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_fops.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * File operations for DRM |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 4 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * \author Rickard E. (Rik) Faith <faith@valinux.com> |
| 6 | * \author Daryll Strauss <daryll@valinux.com> |
| 7 | * \author Gareth Hughes <gareth@valinux.com> |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * Created: Mon Jan 4 08:58:31 1999 by faith@valinux.com |
| 12 | * |
| 13 | * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. |
| 14 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. |
| 15 | * All Rights Reserved. |
| 16 | * |
| 17 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 18 | * copy of this software and associated documentation files (the "Software"), |
| 19 | * to deal in the Software without restriction, including without limitation |
| 20 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 21 | * and/or sell copies of the Software, and to permit persons to whom the |
| 22 | * Software is furnished to do so, subject to the following conditions: |
| 23 | * |
| 24 | * The above copyright notice and this permission notice (including the next |
| 25 | * paragraph) shall be included in all copies or substantial portions of the |
| 26 | * Software. |
| 27 | * |
| 28 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 29 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 30 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 31 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 32 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 33 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 34 | * OTHER DEALINGS IN THE SOFTWARE. |
| 35 | */ |
| 36 | |
| 37 | #include "drmP.h" |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 38 | #include "drm_sarea.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <linux/poll.h> |
| 40 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 41 | static int drm_open_helper(struct inode *inode, struct file *filp, |
| 42 | drm_device_t * dev); |
Dave Airlie | c94f702 | 2005-07-07 21:03:38 +1000 | [diff] [blame] | 43 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 44 | static int drm_setup(drm_device_t * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | { |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 46 | drm_local_map_t *map; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | int i; |
| 48 | int ret; |
Dave Airlie | 11d9c2f | 2007-02-18 17:13:39 +1100 | [diff] [blame] | 49 | u32 sareapage; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
Dave Airlie | 22eae94 | 2005-11-10 22:16:34 +1100 | [diff] [blame] | 51 | if (dev->driver->firstopen) { |
| 52 | ret = dev->driver->firstopen(dev); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 53 | if (ret != 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | return ret; |
| 55 | } |
| 56 | |
Thomas Hellstrom | 1f4eccf | 2006-08-18 16:37:10 +1000 | [diff] [blame] | 57 | dev->magicfree.next = NULL; |
| 58 | |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 59 | /* prebuild the SAREA */ |
Andrew Morton | 4b560fd | 2007-03-19 09:08:21 +1100 | [diff] [blame] | 60 | sareapage = max_t(unsigned, SAREA_MAX, PAGE_SIZE); |
Dave Airlie | 11d9c2f | 2007-02-18 17:13:39 +1100 | [diff] [blame] | 61 | i = drm_addmap(dev, 0, sareapage, _DRM_SHM, _DRM_CONTAINS_LOCK, &map); |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 62 | if (i != 0) |
| 63 | return i; |
| 64 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 65 | atomic_set(&dev->ioctl_count, 0); |
| 66 | atomic_set(&dev->vma_count, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | dev->buf_use = 0; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 68 | atomic_set(&dev->buf_alloc, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 70 | if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) { |
| 71 | i = drm_dma_setup(dev); |
| 72 | if (i < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | return i; |
| 74 | } |
| 75 | |
Dave Airlie | 3d77461 | 2006-08-07 20:07:43 +1000 | [diff] [blame] | 76 | for (i = 0; i < ARRAY_SIZE(dev->counts); i++) |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 77 | atomic_set(&dev->counts[i], 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
