19edbd4a0SFrançois Tigeot /* 224edb884SFrançois Tigeot * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org 39edbd4a0SFrançois Tigeot * 424edb884SFrançois Tigeot * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California. 57f3c3d6fSHasso Tepper * All Rights Reserved. 67f3c3d6fSHasso Tepper * 724edb884SFrançois Tigeot * Author Rickard E. (Rik) Faith <faith@valinux.com> 824edb884SFrançois Tigeot * 97f3c3d6fSHasso Tepper * Permission is hereby granted, free of charge, to any person obtaining a 107f3c3d6fSHasso Tepper * copy of this software and associated documentation files (the "Software"), 117f3c3d6fSHasso Tepper * to deal in the Software without restriction, including without limitation 127f3c3d6fSHasso Tepper * the rights to use, copy, modify, merge, publish, distribute, sublicense, 137f3c3d6fSHasso Tepper * and/or sell copies of the Software, and to permit persons to whom the 147f3c3d6fSHasso Tepper * Software is furnished to do so, subject to the following conditions: 157f3c3d6fSHasso Tepper * 167f3c3d6fSHasso Tepper * The above copyright notice and this permission notice (including the next 177f3c3d6fSHasso Tepper * paragraph) shall be included in all copies or substantial portions of the 187f3c3d6fSHasso Tepper * Software. 197f3c3d6fSHasso Tepper * 207f3c3d6fSHasso Tepper * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 217f3c3d6fSHasso Tepper * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 227f3c3d6fSHasso Tepper * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 2324edb884SFrançois Tigeot * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 247f3c3d6fSHasso Tepper * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 2524edb884SFrançois Tigeot * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 2624edb884SFrançois Tigeot * DEALINGS IN THE SOFTWARE. 277f3c3d6fSHasso Tepper */ 287f3c3d6fSHasso Tepper 2924edb884SFrançois Tigeot #include <linux/module.h> 3024edb884SFrançois Tigeot #include <linux/moduleparam.h> 3124edb884SFrançois Tigeot #include <drm/drmP.h> 3224edb884SFrançois Tigeot #include <drm/drm_core.h> 3324edb884SFrançois Tigeot #include "drm_legacy.h" 341b13d190SFrançois Tigeot #include "drm_internal.h" 3524edb884SFrançois Tigeot 368621f407SFrançois Tigeot /* 378621f407SFrançois Tigeot * drm_debug: Enable debug output. 388621f407SFrançois Tigeot * Bitmask of DRM_UT_x. See include/drm/drmP.h for details. 398621f407SFrançois Tigeot */ 4091fff950Szrj #ifdef __DragonFly__ 418621f407SFrançois Tigeot /* Provides three levels of debug: off, minimal, verbose */ 4291fff950Szrj #if DRM_DEBUG_DEFAULT_ON == 1 4391fff950Szrj #define DRM_DEBUGBITS_ON (DRM_UT_CORE | DRM_UT_DRIVER | DRM_UT_KMS | \ 4491fff950Szrj DRM_UT_PRIME| DRM_UT_ATOMIC | DRM_UT_FIOCTL) 4591fff950Szrj #elif DRM_DEBUG_DEFAULT_ON == 2 4691fff950Szrj #define DRM_DEBUGBITS_ON (DRM_UT_CORE | DRM_UT_DRIVER | DRM_UT_KMS | \ 4791fff950Szrj DRM_UT_PRIME| DRM_UT_ATOMIC | DRM_UT_FIOCTL | \ 4891fff950Szrj DRM_UT_PID | DRM_UT_IOCTL | DRM_UT_VBLANK) 4991fff950Szrj #else 5091fff950Szrj #define DRM_DEBUGBITS_ON (0x0) 5191fff950Szrj #endif 5291fff950Szrj unsigned int drm_debug = DRM_DEBUGBITS_ON; /* defaults to 0 */ 5391fff950Szrj #else 548621f407SFrançois Tigeot unsigned int drm_debug = 0; 5591fff950Szrj #endif /* __DragonFly__ */ 5624edb884SFrançois Tigeot EXPORT_SYMBOL(drm_debug); 5724edb884SFrançois Tigeot 5824edb884SFrançois Tigeot MODULE_AUTHOR(CORE_AUTHOR); 5924edb884SFrançois Tigeot MODULE_DESCRIPTION(CORE_DESC); 608621f407SFrançois Tigeot MODULE_PARM_DESC(debug, "Enable debug output, where each bit enables a debug category.\n" 618621f407SFrançois Tigeot "\t\tBit 0 (0x01) will enable CORE messages (drm core code)\n" 628621f407SFrançois Tigeot "\t\tBit 1 (0x02) will enable DRIVER messages (drm controller code)\n" 638621f407SFrançois Tigeot "\t\tBit 2 (0x04) will enable KMS messages (modesetting code)\n" 648621f407SFrançois Tigeot "\t\tBit 3 (0x08) will enable PRIME messages (prime code)\n" 658621f407SFrançois Tigeot "\t\tBit 4 (0x10) will enable ATOMIC messages (atomic code)\n" 668621f407SFrançois Tigeot "\t\tBit 5 (0x20) will enable VBL messages (vblank code)"); 6724edb884SFrançois Tigeot module_param_named(debug, drm_debug, int, 0600); 6824edb884SFrançois Tigeot 69*fcf17be7SFrançois Tigeot static DEFINE_MUTEX(drm_minor_lock); 7024edb884SFrançois Tigeot static struct idr drm_minors_idr; 7124edb884SFrançois Tigeot 7224edb884SFrançois Tigeot #if 0 7324edb884SFrançois Tigeot static struct dentry *drm_debugfs_root; 7424edb884SFrançois Tigeot #endif 7524edb884SFrançois Tigeot 7691fff950Szrj void drm_err(const char *func, const char *format, ...) 7724edb884SFrançois Tigeot { 789286b91eSSascha Wildner va_list args; 7924edb884SFrançois Tigeot 8091fff950Szrj kprintf("error: [" DRM_NAME ":pid%d:%s] *ERROR* ", DRM_CURRENTPID, func); 8124edb884SFrançois Tigeot 829286b91eSSascha Wildner va_start(args, format); 8391fff950Szrj kvprintf(format, args); 849286b91eSSascha Wildner va_end(args); 8524edb884SFrançois Tigeot } 8624edb884SFrançois Tigeot EXPORT_SYMBOL(drm_err); 8724edb884SFrançois Tigeot 8824edb884SFrançois Tigeot void drm_ut_debug_printk(const char *function_name, const char *format, ...) 8924edb884SFrançois Tigeot { 909286b91eSSascha Wildner va_list args; 9124edb884SFrançois Tigeot 9291fff950Szrj if (unlikely(drm_debug & DRM_UT_PID)) { 9391fff950Szrj kprintf("[" DRM_NAME ":pid%d:%s] ", 9491fff950Szrj DRM_CURRENTPID, function_name); 9591fff950Szrj } else { 9691fff950Szrj kprintf("[" DRM_NAME ":%s] ", function_name); 9791fff950Szrj } 9824edb884SFrançois Tigeot 999286b91eSSascha Wildner va_start(args, format); 10091fff950Szrj kvprintf(format, args); 1019286b91eSSascha Wildner va_end(args); 10224edb884SFrançois Tigeot } 10324edb884SFrançois Tigeot EXPORT_SYMBOL(drm_ut_debug_printk); 10424edb884SFrançois Tigeot 10524edb884SFrançois Tigeot #if 0 10624edb884SFrançois Tigeot struct drm_master *drm_master_create(struct drm_minor *minor) 10724edb884SFrançois Tigeot { 10824edb884SFrançois Tigeot struct drm_master *master; 10924edb884SFrançois Tigeot 11024edb884SFrançois Tigeot master = kzalloc(sizeof(*master), GFP_KERNEL); 11124edb884SFrançois Tigeot if (!master) 11224edb884SFrançois Tigeot return NULL; 11324edb884SFrançois Tigeot 11424edb884SFrançois Tigeot kref_init(&master->refcount); 