diff options
Diffstat (limited to 'linux-core/drm_drv.c')
| -rw-r--r-- | linux-core/drm_drv.c | 655 |
1 files changed, 0 insertions, 655 deletions
diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c deleted file mode 100644 index d3e2ca99..00000000 --- a/linux-core/drm_drv.c +++ /dev/null @@ -1,655 +0,0 @@ -/** - * \file drm_drv.c - * Generic driver template - * - * \author Rickard E. (Rik) Faith <faith@valinux.com> - * \author Gareth Hughes <gareth@valinux.com> - * - * To use this template, you must at least define the following (samples - * given for the MGA driver): - * - * \code - * #define DRIVER_AUTHOR "VA Linux Systems, Inc." - * - * #define DRIVER_NAME "mga" - * #define DRIVER_DESC "Matrox G200/G400" - * #define DRIVER_DATE "20001127" - * - * #define drm_x mga_##x - * \endcode - */ - -/* - * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com - * - * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. - * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - */ -#include "drmP.h" -#include "drm_core.h" - -static void drm_cleanup(struct drm_device * dev); -int drm_fb_loaded = 0; - -static int drm_version(struct drm_device *dev, void *data, - struct drm_file *file_priv); - -/** Ioctl table */ -static struct drm_ioctl_desc drm_ioctls[] = { - DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0), - DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), - DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), - DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0), - DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), - DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), - DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY), - - DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - - DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), - - DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), - - DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), - DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), - - DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - - DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), - DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), - - DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), - - DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), - DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), - DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), - /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */ - DRM_IOCTL_DEF(DRM_IOCTL_DMA, NULL, DRM_AUTH), - - DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - -#if __OS_HAS_AGP - DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), - DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), -#endif - - DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0), - - DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), - - DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - -#if OS_HAS_GEM - DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, 0), - DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH), - DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH), -#endif -}; - -#define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) - - -/** - * Take down the DRM device. - * - * \param dev DRM device structure. - * - * Frees every resource in \p dev. - * - * \sa drm_device - */ -int drm_lastclose(struct drm_device * dev) -{ - struct drm_magic_entry *pt, *next; - struct drm_map_list *r_list, *list_t; - struct drm_vma_entry *vma, *vma_temp; - int i; - - DRM_DEBUG("\n"); - - /* - * We can't do much about this function failing. - */ - - if (dev->driver->lastclose) - dev->driver->lastclose(dev); - DRM_DEBUG("driver lastclose completed\n"); - - if (dev->unique) { - drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER); - dev->unique = NULL; - dev->unique_len = 0; - } - - if (dev->irq_enabled) - drm_irq_uninstall(dev); - - /* Free drawable information memory */ - mutex_lock(&dev->struct_mutex); - - drm_drawable_free_all(dev); - del_timer(&dev->timer); - - if (dev->unique) { - drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER); - dev->unique = NULL; - dev->unique_len = 0; - } - - if (dev->magicfree.next) { - list_for_each_entry_safe(pt, next, &dev->magicfree, head) { - list_del(&pt->head); - drm_ht_remove_item(&dev->magiclist, &pt->hash_item); - drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC); - } - drm_ht_remove(&dev->magiclist); - } - - - /* Clear AGP information */ - if (drm_core_has_AGP(dev) && dev->agp) { - struct drm_agp_mem *entry, *tempe; - - /* Remove AGP resources, but leave dev->agp - intact until drv_cleanup is called. */ - list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) { - if (entry->bound) - drm_unbind_agp(entry->memory); - drm_free_agp(entry->memory, entry->pages); - drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); - } - INIT_LIST_HEAD(&dev->agp->memory); - - if (dev->agp->acquired) - drm_agp_release(dev); - - dev->agp->acquired = 0; - dev->agp->enabled = 0; - } - if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) { - drm_sg_cleanup(dev->sg); - dev->sg = NULL; - } - - /* Clear vma list (only built for debugging) */ - list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) { - list_del(&vma->head); - drm_ctl_free(vma, sizeof(*vma), DRM_MEM_VMAS); - } - - list_for_each_entry_safe(r_list, list_t, &dev->maplist, head) { - if (!(r_list->map->flags & _DRM_DRIVER)) { - drm_rmmap_locked(dev, r_list->map); - r_list = NULL; - } - } - - if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) { - for (i = 0; i < dev->queue_count; i++) { - - if (dev->queuelist[i]) { - drm_free(dev->queuelist[i], - sizeof(*dev->queuelist[0]), - DRM_MEM_QUEUES); - dev->queuelist[i] = NULL; - } - } - drm_free(dev->queuelist, - dev->queue_slots * sizeof(*dev->queuelist), - DRM_MEM_QUEUES); - dev->queuelist = NULL; - } - dev->queue_count = 0; - - if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) - drm_dma_takedown(dev); - - if (dev->lock.hw_lock) { - dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */ - dev->lock.file_priv = NULL; - wake_up_interruptible(&dev->lock.lock_queue); - } - mutex_unlock(&dev->struct_mutex); - - DRM_DEBUG("lastclose completed\n"); - return 0; -} - -void drm_cleanup_pci(struct pci_dev *pdev) -{ - struct drm_device *dev = pci_get_drvdata(pdev); - - pci_set_drvdata(pdev, NULL); - pci_release_regions(pdev); - if (dev) - drm_cleanup(dev); -} -EXPORT_SYMBOL(drm_cleanup_pci); - -/** - * Module initialization. Called via init_module at module load time, or via - * linux/init/main.c (this is not currently supported). - * - * \return zero on success or a negative number on failure. - * - * Initializes an array of drm_device structures, and attempts to - * initialize all available devices, using consecutive minors, registering the - * stubs and initializing the AGP device. - * - * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and - * after the initialization for driver customization. - */ -int drm_init(struct drm_driver *driver, - struct pci_device_id *pciidlist) -{ - struct pci_dev *pdev; - struct pci_device_id *pid; - int rc, i; - - DRM_DEBUG("\n"); - - for (i = 0; (pciidlist[i].vendor != 0) && !drm_fb_loaded; i++) { - pid = &pciidlist[i]; - - pdev = NULL; - /* pass back in pdev to account for multiple identical cards */ - while ((pdev = - pci_get_subsys(pid->vendor, pid->device, pid->subvendor, - pid->subdevice, pdev))) { - /* Are there device class requirements? */ - if ((pid->class != 0) - && ((pdev->class & pid->class_mask) != pid->class)) { - continue; - } - /* is there already a driver loaded, or (short circuit saves work) */ - /* does something like VesaFB have control of the memory region? */ - if (pci_dev_driver(pdev) - || pci_request_regions(pdev, "DRM scan")) { - /* go into stealth mode */ - drm_fb_loaded = 1; - pci_dev_put(pdev); - break; - } - /* no fbdev or vesadev, put things back and wait for normal probe */ - pci_release_regions(pdev); - } - } - - if (!drm_fb_loaded) - return pci_register_driver(&driver->pci_driver); - else { - for (i = 0; pciidlist[i].vendor != 0; i++) { - pid = &pciidlist[i]; - - pdev = NULL; - /* pass