Thomas Hellstrom | 8669cbc | 2006-08-07 22:22:10 +1000 | [diff] [blame] | 79 | drm_ht_create(&dev->magiclist, DRM_MAGIC_HASH_ORDER); |
| 80 | INIT_LIST_HEAD(&dev->magicfree); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 82 | dev->ctxlist = drm_alloc(sizeof(*dev->ctxlist), DRM_MEM_CTXLIST); |
| 83 | if (dev->ctxlist == NULL) |
| 84 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | memset(dev->ctxlist, 0, sizeof(*dev->ctxlist)); |
| 86 | INIT_LIST_HEAD(&dev->ctxlist->head); |
| 87 | |
| 88 | dev->vmalist = NULL; |
Dave Airlie | 11d9c2f | 2007-02-18 17:13:39 +1100 | [diff] [blame] | 89 | dev->sigdata.lock = NULL; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 90 | init_waitqueue_head(&dev->lock.lock_queue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | dev->queue_count = 0; |
| 92 | dev->queue_reserved = 0; |
| 93 | dev->queue_slots = 0; |
| 94 | dev->queuelist = NULL; |
| 95 | dev->irq_enabled = 0; |
| 96 | dev->context_flag = 0; |
| 97 | dev->interrupt_flag = 0; |
| 98 | dev->dma_flag = 0; |
| 99 | dev->last_context = 0; |
| 100 | dev->last_switch = 0; |
| 101 | dev->last_checked = 0; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 102 | init_waitqueue_head(&dev->context_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | dev->if_version = 0; |
| 104 | |
| 105 | dev->ctx_start = 0; |
| 106 | dev->lck_start = 0; |
| 107 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | dev->buf_async = NULL; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 109 | init_waitqueue_head(&dev->buf_readers); |
| 110 | init_waitqueue_head(&dev->buf_writers); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 112 | DRM_DEBUG("\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
| 114 | /* |
| 115 | * The kernel's context could be created here, but is now created |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 116 | * in drm_dma_enqueue. This is more resource-efficient for |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | * hardware that does not do DMA, but may mean that |
| 118 | * drm_select_queue fails between the time the interrupt is |
| 119 | * initialized and the time the queues are initialized. |
| 120 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | |
| 122 | return 0; |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * Open file. |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 127 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | * \param inode device inode |
| 129 | * \param filp file pointer. |
| 130 | * \return zero on success or a negative number on failure. |
| 131 | * |
| 132 | * Searches the DRM device with the same minor number, calls open_helper(), and |
| 133 | * increments the device open count. If the open count was previous at zero, |
| 134 | * i.e., it's the first that the device is open, then calls setup(). |
| 135 | */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 136 | int drm_open(struct inode *inode, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | { |
| 138 | drm_device_t *dev = NULL; |
| 139 | int minor = iminor(inode); |
| 140 | int retcode = 0; |
| 141 | |
| 142 | if (!((minor >= 0) && (minor < drm_cards_limit))) |
| 143 | return -ENODEV; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | if (!drm_heads[minor]) |
| 146 | return -ENODEV; |
| 147 | |
| 148 | if (!(dev = drm_heads[minor]->dev)) |
| 149 | return -ENODEV; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 150 | |
| 151 | retcode = drm_open_helper(inode, filp, dev); |
| 152 | if (!retcode) { |
| 153 | atomic_inc(&dev->counts[_DRM_STAT_OPENS]); |
| 154 | spin_lock(&dev->count_lock); |
| 155 | if (!dev->open_count++) { |
| 156 | spin_unlock(&dev->count_lock); |
| 157 | return drm_setup(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 159 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | } |
| 161 | |
| 162 | return retcode; |
| 163 | } |
| 164 | EXPORT_SYMBOL(drm_open); |
| 165 | |
| 166 | /** |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 167 | * File \c open operation. |
| 168 | * |
| 169 | * \param inode device inode. |
| 170 | * \param filp file pointer. |
| 171 | * |
| 172 | * Puts the dev->fops corresponding to the device minor number into |
| 173 | * \p filp, call the \c open method, and restore the file operations. |
| 174 | */ |