11524edb884SFrançois Tigeot spin_lock_init(&master->lock.spinlock); 11624edb884SFrançois Tigeot init_waitqueue_head(&master->lock.lock_queue); 11724edb884SFrançois Tigeot if (drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER)) { 11824edb884SFrançois Tigeot kfree(master); 11924edb884SFrançois Tigeot return NULL; 12024edb884SFrançois Tigeot } 12124edb884SFrançois Tigeot master->minor = minor; 12224edb884SFrançois Tigeot 12324edb884SFrançois Tigeot return master; 12424edb884SFrançois Tigeot } 12524edb884SFrançois Tigeot 12624edb884SFrançois Tigeot struct drm_master *drm_master_get(struct drm_master *master) 12724edb884SFrançois Tigeot { 12824edb884SFrançois Tigeot kref_get(&master->refcount); 12924edb884SFrançois Tigeot return master; 13024edb884SFrançois Tigeot } 13124edb884SFrançois Tigeot EXPORT_SYMBOL(drm_master_get); 13224edb884SFrançois Tigeot 13324edb884SFrançois Tigeot static void drm_master_destroy(struct kref *kref) 13424edb884SFrançois Tigeot { 13524edb884SFrançois Tigeot struct drm_master *master = container_of(kref, struct drm_master, refcount); 13624edb884SFrançois Tigeot struct drm_device *dev = master->minor->dev; 13724edb884SFrançois Tigeot struct drm_map_list *r_list, *list_temp; 13824edb884SFrançois Tigeot 13924edb884SFrançois Tigeot if (dev->driver->master_destroy) 14024edb884SFrançois Tigeot dev->driver->master_destroy(dev, master); 14124edb884SFrançois Tigeot 1428621f407SFrançois Tigeot mutex_lock(&dev->struct_mutex); 14324edb884SFrançois Tigeot list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) { 14424edb884SFrançois Tigeot if (r_list->master == master) { 1451b13d190SFrançois Tigeot drm_legacy_rmmap_locked(dev, r_list->map); 14624edb884SFrançois Tigeot r_list = NULL; 14724edb884SFrançois Tigeot } 14824edb884SFrançois Tigeot } 14924edb884SFrançois Tigeot 15024edb884SFrançois Tigeot if (master->unique) { 15124edb884SFrançois Tigeot kfree(master->unique); 15224edb884SFrançois Tigeot master->unique = NULL; 15324edb884SFrançois Tigeot master->unique_len = 0; 15424edb884SFrançois Tigeot } 15524edb884SFrançois Tigeot 15624edb884SFrançois Tigeot drm_ht_remove(&master->magiclist); 15724edb884SFrançois Tigeot 15824edb884SFrançois Tigeot mutex_unlock(&dev->struct_mutex); 15924edb884SFrançois Tigeot kfree(master); 16024edb884SFrançois Tigeot } 16124edb884SFrançois Tigeot 16224edb884SFrançois Tigeot void drm_master_put(struct drm_master **master) 16324edb884SFrançois Tigeot { 16424edb884SFrançois Tigeot kref_put(&(*master)->refcount, drm_master_destroy); 16524edb884SFrançois Tigeot *master = NULL; 16624edb884SFrançois Tigeot } 16724edb884SFrançois Tigeot EXPORT_SYMBOL(drm_master_put); 16824edb884SFrançois Tigeot #endif 16924edb884SFrançois Tigeot 17024edb884SFrançois Tigeot int drm_setmaster_ioctl(struct drm_device *dev, void *data, 17124edb884SFrançois Tigeot struct drm_file *file_priv) 17224edb884SFrançois Tigeot { 17324edb884SFrançois Tigeot DRM_DEBUG("setmaster\n"); 17424edb884SFrançois Tigeot 17524edb884SFrançois Tigeot if (file_priv->master != 0) 17624edb884SFrançois Tigeot return (0); 17724edb884SFrançois Tigeot 17824edb884SFrançois Tigeot return (-EPERM); 17924edb884SFrançois Tigeot } 18024edb884SFrançois Tigeot 18124edb884SFrançois Tigeot int drm_dropmaster_ioctl(struct drm_device *dev, void *data, 18224edb884SFrançois Tigeot struct drm_file *file_priv) 18324edb884SFrançois Tigeot { 18424edb884SFrançois Tigeot DRM_DEBUG("dropmaster\n"); 18524edb884SFrançois Tigeot if (file_priv->master != 0) 18624edb884SFrançois Tigeot return -EINVAL; 18724edb884SFrançois Tigeot return 0; 18824edb884SFrançois Tigeot } 18924edb884SFrançois Tigeot 19024edb884SFrançois Tigeot /* 19124edb884SFrançois Tigeot * DRM Minors 19224edb884SFrançois Tigeot * A DRM device can provide several char-dev interfaces on the DRM-Major. Each 19324edb884SFrançois Tigeot * of them is represented by a drm_minor object. Depending on the capabilities 19424edb884SFrançois Tigeot * of the device-driver, different interfaces are registered. 19524edb884SFrançois Tigeot * 19624edb884SFrançois Tigeot * Minors can be accessed via dev->$minor_name. This pointer is either 19724edb884SFrançois Tigeot * NULL or a valid drm_minor pointer and stays valid as long as the device is 19824edb884SFrançois Tigeot * valid. This means, DRM minors have the same life-time as the underlying 19924edb884SFrançois Tigeot * device. However, this doesn't mean that the minor is active. Minors are 20024edb884SFrançois Tigeot * registered and unregistered dynamically according to device-state. 20124edb884SFrançois Tigeot */ 20224edb884SFrançois Tigeot 20324edb884SFrançois Tigeot static struct drm_minor **drm_minor_get_slot(struct drm_device *dev, 20424edb884SFrançois Tigeot unsigned int type) 20524edb884SFrançois Tigeot { 20624edb884SFrançois Tigeot switch (type) { 20724edb884SFrançois Tigeot case DRM_MINOR_LEGACY: 20824edb884SFrançois Tigeot return &dev->primary; 20924edb884SFrançois Tigeot case DRM_MINOR_RENDER: 21024edb884SFrançois Tigeot return &dev->render; 21124edb884SFrançois Tigeot case DRM_MINOR_CONTROL: 21224edb884SFrançois Tigeot return &dev->control; 21324edb884SFrançois Tigeot default: 21424edb884SFrançois Tigeot return NULL; 21524edb884SFrançois Tigeot } 21624edb884SFrançois Tigeot } 21724edb884SFrançois Tigeot 21824edb884SFrançois Tigeot static int drm_minor_alloc(struct drm_device *dev, unsigned int type) 21924edb884SFrançois Tigeot { 22024edb884SFrançois Tigeot struct drm_minor *minor; 22124edb884SFrançois Tigeot unsigned long flags; 22224edb884SFrançois Tigeot int r; 22324edb884SFrançois Tigeot 22424edb884SFrançois Tigeot minor = kzalloc(sizeof(*minor), GFP_KERNEL); 22524edb884SFrançois Tigeot if (!minor) 22624edb884SFrançois Tigeot return -ENOMEM; 22724edb884SFrançois Tigeot 22824edb884SFrançois Tigeot minor->type = type; 22924edb884SFrançois Tigeot minor->dev = dev; 23024edb884SFrançois Tigeot 23124edb884SFrançois Tigeot idr_preload(GFP_KERNEL); 23224edb884SFrançois Tigeot spin_lock_irqsave(&drm_minor_lock, flags); 23324edb884SFrançois Tigeot r = idr_alloc(&drm_minors_idr, 23424edb884SFrançois Tigeot NULL, 23524edb884SFrançois Tigeot 64 * type, 23624edb884SFrançois Tigeot 64 * (type + 1), 23724edb884SFrançois Tigeot GFP_NOWAIT); 23824edb884SFrançois Tigeot spin_unlock_irqrestore(&drm_minor_lock, flags); 