back in pdev to account for multiple identical cards */ - while ((pdev = - pci_get_subsys(pid->vendor, pid->device, - pid->subvendor, pid->subdevice, - pdev))) { - /* Are there device class requirements? */ - if ((pid->class != 0) - && ((pdev->class & pid->class_mask) != pid->class)) { - continue; - } - /* stealth mode requires a manual probe */ - pci_dev_get(pdev); - if ((rc = drm_get_dev(pdev, &pciidlist[i], driver))) { - pci_dev_put(pdev); - return rc; - } - } - } - DRM_INFO("Used old pci detect: framebuffer loaded\n"); - } - return 0; -} -EXPORT_SYMBOL(drm_init); - -/** - * Called via cleanup_module() at module unload time. - * - * Cleans up all DRM device, calling drm_lastclose(). - * - * \sa drm_init - */ -static void drm_cleanup(struct drm_device * dev) -{ - - DRM_DEBUG("\n"); - if (!dev) { - DRM_ERROR("cleanup called no dev\n"); - return; - } - - drm_lastclose(dev); - - drm_vblank_cleanup(dev); - - if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && dev->agp - && dev->agp->agp_mtrr >= 0) { - int retval; - retval = mtrr_del(dev->agp->agp_mtrr, - dev->agp->agp_info.aper_base, - dev->agp->agp_info.aper_size * 1024 * 1024); - DRM_DEBUG("mtrr_del=%d\n", retval); - } - - if (drm_core_has_AGP(dev) && dev->agp) { - drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS); - dev->agp = NULL; - } - if (dev->driver->unload) - dev->driver->unload(dev); - - if (!drm_fb_loaded) - pci_disable_device(dev->pdev); - - drm_ctxbitmap_cleanup(dev); - drm_ht_remove(&dev->map_hash); - - drm_put_minor(dev); - if (drm_put_dev(dev)) - DRM_ERROR("Cannot unload module\n"); -} - -int drm_minors_cleanup(int id, void *ptr, void *data) -{ - struct drm_minor *minor = ptr; - struct drm_device *dev; - struct drm_driver *driver = data; - - dev = minor->dev; - if (minor->dev->driver != driver) - return 0; - - if (minor->type != DRM_MINOR_LEGACY) - return 0; - - if (dev) - pci_dev_put(dev->pdev); - drm_cleanup(dev); - return 1; -} - -void drm_exit(struct drm_driver *driver) -{ - DRM_DEBUG("\n"); - if (drm_fb_loaded) { - idr_for_each(&drm_minors_idr, &drm_minors_cleanup, driver); - } else - pci_unregister_driver(&driver->pci_driver); - DRM_INFO("Module unloaded\n"); -} -EXPORT_SYMBOL(drm_exit); - -/** File operations structure */ -static const struct file_operations drm_stub_fops = { - .owner = THIS_MODULE, - .open = drm_stub_open -}; - -static int __init drm_core_init(void) -{ - int ret; - struct sysinfo si; - unsigned long avail_memctl_mem; - unsigned long max_memctl_mem; - - idr_init(&drm_minors_idr); - si_meminfo(&si); - - /* - * AGP only allows low / DMA32 memory ATM. - */ - - avail_memctl_mem = si.totalram - si.totalhigh; - - /* - * Avoid overflows - */ - - max_memctl_mem = 1UL << (32 - PAGE_SHIFT); - max_memctl_mem = (max_memctl_mem / si.mem_unit) * PAGE_SIZE; - - if (avail_memctl_mem >= max_memctl_mem) - avail_memctl_mem = max_memctl_mem; - - drm_init_memctl(avail_memctl_mem/2, avail_memctl_mem*3/4, si.mem_unit); - - ret = -ENOMEM; - - if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops)) - goto err_p1; - - drm_class = drm_sysfs_create(THIS_MODULE, "drm"); - if (IS_ERR(drm_class)) { - printk(KERN_ERR "DRM: Error creating drm class.\n"); - ret = PTR_ERR(drm_class); - goto err_p2; - } - - drm_proc_root = proc_mkdir("dri", NULL); - if (!drm_proc_root) { - DRM_ERROR("Cannot create /proc/dri\n"); - ret = -1; - goto err_p3; - } - - drm_mem_init(); - - DRM_INFO("Initialized %s %d.%d.%d %s\n", - CORE_NAME, - CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); - return 0; -err_p3: - drm_sysfs_destroy(); -err_p2: - unregister_chrdev(DRM_MAJOR, "drm"); - - idr_destroy(&drm_minors_idr); -err_p1: - return ret; -} - -static void __exit drm_core_exit(void) -{ - remove_proc_entry("dri", NULL); - drm_sysfs_destroy(); - - unregister_chrdev(DRM_MAJOR, "drm"); - - idr_destroy(&drm_minors_idr); -} - -module_init(drm_core_init); -module_exit(drm_core_exit); - -/** - * Get version information - * - * \param inode device inode. - * \param file_priv DRM file private. - * \param cmd command. - * \param arg user