| 175 | int drm_stub_open(struct inode *inode, struct file *filp) |
| 176 | { |
| 177 | drm_device_t *dev = NULL; |
| 178 | int minor = iminor(inode); |
| 179 | int err = -ENODEV; |
Arjan van de Ven | 99ac48f | 2006-03-28 01:56:41 -0800 | [diff] [blame] | 180 | const struct file_operations *old_fops; |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 181 | |
| 182 | DRM_DEBUG("\n"); |
| 183 | |
| 184 | if (!((minor >= 0) && (minor < drm_cards_limit))) |
| 185 | return -ENODEV; |
| 186 | |
| 187 | if (!drm_heads[minor]) |
| 188 | return -ENODEV; |
| 189 | |
| 190 | if (!(dev = drm_heads[minor]->dev)) |
| 191 | return -ENODEV; |
| 192 | |
| 193 | old_fops = filp->f_op; |
| 194 | filp->f_op = fops_get(&dev->driver->fops); |
| 195 | if (filp->f_op->open && (err = filp->f_op->open(inode, filp))) { |
| 196 | fops_put(filp->f_op); |
| 197 | filp->f_op = fops_get(old_fops); |
| 198 | } |
| 199 | fops_put(old_fops); |
| 200 | |
| 201 | return err; |
| 202 | } |
| 203 | |
| 204 | /** |
| 205 | * Check whether DRI will run on this CPU. |
| 206 | * |
| 207 | * \return non-zero if the DRI will run on this CPU, or zero otherwise. |
| 208 | */ |
| 209 | static int drm_cpu_valid(void) |
| 210 | { |
| 211 | #if defined(__i386__) |
| 212 | if (boot_cpu_data.x86 == 3) |
| 213 | return 0; /* No cmpxchg on a 386 */ |
| 214 | #endif |
| 215 | #if defined(__sparc__) && !defined(__sparc_v9__) |
| 216 | return 0; /* No cmpxchg before v9 sparc. */ |
| 217 | #endif |
| 218 | return 1; |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * Called whenever a process opens /dev/drm. |
| 223 | * |
| 224 | * \param inode device inode. |
| 225 | * \param filp file pointer. |
| 226 | * \param dev device. |
| 227 | * \return zero on success or a negative number on failure. |
| 228 | * |
| 229 | * Creates and initializes a drm_file structure for the file private data in \p |
| 230 | * filp and add it into the double linked list in \p dev. |
| 231 | */ |
| 232 | static int drm_open_helper(struct inode *inode, struct file *filp, |
| 233 | drm_device_t * dev) |
| 234 | { |
| 235 | int minor = iminor(inode); |
| 236 | drm_file_t *priv; |
| 237 | int ret; |
| 238 | |
| 239 | if (filp->f_flags & O_EXCL) |
| 240 | return -EBUSY; /* No exclusive opens */ |
| 241 | if (!drm_cpu_valid()) |
| 242 | return -EINVAL; |
| 243 | |
| 244 | DRM_DEBUG("pid = %d, minor = %d\n", current->pid, minor); |
| 245 | |
| 246 | priv = drm_alloc(sizeof(*priv), DRM_MEM_FILES); |
| 247 | if (!priv) |
| 248 | return -ENOMEM; |
| 249 | |
| 250 | memset(priv, 0, sizeof(*priv)); |
| 251 | filp->private_data = priv; |
| 252 | priv->uid = current->euid; |
| 253 | priv->pid = current->pid; |
| 254 | priv->minor = minor; |
| 255 | priv->head = drm_heads[minor]; |
| 256 | priv->ioctl_count = 0; |
| 257 | /* for compatibility root is always authenticated */ |
| 258 | priv->authenticated = capable(CAP_SYS_ADMIN); |
| 259 | priv->lock_count = 0; |
| 260 | |
| 261 | if (dev->driver->open) { |
| 262 | ret = dev->driver->open(dev, priv); |
| 263 | if (ret < 0) |
| 264 | goto out_free; |
| 265 | } |
| 266 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 267 | mutex_lock(&dev->struct_mutex); |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 268 | if (!dev->file_last) { |
| 269 | priv->next = NULL; |
| 270 | priv->prev = NULL; |
| 271 | dev->file_first = priv; |
| 272 | dev->file_last = priv; |
| 273 | /* first opener automatically becomes master */ |
| 274 | priv->master = 1; |
| 275 | } else { |
| 276 | priv->next = NULL; |
| 277 | priv->prev = dev->file_last; |
| 278 | dev->file_last->next = priv; |
| 279 | dev->file_last = priv; |
| 280 | } |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 281 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 282 | |
| 283 | #ifdef __alpha__ |
| 284 | /* |
| 285 | * Default the hose |
| 286 | */ |
| 287 | if (!dev->hose) { |
| 288 | struct pci_dev *pci_dev; |
| 289 | pci_dev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, NULL); |
| 290 | if (pci_dev) { |
| 291 | dev->hose = pci_dev->sysdata; |
| 292 | pci_dev_put(pci_dev); |
| 293 | } |
| 294 | if (!dev->hose) { |
| 295 | struct pci_bus *b = pci_bus_b(pci_root_buses.next); |
| 296 | if (b) |
| 297 | dev->hose = b->sysdata; |
| 298 | } |
| 299 | } |
| 300 | #endif |
| 301 | |
| 302 | return 0; |