23924edb884SFrançois Tigeot idr_preload_end(); 24024edb884SFrançois Tigeot 24124edb884SFrançois Tigeot if (r < 0) 24224edb884SFrançois Tigeot goto err_free; 24324edb884SFrançois Tigeot 24424edb884SFrançois Tigeot minor->index = r; 24524edb884SFrançois Tigeot 246*fcf17be7SFrançois Tigeot #if 0 24724edb884SFrançois Tigeot minor->kdev = drm_sysfs_minor_alloc(minor); 24824edb884SFrançois Tigeot if (IS_ERR(minor->kdev)) { 24924edb884SFrançois Tigeot r = PTR_ERR(minor->kdev); 25024edb884SFrançois Tigeot goto err_index; 25124edb884SFrançois Tigeot } 252*fcf17be7SFrançois Tigeot #endif 25324edb884SFrançois Tigeot 25424edb884SFrançois Tigeot *drm_minor_get_slot(dev, type) = minor; 25524edb884SFrançois Tigeot return 0; 25624edb884SFrançois Tigeot 257*fcf17be7SFrançois Tigeot #if 0 25824edb884SFrançois Tigeot err_index: 25924edb884SFrançois Tigeot spin_lock_irqsave(&drm_minor_lock, flags); 26024edb884SFrançois Tigeot idr_remove(&drm_minors_idr, minor->index); 26124edb884SFrançois Tigeot spin_unlock_irqrestore(&drm_minor_lock, flags); 262*fcf17be7SFrançois Tigeot #endif 26324edb884SFrançois Tigeot err_free: 26424edb884SFrançois Tigeot kfree(minor); 26524edb884SFrançois Tigeot return r; 26624edb884SFrançois Tigeot } 26724edb884SFrançois Tigeot 26824edb884SFrançois Tigeot static void drm_minor_free(struct drm_device *dev, unsigned int type) 26924edb884SFrançois Tigeot { 27024edb884SFrançois Tigeot struct drm_minor **slot, *minor; 27124edb884SFrançois Tigeot unsigned long flags; 27224edb884SFrançois Tigeot 27324edb884SFrançois Tigeot slot = drm_minor_get_slot(dev, type); 27424edb884SFrançois Tigeot minor = *slot; 27524edb884SFrançois Tigeot if (!minor) 27624edb884SFrançois Tigeot return; 27724edb884SFrançois Tigeot 278*fcf17be7SFrançois Tigeot #if 0 27924edb884SFrançois Tigeot put_device(minor->kdev); 280*fcf17be7SFrançois Tigeot #endif 28124edb884SFrançois Tigeot 28224edb884SFrançois Tigeot spin_lock_irqsave(&drm_minor_lock, flags); 28324edb884SFrançois Tigeot idr_remove(&drm_minors_idr, minor->index); 28424edb884SFrançois Tigeot spin_unlock_irqrestore(&drm_minor_lock, flags); 28524edb884SFrançois Tigeot 28624edb884SFrançois Tigeot kfree(minor); 28724edb884SFrançois Tigeot *slot = NULL; 28824edb884SFrançois Tigeot } 28924edb884SFrançois Tigeot 29024edb884SFrançois Tigeot static int drm_minor_register(struct drm_device *dev, unsigned int type) 29124edb884SFrançois Tigeot { 29224edb884SFrançois Tigeot struct drm_minor *minor; 29324edb884SFrançois Tigeot unsigned long flags; 294*fcf17be7SFrançois Tigeot #if 0 29524edb884SFrançois Tigeot int ret; 296*fcf17be7SFrançois Tigeot #endif 29724edb884SFrançois Tigeot 29824edb884SFrançois Tigeot DRM_DEBUG("\n"); 29924edb884SFrançois Tigeot 30024edb884SFrançois Tigeot minor = *drm_minor_get_slot(dev, type); 30124edb884SFrançois Tigeot if (!minor) 30224edb884SFrançois Tigeot return 0; 30324edb884SFrançois Tigeot 304*fcf17be7SFrançois Tigeot #if 0 30524edb884SFrançois Tigeot ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root); 30624edb884SFrançois Tigeot if (ret) { 30724edb884SFrançois Tigeot DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n"); 30824edb884SFrançois Tigeot return ret; 30924edb884SFrançois Tigeot } 31024edb884SFrançois Tigeot 31124edb884SFrançois Tigeot ret = device_add(minor->kdev); 31224edb884SFrançois Tigeot if (ret) 31324edb884SFrançois Tigeot goto err_debugfs; 314*fcf17be7SFrançois Tigeot #endif 31524edb884SFrançois Tigeot 31624edb884SFrançois Tigeot /* replace NULL with @minor so lookups will succeed from now on */ 31724edb884SFrançois Tigeot spin_lock_irqsave(&drm_minor_lock, flags); 31824edb884SFrançois Tigeot idr_replace(&drm_minors_idr, minor, minor->index); 31924edb884SFrançois Tigeot spin_unlock_irqrestore(&drm_minor_lock, flags); 32024edb884SFrançois Tigeot 32124edb884SFrançois Tigeot DRM_DEBUG("new minor registered %d\n", minor->index); 32224edb884SFrançois Tigeot return 0; 32324edb884SFrançois Tigeot 324*fcf17be7SFrançois Tigeot #if 0 32524edb884SFrançois Tigeot err_debugfs: 32624edb884SFrançois Tigeot drm_debugfs_cleanup(minor); 32724edb884SFrançois Tigeot return ret; 328*fcf17be7SFrançois Tigeot #endif 32924edb884SFrançois Tigeot } 33024edb884SFrançois Tigeot 33124edb884SFrançois Tigeot static void drm_minor_unregister(struct drm_device *dev, unsigned int type) 33224edb884SFrançois Tigeot { 33324edb884SFrançois Tigeot struct drm_minor *minor; 33424edb884SFrançois Tigeot unsigned long flags; 33524edb884SFrançois Tigeot 33624edb884SFrançois Tigeot minor = *drm_minor_get_slot(dev, type); 337*fcf17be7SFrançois Tigeot #if 0 33824edb884SFrançois Tigeot if (!minor || !device_is_registered(minor->kdev)) 339*fcf17be7SFrançois Tigeot #else 340*fcf17be7SFrançois Tigeot if (!minor) 341*fcf17be7SFrançois Tigeot #endif 34224edb884SFrançois Tigeot return; 34324edb884SFrançois Tigeot 34424edb884SFrançois Tigeot /* replace @minor with NULL so lookups will fail from now on */ 34524edb884SFrançois Tigeot spin_lock_irqsave(&drm_minor_lock, flags); 34624edb884SFrançois Tigeot idr_replace(&drm_minors_idr, NULL, minor->index); 34724edb884SFrançois Tigeot spin_unlock_irqrestore(&drm_minor_lock, flags); 34824edb884SFrançois Tigeot 349*fcf17be7SFrançois Tigeot #if 0 35024edb884SFrançois Tigeot device_del(minor->kdev); 35124edb884SFrançois Tigeot dev_set_drvdata(minor->kdev, NULL); /* safety belt */ 352*fcf17be7SFrançois Tigeot #endif 35324edb884SFrançois Tigeot drm_debugfs_cleanup(minor); 35424edb884SFrançois Tigeot } 35524edb884SFrançois Tigeot 356*fcf17be7SFrançois Tigeot #if 0 35724edb884SFrançois Tigeot /** 35824edb884SFrançois Tigeot * drm_minor_acquire - Acquire a DRM minor 35924edb884SFrançois Tigeot * @minor_id: Minor ID of the DRM-minor 36024edb884SFrançois Tigeot * 36124edb884SFrançois Tigeot * Looks up the given minor-ID and returns the respective DRM-minor object. The 36224edb884SFrançois Tigeot * refence-count of the underlying device is increased so you must release this 36324edb884SFrançois Tigeot * object with drm_minor_release(). 36424edb884SFrançois Tigeot * 36524edb884SFrançois Tigeot * As long as you hold this minor, it is guaranteed that the object and the 36624edb884SFrançois Tigeot * minor->dev pointer will stay valid! However, the device may get unplugged and 36724edb884SFrançois Tigeot * unregistered while you hold the minor. 