diff options
Diffstat (limited to 'drivers/char/drm/drm_drv.c')
| -rw-r--r-- | drivers/char/drm/drm_drv.c | 507 |
1 files changed, 0 insertions, 507 deletions
diff --git a/drivers/char/drm/drm_drv.c b/drivers/char/drm/drm_drv.c deleted file mode 100644 index 6ba48f346fc..00000000000 --- a/drivers/char/drm/drm_drv.c +++ /dev/null @@ -1,507 +0,0 @@ -/** - * \file drm_drv.h - * 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 DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( mga_ioctls ) - * - * #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 int drm_version(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg); - -/** Ioctl table */ -static drm_ioctl_desc_t drm_ioctls[] = { - [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { drm_version, 0, 0 }, - [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = { drm_getunique, 0, 0 }, - [DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = { drm_getmagic, 0, 0 }, - [DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = { drm_irq_by_busid, 0, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)] = { drm_getmap, 0, 0 }, - [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)] = { drm_getclient, 0, 0 }, - [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)] = { drm_getstats, 0, 0 }, - [DRM_IOCTL_NR(DRM_IOCTL_SET_VERSION)] = { drm_setversion, 0, 1 }, - - [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = { drm_setunique, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = { drm_noop, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = { drm_noop, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = { drm_authmagic, 1, 1 }, - - [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = { drm_addmap_ioctl,1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)] = { drm_rmmap_ioctl, 1, 0 }, - - [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = { drm_setsareactx, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = { drm_getsareactx, 1, 0 }, - - [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = { drm_addctx, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = { drm_rmctx, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = { drm_modctx, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = { drm_getctx, 1, 0 }, - [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = { drm_switchctx, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = { drm_newctx, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = { drm_resctx, 1, 0 }, - - [DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = { drm_adddraw, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = { drm_rmdraw, 1, 1 }, - - [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = { drm_lock, 1, 0 }, - [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { drm_unlock, 1, 0 }, - - [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { drm_noop, 1, 0 }, - - [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = { drm_addbufs, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = { drm_markbufs, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = { drm_infobufs, 1, 0 }, - [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = { drm_mapbufs, 1, 0 }, - [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = { drm_freebufs, 1, 0 }, - /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */ - - [DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = { drm_control, 1, 1 }, - -#if __OS_HAS_AGP - [DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = { drm_agp_acquire_ioctl, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = { drm_agp_release_ioctl, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = { drm_agp_enable_ioctl, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = { drm_agp_info_ioctl, 1, 0 }, - [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = { drm_agp_alloc, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = { drm_agp_free, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = { drm_agp_bind, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = { drm_agp_unbind, 1, 1 }, -#endif - - [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)] = { drm_sg_alloc, 1, 1 }, - [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = { drm_sg_free, 1, 1 }, - - [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = { drm_wait_vblank, 0, 0 }, -}; - -#define DRIVER_IOCTL_COUNT DRM_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_takedown( drm_device_t *dev ) -{ - drm_magic_entry_t *pt, *next; - drm_map_list_t *r_list; - drm_vma_entry_t *vma, *vma_next; - int i; - - DRM_DEBUG( "\n" ); - - if (dev->driver->pretakedown) - dev->driver->pretakedown(dev); - DRM_DEBUG("driver pretakedown 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 ); - - down( &dev->struct_sem ); - del_timer( &dev->timer ); - - /* Clear pid list */ - for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) { - for ( pt = dev->magiclist[i].head ; pt ; pt = next ) { - next = pt->next; - drm_free( pt, sizeof(*pt), DRM_MEM_MAGIC ); - } - dev->magiclist[i].head = dev->magiclist[i].tail = NULL; - } - - /* Clear AGP information */ - if (drm_core_has_AGP(dev) && dev->agp) { - drm_agp_mem_t *entry; - drm_agp_mem_t *nexte; - - /* Remove AGP resources, but leave dev->agp - intact until drv_cleanup is called. */ - for ( entry = dev->agp->memory ; entry ; entry = nexte ) { - nexte = entry->next; - if ( entry->bound ) drm_unbind_agp( entry->memory ); - drm_free_agp( entry->memory, entry->pages ); - drm_free( entry, sizeof(*entry), DRM_MEM_AGPLISTS ); - } - dev->agp->memory = NULL; - - 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) */ - if ( dev->vmalist ) { - for ( vma = dev->vmalist ; vma ; vma = vma_next ) { - vma_next = vma->next; - drm_free( vma, sizeof(*vma), DRM_MEM_VMAS ); - } - dev->vmalist = NULL; - } - - if( dev->maplist ) { - while (!list_empty(&dev->maplist->head)) { - struct list_head *list = dev->maplist->head.next; - r_list = list_entry(list, drm_map_list_t, head); - drm_rmmap_locked(dev, r_list->map); - } - } - - 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.filp = NULL; - wake_up_interruptible( &dev->lock.lock_queue ); - } - up( &dev->struct_sem ); - - DRM_DEBUG("takedown completed\n"); - return 0; -} - - - -/** - * 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_dev *pdev = NULL; - struct pci_device_id *pid; - int i; - - DRM_DEBUG( "\n" ); - - drm_mem_init(); - - for (i=0; driver->pci_driver.id_table[i].vendor != 0; i++) { - pid = (struct pci_device_id *)&driver->pci_driver.id_table[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)) != NULL) { - /* stealth mode requires a manual probe */ - pci_dev_get(pdev); - drm_get_dev(pdev, pid, driver); - } - } - return 0; -} -EXPORT_SYMBOL(drm_init); - -/** - * Called via cleanup_module() at module unload time. - * - * Cleans up all DRM device, calling takedown(). - * - * \sa drm_init - */ -static void drm_cleanup( drm_device_t *dev ) -{ - DRM_DEBUG( "\n" ); - - if (!dev) { - DRM_ERROR("cleanup called no dev\n"); - return; - } - - drm_takedown( dev ); - - if (dev->maplist) { - drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS); - dev->maplist = NULL; - } - - drm_ctxbitmap_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->postcleanup) - dev->driver->postcleanup(dev); - - drm_put_head(&dev->primary); - if ( drm_put_dev(dev) ) - DRM_ERROR( "Cannot unload module\n" ); -} - -void drm_exit (struct drm_driver *driver) -{ - int i; - drm_device_t *dev = NULL; - drm_head_t *head; - - DRM_DEBUG( "\n" ); - - for (i = 0; i < drm_cards_limit; i++) { - head = drm_heads[i]; - if (!head) - continue; - if (!head->dev) - continue; - if (head->dev->driver!=driver) - continue; - dev=head->dev; - } - if (dev) { - /* release the pci driver */ - if (dev->pdev) - pci_dev_put(dev->pdev); - drm_cleanup(dev); - } - DRM_INFO( "Module unloaded\n" ); -} -EXPORT_SYMBOL(drm_exit); - -/** File operations structure */ -static struct file_operations drm_stub_fops = { - .owner = THIS_MODULE, - .open = drm_stub_open -}; - -static int __init drm_core_init(void) -{ - int ret = -ENOMEM; - - drm_cards_limit = (drm_cards_limit < DRM_MAX_MINOR + 1 ? drm_cards_limit : DRM_MAX_MINOR + 1); - drm_heads = drm_calloc(drm_cards_limit, - sizeof(*drm_heads), DRM_MEM_STUB); - if(!drm_heads) - goto err_p1; - - 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 = create_proc_entry("dri", S_IFDIR, NULL); - if (!drm_proc_root) { - DRM_ERROR("Cannot create /proc/dri\n"); - ret = -1; - goto err_p3; - } - - 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(drm_class); -err_p2: - unregister_chrdev(DRM_MAJOR, "drm"); - drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB); -err_p1: - return ret; -} - -static void __exit drm_core_exit (void) -{ - remove_proc_entry("dri", NULL); - drm_sysfs_destroy(drm_class); - - unregister_chrdev(DRM_MAJOR, "drm"); - - drm_free(drm_heads, sizeof(*drm_heads) * - drm_cards_limit, DRM_MEM_STUB); -} - - -module_init( drm_core_init ); -module_exit( drm_core_exit ); - - -/** - * Get version information - * - * \param inode device inode. - * \param filp file pointer. - * \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 inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg ) -{ - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->head->dev; - drm_version_t __user *argp = (void __user *)arg; - drm_version_t version; - int ret; - - if ( copy_from_user( &version, argp, sizeof(version) ) ) - return -EFAULT; - - /* version is a required function to return the personality module version */ - if ((ret = dev->driver->version(&version))) - return ret; - - if ( copy_to_user( argp, &version, sizeof(version) ) ) - return -EFAULT; - return 0; -} - - - -/** - * Called whenever a process performs an ioctl on /dev/drm. - * - * \param inode device inode. - * \param filp file pointer. - * \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. - */ -int drm_ioctl( struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg ) -{ - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->head->dev; - drm_ioctl_desc_t *ioctl; - drm_ioctl_t *func; - unsigned int nr = DRM_IOCTL_NR(cmd); - int retcode = -EINVAL; - - atomic_inc( &dev->ioctl_count ); - atomic_inc( &dev->counts[_DRM_STAT_IOCTLS] ); - ++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(priv->head->device), - priv->authenticated ); - - if (nr < DRIVER_IOCTL_COUNT) - ioctl = &drm_ioctls[nr]; - else if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) - ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE]; - else - goto err_i1; - - 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 ( !func ) { - DRM_DEBUG( "no function\n" ); - retcode = -EINVAL; - } else if ( ( ioctl->root_only && !capable( CAP_SYS_ADMIN ) )|| - ( ioctl->auth_needed && !priv->authenticated ) ) { - retcode = -EACCES; - } else { - retcode = func( inode, filp, cmd, arg ); - } - -err_i1: - atomic_dec( &dev->ioctl_count ); - if (retcode) DRM_DEBUG( "ret = %x\n", retcode); - return retcode; -} -EXPORT_SYMBOL(drm_ioctl); - |