| 303 | out_free: |
| 304 | drm_free(priv, sizeof(*priv), DRM_MEM_FILES); |
| 305 | filp->private_data = NULL; |
| 306 | return ret; |
| 307 | } |
| 308 | |
| 309 | /** No-op. */ |
| 310 | int drm_fasync(int fd, struct file *filp, int on) |
| 311 | { |
| 312 | drm_file_t *priv = filp->private_data; |
| 313 | drm_device_t *dev = priv->head->dev; |
| 314 | int retcode; |
| 315 | |
| 316 | DRM_DEBUG("fd = %d, device = 0x%lx\n", fd, |
| 317 | (long)old_encode_dev(priv->head->device)); |
| 318 | retcode = fasync_helper(fd, filp, on, &dev->buf_async); |
| 319 | if (retcode < 0) |
| 320 | return retcode; |
| 321 | return 0; |
| 322 | } |
| 323 | EXPORT_SYMBOL(drm_fasync); |
| 324 | |
| 325 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | * Release file. |
| 327 | * |
| 328 | * \param inode device inode |
| 329 | * \param filp file pointer. |
| 330 | * \return zero on success or a negative number on failure. |
| 331 | * |
| 332 | * If the hardware lock is held then free it, and take it again for the kernel |
| 333 | * context since it's necessary to reclaim buffers. Unlink the file private |
| 334 | * data from its list and free it. Decreases the open count and if it reaches |
Dave Airlie | 22eae94 | 2005-11-10 22:16:34 +1100 | [diff] [blame] | 335 | * zero calls drm_lastclose(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 337 | int drm_release(struct inode *inode, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | { |
| 339 | drm_file_t *priv = filp->private_data; |
| 340 | drm_device_t *dev; |
| 341 | int retcode = 0; |
| 342 | |
| 343 | lock_kernel(); |
| 344 | dev = priv->head->dev; |
| 345 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 346 | DRM_DEBUG("open_count = %d\n", dev->open_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | |
Dave Airlie | 22eae94 | 2005-11-10 22:16:34 +1100 | [diff] [blame] | 348 | if (dev->driver->preclose) |
| 349 | dev->driver->preclose(dev, filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | |
| 351 | /* ======================================================== |
| 352 | * Begin inline drm_release |
| 353 | */ |
| 354 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 355 | DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", |
| 356 | current->pid, (long)old_encode_dev(priv->head->device), |
| 357 | dev->open_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | |
Thomas Hellstrom | 040ac32 | 2007-03-23 13:28:33 +1100 | [diff] [blame^] | 359 | if (dev->driver->reclaim_buffers_locked && dev->lock.hw_lock) { |
| 360 | if (drm_i_have_hw_lock(filp)) { |
| 361 | dev->driver->reclaim_buffers_locked(dev, filp); |
| 362 | } else { |
| 363 | unsigned long _end=jiffies + 3*DRM_HZ; |
| 364 | int locked = 0; |
| 365 | |
| 366 | drm_idlelock_take(&dev->lock); |
| 367 | |
| 368 | /* |
| 369 | * Wait for a while. |
| 370 | */ |
| 371 | |
| 372 | do{ |
| 373 | spin_lock(&dev->lock.spinlock); |
| 374 | locked = dev->lock.idle_has_lock; |
| 375 | spin_unlock(&dev->lock.spinlock); |
| 376 | if (locked) |
| 377 | break; |
| 378 | schedule(); |
| 379 | } while (!time_after_eq(jiffies, _end)); |
| 380 | |
| 381 | if (!locked) { |
| 382 | DRM_ERROR("reclaim_buffers_locked() deadlock. Please rework this\n" |
| 383 | "\tdriver to use reclaim_buffers_idlelocked() instead.\n" |
| 384 | "\tI will go on reclaiming the buffers anyway.\n"); |
| 385 | } |
| 386 | |
| 387 | dev->driver->reclaim_buffers_locked(dev, filp); |
| 388 | drm_idlelock_release(&dev->lock); |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | if (dev->driver->reclaim_buffers_idlelocked && dev->lock.hw_lock) { |
| 393 | |
| 394 | drm_idlelock_take(&dev->lock); |
| 395 | dev->driver->reclaim_buffers_idlelocked(dev, filp); |
| 396 | drm_idlelock_release(&dev->lock); |
| 397 | |
| 398 | } |
| 399 | |
| 400 | if (drm_i_have_hw_lock(filp)) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 401 | DRM_DEBUG("File %p released, freeing lock for context %d\n", |
| 402 | filp, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); |
| 403 | |
Thomas Hellstrom | 040ac32 | 2007-03-23 13:28:33 +1100 | [diff] [blame^] | 404 | drm_lock_free(&dev->lock, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 405 | _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 407 | |
Thomas Hellstrom | 040ac32 | 2007-03-23 13:28:33 +1100 | [diff] [blame^] | 408 | |