36824edb884SFrançois Tigeot * 36924edb884SFrançois Tigeot * Returns: 37024edb884SFrançois Tigeot * Pointer to minor-object with increased device-refcount, or PTR_ERR on 37124edb884SFrançois Tigeot * failure. 37224edb884SFrançois Tigeot */ 37324edb884SFrançois Tigeot struct drm_minor *drm_minor_acquire(unsigned int minor_id) 37424edb884SFrançois Tigeot { 37524edb884SFrançois Tigeot struct drm_minor *minor; 37624edb884SFrançois Tigeot unsigned long flags; 37724edb884SFrançois Tigeot 37824edb884SFrançois Tigeot spin_lock_irqsave(&drm_minor_lock, flags); 37924edb884SFrançois Tigeot minor = idr_find(&drm_minors_idr, minor_id); 38024edb884SFrançois Tigeot if (minor) 38124edb884SFrançois Tigeot drm_dev_ref(minor->dev); 38224edb884SFrançois Tigeot spin_unlock_irqrestore(&drm_minor_lock, flags); 38324edb884SFrançois Tigeot 38424edb884SFrançois Tigeot if (!minor) { 38524edb884SFrançois Tigeot return ERR_PTR(-ENODEV); 38624edb884SFrançois Tigeot } else if (drm_device_is_unplugged(minor->dev)) { 38724edb884SFrançois Tigeot drm_dev_unref(minor->dev); 38824edb884SFrançois Tigeot return ERR_PTR(-ENODEV); 38924edb884SFrançois Tigeot } 39024edb884SFrançois Tigeot 39124edb884SFrançois Tigeot return minor; 39224edb884SFrançois Tigeot } 39324edb884SFrançois Tigeot 39424edb884SFrançois Tigeot /** 39524edb884SFrançois Tigeot * drm_minor_release - Release DRM minor 39624edb884SFrançois Tigeot * @minor: Pointer to DRM minor object 39724edb884SFrançois Tigeot * 39824edb884SFrançois Tigeot * Release a minor that was previously acquired via drm_minor_acquire(). 39924edb884SFrançois Tigeot */ 40024edb884SFrançois Tigeot void drm_minor_release(struct drm_minor *minor) 40124edb884SFrançois Tigeot { 40224edb884SFrançois Tigeot drm_dev_unref(minor->dev); 40324edb884SFrançois Tigeot } 40424edb884SFrançois Tigeot 40524edb884SFrançois Tigeot /** 406352ff8bdSFrançois Tigeot * DOC: driver instance overview 407352ff8bdSFrançois Tigeot * 408352ff8bdSFrançois Tigeot * A device instance for a drm driver is represented by struct &drm_device. This 409352ff8bdSFrançois Tigeot * is allocated with drm_dev_alloc(), usually from bus-specific ->probe() 410352ff8bdSFrançois Tigeot * callbacks implemented by the driver. The driver then needs to initialize all 411352ff8bdSFrançois Tigeot * the various subsystems for the drm device like memory management, vblank 412352ff8bdSFrançois Tigeot * handling, modesetting support and intial output configuration plus obviously 413352ff8bdSFrançois Tigeot * initialize all the corresponding hardware bits. An important part of this is 414352ff8bdSFrançois Tigeot * also calling drm_dev_set_unique() to set the userspace-visible unique name of 415352ff8bdSFrançois Tigeot * this device instance. Finally when everything is up and running and ready for 416352ff8bdSFrançois Tigeot * userspace the device instance can be published using drm_dev_register(). 417352ff8bdSFrançois Tigeot * 418352ff8bdSFrançois Tigeot * There is also deprecated support for initalizing device instances using 419352ff8bdSFrançois Tigeot * bus-specific helpers and the ->load() callback. But due to 420352ff8bdSFrançois Tigeot * backwards-compatibility needs the device instance have to be published too 421352ff8bdSFrançois Tigeot * early, which requires unpretty global locking to make safe and is therefore 422352ff8bdSFrançois Tigeot * only support for existing drivers not yet converted to the new scheme. 423352ff8bdSFrançois Tigeot * 424352ff8bdSFrançois Tigeot * When cleaning up a device instance everything needs to be done in reverse: 425352ff8bdSFrançois Tigeot * First unpublish the device instance with drm_dev_unregister(). Then clean up 426352ff8bdSFrançois Tigeot * any other resources allocated at device initialization and drop the driver's 427352ff8bdSFrançois Tigeot * reference to &drm_device using drm_dev_unref(). 428352ff8bdSFrançois Tigeot * 429352ff8bdSFrançois Tigeot * Note that the lifetime rules for &drm_device instance has still a lot of 430352ff8bdSFrançois Tigeot * historical baggage. Hence use the reference counting provided by 431352ff8bdSFrançois Tigeot * drm_dev_ref() and drm_dev_unref() only carefully. 432352ff8bdSFrançois Tigeot * 433352ff8bdSFrançois Tigeot * Also note that embedding of &drm_device is currently not (yet) supported (but 434352ff8bdSFrançois Tigeot * it would be easy to add). Drivers can store driver-private data in the 435352ff8bdSFrançois Tigeot * dev_priv field of &drm_device. 436352ff8bdSFrançois Tigeot */ 437352ff8bdSFrançois Tigeot 438352ff8bdSFrançois Tigeot /** 43924edb884SFrançois Tigeot * drm_put_dev - Unregister and release a DRM device 44024edb884SFrançois Tigeot * @dev: DRM device 44124edb884SFrançois Tigeot * 44224edb884SFrançois Tigeot * Called at module unload time or when a PCI device is unplugged. 44324edb884SFrançois Tigeot * 44424edb884SFrançois Tigeot * Cleans up all DRM device, calling drm_lastclose(). 445352ff8bdSFrançois Tigeot * 446352ff8bdSFrançois Tigeot * Note: Use of this function is deprecated. It will eventually go away 447352ff8bdSFrançois Tigeot * completely. Please use drm_dev_unregister() and drm_dev_unref() explicitly 448352ff8bdSFrançois Tigeot * instead to make sure that the device isn't userspace accessible any more 449352ff8bdSFrançois Tigeot * while teardown is in progress, ensuring that userspace can't access an 450352ff8bdSFrançois Tigeot * inconsistent state. 