argument, pointing to a drm_version structure. - * \return zero on success or negative number on failure. - * - * Fills in the version information in \p arg. - */ -static int drm_version(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - struct drm_version *version = data; - int len; - - version->version_major = dev->driver->major; - version->version_minor = dev->driver->minor; - version->version_patchlevel = dev->driver->patchlevel; - DRM_COPY(version->name, dev->driver->name); - DRM_COPY(version->date, dev->driver->date); - DRM_COPY(version->desc, dev->driver->desc); - - return 0; -} - -/** - * Called whenever a process performs an ioctl on /dev/drm. - * - * \param inode device inode. - * \param file_priv DRM file private. - * \param cmd command. - * \param arg user argument. - * \return zero on success or negative number on failure. - * - * Looks up the ioctl function in the ::ioctls table, checking for root - * previleges if so required, and dispatches to the respective function. - * - * Copies data in and out according to the size and direction given in cmd, - * which must match the ioctl cmd known by the kernel. The kernel uses a 512 - * byte stack buffer to store the ioctl arguments in kernel space. Should we - * ever need much larger ioctl arguments, we may need to allocate memory. - */ -int drm_ioctl(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg) -{ - return drm_unlocked_ioctl(filp, cmd, arg); -} -EXPORT_SYMBOL(drm_ioctl); - -long drm_unlocked_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) -{ - struct drm_file *file_priv = filp->private_data; - struct drm_device *dev = file_priv->minor->dev; - struct drm_ioctl_desc *ioctl; - drm_ioctl_t *func; - unsigned int nr = DRM_IOCTL_NR(cmd); - int retcode = -EINVAL; - char kdata[512]; - - atomic_inc(&dev->ioctl_count); - atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); - ++file_priv->ioctl_count; - - DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n", - current->pid, cmd, nr, (long)old_encode_dev(file_priv->minor->device), - file_priv->authenticated); - - if ((nr >= DRM_CORE_IOCTL_COUNT) && - ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END))) - goto err_i1; - if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) - && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) - ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; - else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) { - ioctl = &drm_ioctls[nr]; - cmd = ioctl->cmd; - } else { - retcode = -EINVAL; - goto err_i1; - } -#if 0 - /* - * This check is disabled, because driver private ioctl->cmd - * are not the ioctl commands with size and direction bits but - * just the indices. The DRM core ioctl->cmd are the proper ioctl - * commands. The drivers' ioctl tables need to be fixed. - */ - if (ioctl->cmd != cmd) { - retcode = -EINVAL; - goto err_i1; - } -#endif - - func = ioctl->func; - /* is there a local override? */ - if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl) - func = dev->driver->dma_ioctl; - - if (cmd & IOC_IN) { - if (copy_from_user(kdata, (void __user *)arg, - _IOC_SIZE(cmd)) != 0) { - retcode = -EACCES; - goto err_i1; - } - } - - if (!func) { - DRM_DEBUG("no function\n"); - retcode = -EINVAL; - } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) || - ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || - ((ioctl->flags & DRM_MASTER) && !file_priv->master)) { - retcode = -EACCES; - } else { - retcode = func(dev, kdata, file_priv); - } - - if (cmd & IOC_OUT) { - if (copy_to_user((void __user *)arg, kdata, - _IOC_SIZE(cmd)) != 0) - retcode = -EACCES; - } - -err_i1: - atomic_dec(&dev->ioctl_count); - if (retcode) - DRM_DEBUG("ret = %d\n", retcode); - return retcode; -} -EXPORT_SYMBOL(drm_unlocked_ioctl); - -drm_local_map_t *drm_getsarea(struct drm_device *dev) -{ - struct drm_map_list *entry; - - list_for_each_entry(entry, &dev->maplist, head) { - if (entry->map && entry->map->type == _DRM_SHM && - (entry->map->flags & _DRM_CONTAINS_LOCK)) { - return entry->map; - } - } - return NULL; -} -EXPORT_SYMBOL(drm_getsarea); |