [blame] | 278 | * Get device/driver capabilities |
| 279 | */ |
| 280 | int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv) |
| 281 | { |
| 282 | struct drm_get_cap *req = data; |
| 283 | |
| 284 | req->value = 0; |
Dave Airlie | e73f88a | 2011-03-04 14:50:28 +1000 | [diff] [blame] | 285 | switch (req->capability) { |
| 286 | case DRM_CAP_DUMB_BUFFER: |
| 287 | if (dev->driver->dumb_create) |
| 288 | req->value = 1; |
| 289 | break; |
Dave Airlie | 51eab41 | 2011-03-24 20:54:35 +1000 | [diff] [blame] | 290 | case DRM_CAP_VBLANK_HIGH_CRTC: |
Ilija Hadzic | 19b01b5 | 2011-03-18 16:58:04 -0500 | [diff] [blame] | 291 | req->value = 1; |
| 292 | break; |
Dave Airlie | 019d96c | 2011-09-29 16:20:42 +0100 | [diff] [blame] | 293 | case DRM_CAP_DUMB_PREFERRED_DEPTH: |
| 294 | req->value = dev->mode_config.preferred_depth; |
| 295 | break; |
| 296 | case DRM_CAP_DUMB_PREFER_SHADOW: |
| 297 | req->value = dev->mode_config.prefer_shadow; |
| 298 | break; |
Dave Airlie | 4271a40 | 2012-04-02 14:11:50 +0100 | [diff] [blame] | 299 | case DRM_CAP_PRIME: |
| 300 | req->value |= dev->driver->prime_fd_to_handle ? DRM_PRIME_CAP_IMPORT : 0; |
| 301 | req->value |= dev->driver->prime_handle_to_fd ? DRM_PRIME_CAP_EXPORT : 0; |
| 302 | break; |
Imre Deak | c61eef7 | 2012-10-23 18:53:26 +0000 | [diff] [blame] | 303 | case DRM_CAP_TIMESTAMP_MONOTONIC: |
| 304 | req->value = drm_timestamp_monotonic; |
| 305 | break; |
Dave Airlie | e73f88a | 2011-03-04 14:50:28 +1000 | [diff] [blame] | 306 | default: |
| 307 | return -EINVAL; |
| 308 | } |
Ben Skeggs | 9f35421 | 2011-02-21 11:17:35 +1000 | [diff] [blame] | 309 | return 0; |
| 310 | } |
| 311 | |
| 312 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | * Setversion ioctl. |
| 314 | * |
| 315 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 316 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | * \param cmd command. |
| 318 | * \param arg user argument, pointing to a drm_lock structure. |
| 319 | * \return zero on success or negative number on failure. |
| 320 | * |
| 321 | * Sets the requested interface version |
| 322 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 323 | int drm_setversion(struct drm_device *dev, void *data, struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 325 | struct drm_set_version *sv = data; |
| 326 | int if_version, retcode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 328 | if (sv->drm_di_major != -1) { |
| 329 | if (sv->drm_di_major != DRM_IF_MAJOR || |
| 330 | sv->drm_di_minor < 0 || sv->drm_di_minor > DRM_IF_MINOR) { |
| 331 | retcode = -EINVAL; |
| 332 | goto done; |
| 333 | } |
| 334 | if_version = DRM_IF_VERSION(sv->drm_di_major, |
| 335 | sv->drm_di_minor); |
Dave Airlie | 3d77461 | 2006-08-07 20:07:43 +1000 | [diff] [blame] | 336 | dev->if_version = max(if_version, dev->if_version); |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 337 | if (sv->drm_di_minor >= 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | /* |
| 339 | * Version 1.1 includes tying of DRM to specific device |
Benjamin Herrenschmidt | c17c2f8 | 2010-08-06 13:55:10 +1000 | [diff] [blame] | 340 | * Version 1.4 has proper PCI domain support |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | */ |
Chris Wilson | 3fb688f | 2010-08-04 11:09:42 +0100 | [diff] [blame] | 342 | retcode = drm_set_busid(dev, file_priv); |
| 343 | if (retcode) |
| 344 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | } |
| 346 | } |
| 347 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 348 | if (sv->drm_dd_major != -1) { |
| 349 | if (sv->drm_dd_major != dev->driver->major || |
| 350 | sv->drm_dd_minor < 0 || sv->drm_dd_minor > |
| 351 | dev->driver->minor) { |
| 352 | retcode = -EINVAL; |
| 353 | goto done; |
| 354 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | |
| 356 | if (dev->driver->set_version) |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 357 | dev->driver->set_version(dev, sv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | } |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 359 | |
| 360 | done: |
| 361 | sv->drm_di_major = DRM_IF_MAJOR; |
| 362 | sv->drm_di_minor = DRM_IF_MINOR; |
| 363 | sv->drm_dd_major = dev->driver->major; |
| 364 | sv->drm_dd_minor = dev->driver->minor; |
| 365 | |
| 366 | return retcode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | } |
| 368 | |
| 369 | /** No-op ioctl. */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 370 | int drm_noop(struct drm_device *dev, void *data, |
| 371 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | { |
| 373 | DRM_DEBUG("\n"); |
| 374 | return 0; |
| 375 | } |
Daniel Vetter | b2c606f | 2012-01-17 12:50:12 +0100 | [diff] [blame] | 376 | EXPORT_SYMBOL(drm_noop); |