45124edb884SFrançois Tigeot */ 45224edb884SFrançois Tigeot void drm_put_dev(struct drm_device *dev) 45324edb884SFrançois Tigeot { 45424edb884SFrançois Tigeot DRM_DEBUG("\n"); 45524edb884SFrançois Tigeot 45624edb884SFrançois Tigeot if (!dev) { 45724edb884SFrançois Tigeot DRM_ERROR("cleanup called no dev\n"); 45824edb884SFrançois Tigeot return; 45924edb884SFrançois Tigeot } 46024edb884SFrançois Tigeot 46124edb884SFrançois Tigeot drm_dev_unregister(dev); 46224edb884SFrançois Tigeot drm_dev_unref(dev); 46324edb884SFrançois Tigeot } 46424edb884SFrançois Tigeot EXPORT_SYMBOL(drm_put_dev); 46524edb884SFrançois Tigeot 46624edb884SFrançois Tigeot void drm_unplug_dev(struct drm_device *dev) 46724edb884SFrançois Tigeot { 46824edb884SFrançois Tigeot /* for a USB device */ 46924edb884SFrançois Tigeot drm_minor_unregister(dev, DRM_MINOR_LEGACY); 47024edb884SFrançois Tigeot drm_minor_unregister(dev, DRM_MINOR_RENDER); 47124edb884SFrançois Tigeot drm_minor_unregister(dev, DRM_MINOR_CONTROL); 47224edb884SFrançois Tigeot 47324edb884SFrançois Tigeot mutex_lock(&drm_global_mutex); 47424edb884SFrançois Tigeot 47524edb884SFrançois Tigeot drm_device_set_unplugged(dev); 47624edb884SFrançois Tigeot 47724edb884SFrançois Tigeot if (dev->open_count == 0) { 47824edb884SFrançois Tigeot drm_put_dev(dev); 47924edb884SFrançois Tigeot } 48024edb884SFrançois Tigeot mutex_unlock(&drm_global_mutex); 48124edb884SFrançois Tigeot } 48224edb884SFrançois Tigeot EXPORT_SYMBOL(drm_unplug_dev); 48324edb884SFrançois Tigeot 48424edb884SFrançois Tigeot /* 48524edb884SFrançois Tigeot * DRM internal mount 48624edb884SFrançois Tigeot * We want to be able to allocate our own "struct address_space" to control 48724edb884SFrançois Tigeot * memory-mappings in VRAM (or stolen RAM, ...). However, core MM does not allow 48824edb884SFrançois Tigeot * stand-alone address_space objects, so we need an underlying inode. As there 48924edb884SFrançois Tigeot * is no way to allocate an independent inode easily, we need a fake internal 49024edb884SFrançois Tigeot * VFS mount-point. 49124edb884SFrançois Tigeot * 49224edb884SFrançois Tigeot * The drm_fs_inode_new() function allocates a new inode, drm_fs_inode_free() 49324edb884SFrançois Tigeot * frees it again. You are allowed to use iget() and iput() to get references to 49424edb884SFrançois Tigeot * the inode. But each drm_fs_inode_new() call must be paired with exactly one 49524edb884SFrançois Tigeot * drm_fs_inode_free() call (which does not have to be the last iput()). 49624edb884SFrançois Tigeot * We use drm_fs_inode_*() to manage our internal VFS mount-point and share it 49724edb884SFrançois Tigeot * between multiple inode-users. You could, technically, call 49824edb884SFrançois Tigeot * iget() + drm_fs_inode_free() directly after alloc and sometime later do an 49924edb884SFrançois Tigeot * iput(), but this way you'd end up with a new vfsmount for each inode. 50024edb884SFrançois Tigeot */ 50124edb884SFrançois Tigeot 50224edb884SFrançois Tigeot static int drm_fs_cnt; 50324edb884SFrançois Tigeot static struct vfsmount *drm_fs_mnt; 50424edb884SFrançois Tigeot 50524edb884SFrançois Tigeot static const struct dentry_operations drm_fs_dops = { 50624edb884SFrançois Tigeot .d_dname = simple_dname, 50724edb884SFrançois Tigeot }; 50824edb884SFrançois Tigeot 50924edb884SFrançois Tigeot static const struct super_operations drm_fs_sops = { 51024edb884SFrançois Tigeot .statfs = simple_statfs, 51124edb884SFrançois Tigeot }; 51224edb884SFrançois Tigeot 51324edb884SFrançois Tigeot static struct dentry *drm_fs_mount(struct file_system_type *fs_type, int flags, 51424edb884SFrançois Tigeot const char *dev_name, void *data) 51524edb884SFrançois Tigeot { 51624edb884SFrançois Tigeot return mount_pseudo(fs_type, 51724edb884SFrançois Tigeot "drm:", 51824edb884SFrançois Tigeot &drm_fs_sops, 51924edb884SFrançois Tigeot &drm_fs_dops, 52024edb884SFrançois Tigeot 0x010203ff); 52124edb884SFrançois Tigeot } 52224edb884SFrançois Tigeot 52324edb884SFrançois Tigeot static struct file_system_type drm_fs_type = { 52424edb884SFrançois Tigeot .name = "drm", 52524edb884SFrançois Tigeot .owner = THIS_MODULE, 52624edb884SFrançois Tigeot .mount = drm_fs_mount, 52724edb884SFrançois Tigeot .kill_sb = kill_anon_super, 52824edb884SFrançois Tigeot }; 52924edb884SFrançois Tigeot 53024edb884SFrançois Tigeot static struct inode *drm_fs_inode_new(void) 53124edb884SFrançois Tigeot { 53224edb884SFrançois Tigeot struct inode *inode; 53324edb884SFrançois Tigeot int r; 53424edb884SFrançois Tigeot 53524edb884SFrançois Tigeot r = simple_pin_fs(&drm_fs_type, &drm_fs_mnt, &drm_fs_cnt); 53624edb884SFrançois Tigeot if (r < 0) { 53724edb884SFrançois Tigeot DRM_ERROR("Cannot mount pseudo fs: %d\n", r); 53824edb884SFrançois Tigeot return ERR_PTR(r); 53924edb884SFrançois Tigeot } 54024edb884SFrançois Tigeot 54124edb884SFrançois Tigeot inode = alloc_anon_inode(drm_fs_mnt->mnt_sb); 54224edb884SFrançois Tigeot if (IS_ERR(inode)) 54324edb884SFrançois Tigeot simple_release_fs(&drm_fs_mnt, &drm_fs_cnt); 54424edb884SFrançois Tigeot 54524edb884SFrançois Tigeot return inode; 54624edb884SFrançois Tigeot } 54724edb884SFrançois Tigeot 54824edb884SFrançois Tigeot static void drm_fs_inode_free(struct inode *inode) 54924edb884SFrançois Tigeot { 55024edb884SFrançois Tigeot if (inode) { 55124edb884SFrançois Tigeot iput(inode); 55224edb884SFrançois Tigeot simple_release_fs(&drm_fs_mnt, &drm_fs_cnt); 55324edb884SFrançois Tigeot } 55424edb884SFrançois Tigeot } 555*fcf17be7SFrançois Tigeot #endif 55624edb884SFrançois Tigeot 55724edb884SFrançois Tigeot /** 55824edb884SFrançois Tigeot * drm_dev_alloc - Allocate new DRM device 55924edb884SFrançois Tigeot * @driver: DRM driver to allocate device for 56024edb884SFrançois Tigeot * @parent: Parent device object 56124edb884SFrançois Tigeot * 56224edb884SFrançois Tigeot * Allocate and initialize a new DRM device. No device registration is done. 56324edb884SFrançois Tigeot * Call drm_dev_register() to advertice the device to user space and register it 564352ff8bdSFrançois Tigeot * with other core subsystems. This should be done last in the device 565352ff8bdSFrançois Tigeot * initialization sequence to make sure userspace can't access an inconsistent 566352ff8bdSFrançois Tigeot * state. 56724edb884SFrançois Tigeot * 56824edb884SFrançois Tigeot * The initial ref-count of the object is 1. Use drm_dev_ref() and 56924edb884SFrançois Tigeot * drm_dev_unref() to take and drop further ref-counts. 57024edb884SFrançois Tigeot * 5712c9916cdSFrançois Tigeot * Note that for purely virtual devices @parent can be NULL. 5722c9916cdSFrançois Tigeot * 57324edb884SFrançois Tigeot * RETURNS: 57424edb884SFrançois Tigeot * Pointer to new DRM device, or NULL if out of memory. 