Dave Airlie | 22eae94 | 2005-11-10 22:16:34 +1100 | [diff] [blame] | 409 | if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && |
| 410 | !dev->driver->reclaim_buffers_locked) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | dev->driver->reclaim_buffers(dev, filp); |
| 412 | } |
| 413 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 414 | drm_fasync(-1, filp, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 416 | mutex_lock(&dev->ctxlist_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 417 | if (dev->ctxlist && (!list_empty(&dev->ctxlist->head))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | drm_ctx_list_t *pos, *n; |
| 419 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 420 | list_for_each_entry_safe(pos, n, &dev->ctxlist->head, head) { |
| 421 | if (pos->tag == priv && |
| 422 | pos->handle != DRM_KERNEL_CONTEXT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | if (dev->driver->context_dtor) |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 424 | dev->driver->context_dtor(dev, |
| 425 | pos->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 427 | drm_ctxbitmap_free(dev, pos->handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 429 | list_del(&pos->head); |
| 430 | drm_free(pos, sizeof(*pos), DRM_MEM_CTXLIST); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | --dev->ctx_count; |
| 432 | } |
| 433 | } |
| 434 | } |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 435 | mutex_unlock(&dev->ctxlist_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 437 | mutex_lock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 438 | if (priv->remove_auth_on_close == 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | drm_file_t *temp = dev->file_first; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 440 | while (temp) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | temp->authenticated = 0; |
| 442 | temp = temp->next; |
| 443 | } |
| 444 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 445 | if (priv->prev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | priv->prev->next = priv->next; |
| 447 | } else { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 448 | dev->file_first = priv->next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 450 | if (priv->next) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | priv->next->prev = priv->prev; |
| 452 | } else { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 453 | dev->file_last = priv->prev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | } |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 455 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 456 | |
Dave Airlie | 22eae94 | 2005-11-10 22:16:34 +1100 | [diff] [blame] | 457 | if (dev->driver->postclose) |
| 458 | dev->driver->postclose(dev, priv); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 459 | drm_free(priv, sizeof(*priv), DRM_MEM_FILES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | |
| 461 | /* ======================================================== |
| 462 | * End inline drm_release |
| 463 | */ |
| 464 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 465 | atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); |
| 466 | spin_lock(&dev->count_lock); |
| 467 | if (!--dev->open_count) { |
| 468 | if (atomic_read(&dev->ioctl_count) || dev->blocked) { |
| 469 | DRM_ERROR("Device busy: %d %d\n", |
| 470 | atomic_read(&dev->ioctl_count), dev->blocked); |
| 471 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | unlock_kernel(); |
| 473 | return -EBUSY; |
| 474 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 475 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | unlock_kernel(); |
Dave Airlie | 22eae94 | 2005-11-10 22:16:34 +1100 | [diff] [blame] | 477 | return drm_lastclose(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 479 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | |
| 481 | unlock_kernel(); |
| 482 | |
| 483 | return retcode; |
| 484 | } |
| 485 | EXPORT_SYMBOL(drm_release); |
| 486 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | /** No-op. */ |
| 488 | unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait) |
| 489 | { |
| 490 | return 0; |
| 491 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 492 | EXPORT_SYMBOL(drm_poll); |