diff options
Diffstat (limited to 'drivers/char/drm/drm_drv.c')
| -rw-r--r-- | drivers/char/drm/drm_drv.c | 363 |
1 files changed, 183 insertions, 180 deletions
diff --git a/drivers/char/drm/drm_drv.c b/drivers/char/drm/drm_drv.c index 6ba48f346fc..4dff7554eb0 100644 --- a/drivers/char/drm/drm_drv.c +++ b/drivers/char/drm/drm_drv.c @@ -1,5 +1,5 @@ /** - * \file drm_drv.h + * \file drm_drv.c * Generic driver template * * \author Rickard E. (Rik) Faith <faith@valinux.com> @@ -55,67 +55,67 @@ 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 }, +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 }, + [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 }, + [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_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 }, + [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = {drm_wait_vblank, 0, 0}, }; #define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( drm_ioctls ) @@ -129,17 +129,17 @@ static drm_ioctl_desc_t drm_ioctls[] = { * * \sa drm_device */ -int drm_takedown( drm_device_t *dev ) +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" ); + DRM_DEBUG("\n"); if (dev->driver->pretakedown) - dev->driver->pretakedown(dev); + dev->driver->pretakedown(dev); DRM_DEBUG("driver pretakedown completed\n"); if (dev->unique) { @@ -148,95 +148,95 @@ int drm_takedown( drm_device_t *dev ) dev->unique_len = 0; } - if ( dev->irq_enabled ) drm_irq_uninstall( dev ); + if (dev->irq_enabled) + drm_irq_uninstall(dev); - down( &dev->struct_sem ); - del_timer( &dev->timer ); + 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 ) { + /* 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 ); + drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC); } dev->magiclist[i].head = dev->magiclist[i].tail = NULL; } - /* Clear AGP information */ + /* 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 ) { + /* 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 ); + 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); + drm_agp_release(dev); dev->agp->acquired = 0; - dev->agp->enabled = 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 ) { + /* 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 ); + drm_free(vma, sizeof(*vma), DRM_MEM_VMAS); } dev->vmalist = NULL; } - if( dev->maplist ) { + 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 ); + } + + 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 ); + 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 ); + drm_dma_takedown(dev); - if ( dev->lock.hw_lock ) { - dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */ + 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 ); + wake_up_interruptible(&dev->lock.lock_queue); } - up( &dev->struct_sem ); + 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). @@ -246,26 +246,28 @@ int drm_takedown( drm_device_t *dev ) * 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 ) +int drm_init(struct drm_driver *driver) { struct pci_dev *pdev = NULL; struct pci_device_id *pid; int i; - DRM_DEBUG( "\n" ); + DRM_DEBUG("\n"); drm_mem_init(); - for (i=0; driver->pci_driver.id_table[i].vendor != 0; i++) { + 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) { + + 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); @@ -273,62 +275,63 @@ int drm_init( struct drm_driver *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 ) +static void drm_cleanup(drm_device_t * dev) { - DRM_DEBUG( "\n" ); + DRM_DEBUG("\n"); if (!dev) { DRM_ERROR("cleanup called no dev\n"); return; } - drm_takedown( dev ); + drm_takedown(dev); if (dev->maplist) { drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS); dev->maplist = NULL; } - drm_ctxbitmap_cleanup( dev ); - + 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 ); + 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 ); + + 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" ); + if (drm_put_dev(dev)) + DRM_ERROR("Cannot unload module\n"); } -void drm_exit (struct drm_driver *driver) +void drm_exit(struct drm_driver *driver) { int i; drm_device_t *dev = NULL; drm_head_t *head; - - DRM_DEBUG( "\n" ); + + DRM_DEBUG("\n"); for (i = 0; i < drm_cards_limit; i++) { head = drm_heads[i]; @@ -336,9 +339,9 @@ void drm_exit (struct drm_driver *driver) continue; if (!head->dev) continue; - if (head->dev->driver!=driver) + if (head->dev->driver != driver) continue; - dev=head->dev; + dev = head->dev; } if (dev) { /* release the pci driver */ @@ -346,71 +349,70 @@ void drm_exit (struct drm_driver *driver) pci_dev_put(dev->pdev); drm_cleanup(dev); } - DRM_INFO( "Module unloaded\n" ); + 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 + .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) + + 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"); + 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); + drm_proc_root = proc_mkdir("dri", 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); + + DRM_INFO("Initialized %s %d.%d.%d %s\n", + CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); return 0; -err_p3: + err_p3: drm_sysfs_destroy(drm_class); -err_p2: + err_p2: unregister_chrdev(DRM_MAJOR, "drm"); drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB); -err_p1: + err_p1: return ret; } -static void __exit drm_core_exit (void) +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); + drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB); } - -module_init( drm_core_init ); -module_exit( drm_core_exit ); - +module_init(drm_core_init); +module_exit(drm_core_exit); /** * Get version information @@ -423,8 +425,8 @@ module_exit( drm_core_exit ); * * Fills in the version information in \p arg. */ -static int drm_version( struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long 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; @@ -432,21 +434,19 @@ static int drm_version( struct inode *inode, struct file *filp, drm_version_t version; int ret; - if ( copy_from_user( &version, argp, sizeof(version) ) ) + 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) ) ) + + 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. @@ -458,8 +458,8 @@ static int drm_version( struct inode *inode, struct file *filp, * 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 ) +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; @@ -468,40 +468,43 @@ int drm_ioctl( struct inode *inode, struct file *filp, unsigned int nr = DRM_IOCTL_NR(cmd); int retcode = -EINVAL; - atomic_inc( &dev->ioctl_count ); - atomic_inc( &dev->counts[_DRM_STAT_IOCTLS] ); + 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 ); - + 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)) + 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" ); + + if (!func) { + DRM_DEBUG("no function\n"); retcode = -EINVAL; - } else if ( ( ioctl->root_only && !capable( CAP_SYS_ADMIN ) )|| - ( ioctl->auth_needed && !priv->authenticated ) ) { + } else if ((ioctl->root_only && !capable(CAP_SYS_ADMIN)) || + (ioctl->auth_needed && !priv->authenticated)) { retcode = -EACCES; } else { - retcode = func( inode, filp, cmd, arg ); + retcode = func(inode, filp, cmd, arg); } - -err_i1: - atomic_dec( &dev->ioctl_count ); - if (retcode) DRM_DEBUG( "ret = %x\n", retcode); + + err_i1: + atomic_dec(&dev->ioctl_count); + if (retcode) + DRM_DEBUG("ret = %x\n", retcode); return retcode; } -EXPORT_SYMBOL(drm_ioctl); +EXPORT_SYMBOL(drm_ioctl); |