57524edb884SFrançois Tigeot */ 57624edb884SFrançois Tigeot struct drm_device *drm_dev_alloc(struct drm_driver *driver, 57724edb884SFrançois Tigeot struct device *parent) 57824edb884SFrançois Tigeot { 57924edb884SFrançois Tigeot struct drm_device *dev; 58024edb884SFrançois Tigeot int ret; 58124edb884SFrançois Tigeot 58224edb884SFrançois Tigeot dev = kzalloc(sizeof(*dev), GFP_KERNEL); 58324edb884SFrançois Tigeot if (!dev) 58424edb884SFrançois Tigeot return NULL; 58524edb884SFrançois Tigeot 58624edb884SFrançois Tigeot kref_init(&dev->ref); 58724edb884SFrançois Tigeot dev->dev = parent; 58824edb884SFrançois Tigeot dev->driver = driver; 58924edb884SFrançois Tigeot 59024edb884SFrançois Tigeot INIT_LIST_HEAD(&dev->filelist); 59124edb884SFrançois Tigeot INIT_LIST_HEAD(&dev->ctxlist); 59224edb884SFrançois Tigeot INIT_LIST_HEAD(&dev->vmalist); 59324edb884SFrançois Tigeot INIT_LIST_HEAD(&dev->maplist); 59424edb884SFrançois Tigeot INIT_LIST_HEAD(&dev->vblank_event_list); 59524edb884SFrançois Tigeot 596*fcf17be7SFrançois Tigeot spin_init(&dev->buf_lock, "drmdbl"); 597*fcf17be7SFrançois Tigeot lockinit(&dev->event_lock, "drmev", 0, LK_CANRECURSE); 598*fcf17be7SFrançois Tigeot lockinit(&dev->struct_mutex, "drmslk", 0, LK_CANRECURSE); 599*fcf17be7SFrançois Tigeot lockinit(&dev->filelist_mutex, "drmflm", 0, LK_CANRECURSE); 600*fcf17be7SFrançois Tigeot lockinit(&dev->ctxlist_mutex, "drmclm", 0, LK_CANRECURSE); 601*fcf17be7SFrançois Tigeot lockinit(&dev->master_mutex, "drmmm", 0, LK_CANRECURSE); 60224edb884SFrançois Tigeot 603*fcf17be7SFrançois Tigeot #ifndef __DragonFly__ 60424edb884SFrançois Tigeot dev->anon_inode = drm_fs_inode_new(); 60524edb884SFrançois Tigeot if (IS_ERR(dev->anon_inode)) { 60624edb884SFrançois Tigeot ret = PTR_ERR(dev->anon_inode); 60724edb884SFrançois Tigeot DRM_ERROR("Cannot allocate anonymous inode: %d\n", ret); 60824edb884SFrançois Tigeot goto err_free; 60924edb884SFrançois Tigeot } 610*fcf17be7SFrançois Tigeot #else 611*fcf17be7SFrançois Tigeot dev->anon_inode = NULL; 612*fcf17be7SFrançois Tigeot #endif 61324edb884SFrançois Tigeot 61424edb884SFrançois Tigeot if (drm_core_check_feature(dev, DRIVER_MODESET)) { 61524edb884SFrançois Tigeot ret = drm_minor_alloc(dev, DRM_MINOR_CONTROL); 61624edb884SFrançois Tigeot if (ret) 61724edb884SFrançois Tigeot goto err_minors; 618352ff8bdSFrançois Tigeot 619352ff8bdSFrançois Tigeot WARN_ON(driver->suspend || driver->resume); 62024edb884SFrançois Tigeot } 62124edb884SFrançois Tigeot 62224edb884SFrançois Tigeot if (drm_core_check_feature(dev, DRIVER_RENDER)) { 62324edb884SFrançois Tigeot ret = drm_minor_alloc(dev, DRM_MINOR_RENDER); 62424edb884SFrançois Tigeot if (ret) 62524edb884SFrançois Tigeot goto err_minors; 62624edb884SFrançois Tigeot } 62724edb884SFrançois Tigeot 62824edb884SFrançois Tigeot ret = drm_minor_alloc(dev, DRM_MINOR_LEGACY); 62924edb884SFrançois Tigeot if (ret) 63024edb884SFrançois Tigeot goto err_minors; 63124edb884SFrançois Tigeot 63224edb884SFrançois Tigeot if (drm_ht_create(&dev->map_hash, 12)) 63324edb884SFrançois Tigeot goto err_minors; 63424edb884SFrançois Tigeot 635a05eeebfSFrançois Tigeot drm_legacy_ctxbitmap_init(dev); 63624edb884SFrançois Tigeot 6371b13d190SFrançois Tigeot if (drm_core_check_feature(dev, DRIVER_GEM)) { 63824edb884SFrançois Tigeot ret = drm_gem_init(dev); 63924edb884SFrançois Tigeot if (ret) { 64024edb884SFrançois Tigeot DRM_ERROR("Cannot initialize graphics execution manager (GEM)\n"); 64124edb884SFrançois Tigeot goto err_ctxbitmap; 64224edb884SFrançois Tigeot } 64324edb884SFrançois Tigeot } 64424edb884SFrançois Tigeot 645*fcf17be7SFrançois Tigeot #if 0 646aee94f86SFrançois Tigeot if (parent) { 647aee94f86SFrançois Tigeot ret = drm_dev_set_unique(dev, dev_name(parent)); 648aee94f86SFrançois Tigeot if (ret) 649aee94f86SFrançois Tigeot goto err_setunique; 650aee94f86SFrançois Tigeot } 651*fcf17be7SFrançois Tigeot #endif 652aee94f86SFrançois Tigeot 65324edb884SFrançois Tigeot return dev; 65424edb884SFrançois Tigeot 655*fcf17be7SFrançois Tigeot #if 0 656aee94f86SFrançois Tigeot err_setunique: 657aee94f86SFrançois Tigeot if (drm_core_check_feature(dev, DRIVER_GEM)) 658aee94f86SFrançois Tigeot drm_gem_destroy(dev); 659*fcf17be7SFrançois Tigeot #endif 66024edb884SFrançois Tigeot err_ctxbitmap: 66124edb884SFrançois Tigeot drm_legacy_ctxbitmap_cleanup(dev); 66224edb884SFrançois Tigeot drm_ht_remove(&dev->map_hash); 66324edb884SFrançois Tigeot err_minors: 66424edb884SFrançois Tigeot drm_minor_free(dev, DRM_MINOR_LEGACY); 66524edb884SFrançois Tigeot drm_minor_free(dev, DRM_MINOR_RENDER); 66624edb884SFrançois Tigeot drm_minor_free(dev, DRM_MINOR_CONTROL); 667*fcf17be7SFrançois Tigeot #ifndef __DragonFly__ 66824edb884SFrançois Tigeot drm_fs_inode_free(dev->anon_inode); 66924edb884SFrançois Tigeot err_free: 670*fcf17be7SFrançois Tigeot #endif 67124edb884SFrançois Tigeot mutex_destroy(&dev->master_mutex); 67224edb884SFrançois Tigeot kfree(dev); 67324edb884SFrançois Tigeot return NULL; 67424edb884SFrançois Tigeot } 67524edb884SFrançois Tigeot EXPORT_SYMBOL(drm_dev_alloc); 67624edb884SFrançois Tigeot 677*fcf17be7SFrançois Tigeot #if 0 67824edb884SFrançois Tigeot static void drm_dev_release(struct kref *ref) 67924edb884SFrançois Tigeot { 68024edb884SFrançois Tigeot struct drm_device *dev = container_of(ref, struct drm_device, ref); 68124edb884SFrançois Tigeot 6821b13d190SFrançois Tigeot if (drm_core_check_feature(dev, DRIVER_GEM)) 68324edb884SFrançois Tigeot drm_gem_destroy(dev); 68424edb884SFrançois Tigeot 68524edb884SFrançois Tigeot drm_legacy_ctxbitmap_cleanup(dev); 68624edb884SFrançois Tigeot drm_ht_remove(&dev->map_hash); 68724edb884SFrançois Tigeot drm_fs_inode_free(dev->anon_inode); 68824edb884SFrançois Tigeot 68924edb884SFrançois Tigeot drm_minor_free(dev, DRM_MINOR_LEGACY); 69024edb884SFrançois Tigeot drm_minor_free(dev, DRM_MINOR_RENDER); 69124edb884SFrançois Tigeot drm_minor_free(dev, DRM_MINOR_CONTROL); 69224edb884SFrançois Tigeot 69324edb884SFrançois Tigeot mutex_destroy(&dev->master_mutex); 69424edb884SFrançois Tigeot kfree(dev->unique); 69524edb884SFrançois Tigeot kfree(dev); 69624edb884SFrançois Tigeot } 69724edb884SFrançois Tigeot 69824edb884SFrançois Tigeot /** 69924edb884SFrançois Tigeot * drm_dev_ref - Take reference of a DRM device 70024edb884SFrançois Tigeot * @dev: device to take reference of or NULL 70124edb884SFrançois Tigeot * 70224edb884SFrançois Tigeot * This increases the ref-count of @dev by one. You *must* already own a 70324edb884SFrançois Tigeot * reference when calling this. Use drm_dev_unref() to drop this reference 70424edb884SFrançois Tigeot * again. 70524edb884SFrançois Tigeot * 70624edb884SFrançois Tigeot * This function never fails. However, this function does not provide *any* 70724edb884SFrançois Tigeot * guarantee whether the device is alive or running. It only provides a 70824edb884SFrançois Tigeot * reference to the object and the memory associated with it. 70924edb884SFrançois Tigeot */ 71024edb884SFrançois Tigeot void drm_dev_ref(struct drm_device *dev) 71124edb884SFrançois Tigeot { 71224edb884SFrançois Tigeot if (dev) 71324edb884SFrançois Tigeot kref_get(&dev->ref); 71424edb884SFrançois Tigeot } 71524edb884SFrançois Tigeot EXPORT_SYMBOL(drm_dev_ref); 71624edb884SFrançois Tigeot 71724edb884SFrançois Tigeot /** 71824edb884SFrançois Tigeot * drm_dev_unref - Drop reference of a DRM device 71924edb884SFrançois Tigeot * @dev: device to drop reference of or NULL 72024edb884SFrançois Tigeot * 72124edb884SFrançois Tigeot * This decreases the ref-count of @dev by one. The device is destroyed if the 72224edb884SFrançois Tigeot * ref-count drops to zero. 72324edb884SFrançois Tigeot */ 72424edb884SFrançois Tigeot void drm_dev_unref(struct drm_device *dev) 72524edb884SFrançois Tigeot { 72624edb884SFrançois Tigeot if (dev) 72724edb884SFrançois Tigeot kref_put(&dev->ref, drm_dev_release); 72824edb884SFrançois Tigeot } 72924edb884SFrançois Tigeot EXPORT_SYMBOL(drm_dev_unref); 730*fcf17be7SFrançois Tigeot #endif 73124edb884SFrançois Tigeot 73224edb884SFrançois Tigeot /** 73324edb884SFrançois Tigeot * drm_dev_register - Register DRM device 73424edb884SFrançois Tigeot * @dev: Device to register 73524edb884SFrançois Tigeot * @flags: Flags passed to the driver's .load() function 73624edb884SFrançois Tigeot * 73724edb884SFrançois Tigeot * Register the DRM device @dev with the system, advertise device to user-space 73824edb884SFrançois Tigeot * and start normal device operation. @dev must be allocated via drm_dev_alloc() 7398621f407SFrançois Tigeot * previously. Right after drm_dev_register() the driver should call 7408621f407SFrançois Tigeot * drm_connector_register_all() to register all connectors in sysfs. This is 7418621f407SFrançois Tigeot * a separate call for backward compatibility with drivers still using 7428621f407SFrançois Tigeot * the deprecated ->load() callback, where connectors are registered from within 7438621f407SFrançois Tigeot * the ->load() callback. 74424edb884SFrançois Tigeot * 74524edb884SFrançois Tigeot * Never call this twice on any device! 74624edb884SFrançois Tigeot * 747352ff8bdSFrançois Tigeot * NOTE: To ensure backward compatibility with existing drivers method this 748352ff8bdSFrançois Tigeot * function calls the ->load() method after registering the device nodes, 749352ff8bdSFrançois Tigeot * creating race conditions. Usage of the ->load() methods is therefore 750352ff8bdSFrançois Tigeot * deprecated, drivers must perform all initialization before calling 751352ff8bdSFrançois Tigeot * drm_dev_register(). 752352ff8bdSFrançois Tigeot * 75324edb884SFrançois Tigeot * RETURNS: 75424edb884SFrançois Tigeot * 0 on success, negative error code on failure. 75524edb884SFrançois Tigeot */ 75624edb884SFrançois Tigeot int drm_dev_register(struct drm_device *dev, unsigned long flags) 75724edb884SFrançois Tigeot { 75824edb884SFrançois Tigeot int ret; 75924edb884SFrançois Tigeot 76024edb884SFrançois Tigeot mutex_lock(&drm_global_mutex); 76124edb884SFrançois Tigeot 76224edb884SFrançois Tigeot ret = drm_minor_register(dev, DRM_MINOR_CONTROL); 76324edb884SFrançois Tigeot if (ret) 76424edb884SFrançois Tigeot goto err_minors; 76524edb884SFrançois Tigeot 76624edb884SFrançois Tigeot ret = drm_minor_register(dev, DRM_MINOR_RENDER); 76724edb884SFrançois Tigeot if (ret) 76824edb884SFrançois Tigeot goto err_minors; 76924edb884SFrançois Tigeot 77024edb884SFrançois Tigeot ret = drm_minor_register(dev, DRM_MINOR_LEGACY); 77124edb884SFrançois Tigeot if (ret) 77224edb884SFrançois Tigeot goto err_minors; 77324edb884SFrançois Tigeot 77424edb884SFrançois Tigeot if (dev->driver->load) { 77524edb884SFrançois Tigeot ret = dev->driver->load(dev, flags); 77624edb884SFrançois Tigeot if (ret) 77724edb884SFrançois Tigeot goto err_minors; 77824edb884SFrançois Tigeot } 77924edb884SFrançois Tigeot 78024edb884SFrançois Tigeot ret = 0; 78124edb884SFrançois Tigeot goto out_unlock; 78224edb884SFrançois Tigeot 78324edb884SFrançois Tigeot err_minors: 78424edb884SFrançois Tigeot drm_minor_unregister(dev, DRM_MINOR_LEGACY); 78524edb884SFrançois Tigeot drm_minor_unregister(dev, DRM_MINOR_RENDER); 78624edb884SFrançois Tigeot drm_minor_unregister(dev, DRM_MINOR_CONTROL); 78724edb884SFrançois Tigeot out_unlock: 78824edb884SFrançois Tigeot mutex_unlock(&drm_global_mutex); 78924edb884SFrançois Tigeot return ret; 79024edb884SFrançois Tigeot } 79124edb884SFrançois Tigeot EXPORT_SYMBOL(drm_dev_register); 79224edb884SFrançois Tigeot 793*fcf17be7SFrançois Tigeot #if 0 79424edb884SFrançois Tigeot /** 79524edb884SFrançois Tigeot * drm_dev_unregister - Unregister DRM device 79624edb884SFrançois Tigeot * @dev: Device to unregister 79724edb884SFrançois Tigeot * 79824edb884SFrançois Tigeot * Unregister the DRM device from the system. This does the reverse of 79924edb884SFrançois Tigeot * drm_dev_register() but does not deallocate the device. The caller must call 80024edb884SFrançois Tigeot * drm_dev_unref() to drop their final reference. 801352ff8bdSFrançois Tigeot * 802352ff8bdSFrançois Tigeot * This should be called first in the device teardown code to make sure 803352ff8bdSFrançois Tigeot * userspace can't access the device instance any more. 80424edb884SFrançois Tigeot */ 80524edb884SFrançois Tigeot void drm_dev_unregister(struct drm_device *dev) 80624edb884SFrançois Tigeot { 80724edb884SFrançois Tigeot struct drm_map_list *r_list, *list_temp; 80824edb884SFrançois Tigeot 80924edb884SFrançois Tigeot drm_lastclose(dev); 81024edb884SFrançois Tigeot 81124edb884SFrançois Tigeot if (dev->driver->unload) 81224edb884SFrançois Tigeot dev->driver->unload(dev); 81324edb884SFrançois Tigeot 81424edb884SFrançois Tigeot if (dev->agp) 81524edb884SFrançois Tigeot drm_pci_agp_destroy(dev); 81624edb884SFrançois Tigeot 81724edb884SFrançois Tigeot drm_vblank_cleanup(dev); 81824edb884SFrançois Tigeot 81924edb884SFrançois Tigeot list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) 8201b13d190SFrançois Tigeot drm_legacy_rmmap(dev, r_list->map); 82124edb884SFrançois Tigeot 82224edb884SFrançois Tigeot drm_minor_unregister(dev, DRM_MINOR_LEGACY); 82324edb884SFrançois Tigeot drm_minor_unregister(dev, DRM_MINOR_RENDER); 82424edb884SFrançois Tigeot drm_minor_unregister(dev, DRM_MINOR_CONTROL); 82524edb884SFrançois Tigeot } 82624edb884SFrançois Tigeot EXPORT_SYMBOL(drm_dev_unregister); 82724edb884SFrançois Tigeot 82824edb884SFrançois Tigeot /** 82924edb884SFrançois Tigeot * drm_dev_set_unique - Set the unique name of a DRM device 83024edb884SFrançois Tigeot * @dev: device of which to set the unique name 831aee94f86SFrançois Tigeot * @name: unique name 83224edb884SFrançois Tigeot * 833aee94f86SFrançois Tigeot * Sets the unique name of a DRM device using the specified string. Drivers 834aee94f86SFrançois Tigeot * can use this at driver probe time if the unique name of the devices they 835aee94f86SFrançois Tigeot * drive is static. 83624edb884SFrançois Tigeot * 83724edb884SFrançois Tigeot * Return: 0 on success or a negative error code on failure. 83824edb884SFrançois Tigeot */ 839aee94f86SFrançois Tigeot int drm_dev_set_unique(struct drm_device *dev, const char *name) 84024edb884SFrançois Tigeot { 84124edb884SFrançois Tigeot kfree(dev->unique); 842aee94f86SFrançois Tigeot dev->unique = kstrdup(name, GFP_KERNEL); 84324edb884SFrançois Tigeot 84424edb884SFrançois Tigeot return dev->unique ? 0 : -ENOMEM; 84524edb884SFrançois Tigeot } 84624edb884SFrançois Tigeot EXPORT_SYMBOL(drm_dev_set_unique); 84724edb884SFrançois Tigeot #endif 84824edb884SFrançois Tigeot 84924edb884SFrançois Tigeot /* 85024edb884SFrançois Tigeot * DRM Core 85124edb884SFrançois Tigeot * The DRM core module initializes all global DRM objects and makes them 85224edb884SFrançois Tigeot * available to drivers. Once setup, drivers can probe their respective 85324edb884SFrançois Tigeot * devices. 85424edb884SFrançois Tigeot * Currently, core management includes: 85524edb884SFrançois Tigeot * - The "DRM-Global" key/value database 85624edb884SFrançois Tigeot * - Global ID management for connectors 85724edb884SFrançois Tigeot * - DRM major number allocation 85824edb884SFrançois Tigeot * - DRM minor management 85924edb884SFrançois Tigeot * - DRM sysfs class 86024edb884SFrançois Tigeot * - DRM debugfs root 86124edb884SFrançois Tigeot * 86224edb884SFrançois Tigeot * Furthermore, the DRM core provides dynamic char-dev lookups. For each 86324edb884SFrançois Tigeot * interface registered on a DRM device, you can request minor numbers from DRM 86424edb884SFrançois Tigeot * core. DRM core takes care of major-number management and char-dev 86524edb884SFrançois Tigeot * registration. A stub ->open() callback forwards any open() requests to the 86624edb884SFrançois Tigeot * registered minor. 86724edb884SFrançois Tigeot */ 86824edb884SFrançois Tigeot 86924edb884SFrançois Tigeot #if 0 87024edb884SFrançois Tigeot static int drm_stub_open(struct inode *inode, struct file *filp) 87124edb884SFrançois Tigeot { 87224edb884SFrançois Tigeot const struct file_operations *new_fops; 87324edb884SFrançois Tigeot struct drm_minor *minor; 87424edb884SFrançois Tigeot int err; 87524edb884SFrançois Tigeot 87624edb884SFrançois Tigeot DRM_DEBUG("\n"); 87724edb884SFrançois Tigeot 87824edb884SFrançois Tigeot mutex_lock(&drm_global_mutex); 87924edb884SFrançois Tigeot minor = drm_minor_acquire(iminor(inode)); 88024edb884SFrançois Tigeot if (IS_ERR(minor)) { 88124edb884SFrançois Tigeot err = PTR_ERR(minor); 88224edb884SFrançois Tigeot goto out_unlock; 88324edb884SFrançois Tigeot } 88424edb884SFrançois Tigeot 88524edb884SFrançois Tigeot new_fops = fops_get(minor->dev->driver->fops); 88624edb884SFrançois Tigeot if (!new_fops) { 88724edb884SFrançois Tigeot err = -ENODEV; 88824edb884SFrançois Tigeot goto out_release; 88924edb884SFrançois Tigeot } 89024edb884SFrançois Tigeot 89124edb884SFrançois Tigeot replace_fops(filp, new_fops); 89224edb884SFrançois Tigeot if (filp->f_op->open) 89324edb884SFrançois Tigeot err = filp->f_op->open(inode, filp); 89424edb884SFrançois Tigeot else 89524edb884SFrançois Tigeot err = 0; 89624edb884SFrançois Tigeot 89724edb884SFrançois Tigeot out_release: 89824edb884SFrançois Tigeot drm_minor_release(minor); 89924edb884SFrançois Tigeot out_unlock: 90024edb884SFrançois Tigeot mutex_unlock(&drm_global_mutex); 90124edb884SFrançois Tigeot return err; 90224edb884SFrançois Tigeot } 90324edb884SFrançois Tigeot 90424edb884SFrançois Tigeot static const struct file_operations drm_stub_fops = { 90524edb884SFrançois Tigeot .owner = THIS_MODULE, 90624edb884SFrançois Tigeot .open = drm_stub_open, 90724edb884SFrançois Tigeot .llseek = noop_llseek, 90824edb884SFrançois Tigeot }; 90924edb884SFrançois Tigeot 91024edb884SFrançois Tigeot static int __init drm_core_init(void) 91124edb884SFrançois Tigeot { 91224edb884SFrançois Tigeot int ret = -ENOMEM; 91324edb884SFrançois Tigeot 91424edb884SFrançois Tigeot drm_global_init(); 91524edb884SFrançois Tigeot drm_connector_ida_init(); 91624edb884SFrançois Tigeot idr_init(&drm_minors_idr); 91724edb884SFrançois Tigeot 91824edb884SFrançois Tigeot if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops)) 91924edb884SFrançois Tigeot goto err_p1; 92024edb884SFrançois Tigeot 921352ff8bdSFrançois Tigeot ret = drm_sysfs_init(); 922352ff8bdSFrançois Tigeot if (ret < 0) { 92324edb884SFrançois Tigeot printk(KERN_ERR "DRM: Error creating drm class.\n"); 92424edb884SFrançois Tigeot goto err_p2; 92524edb884SFrançois Tigeot } 92624edb884SFrançois Tigeot 92724edb884SFrançois Tigeot drm_debugfs_root = debugfs_create_dir("dri", NULL); 92824edb884SFrançois Tigeot if (!drm_debugfs_root) { 92924edb884SFrançois Tigeot DRM_ERROR("Cannot create /sys/kernel/debug/dri\n"); 93024edb884SFrançois Tigeot ret = -1; 93124edb884SFrançois Tigeot goto err_p3; 93224edb884SFrançois Tigeot } 93324edb884SFrançois Tigeot 93424edb884SFrançois Tigeot DRM_INFO("Initialized %s %d.%d.%d %s\n", 93524edb884SFrançois Tigeot CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); 93624edb884SFrançois Tigeot return 0; 93724edb884SFrançois Tigeot err_p3: 93824edb884SFrançois Tigeot drm_sysfs_destroy(); 93924edb884SFrançois Tigeot err_p2: 94024edb884SFrançois Tigeot unregister_chrdev(DRM_MAJOR, "drm"); 94124edb884SFrançois Tigeot 94224edb884SFrançois Tigeot idr_destroy(&drm_minors_idr); 94324edb884SFrançois Tigeot err_p1: 94424edb884SFrançois Tigeot return ret; 94524edb884SFrançois Tigeot } 94624edb884SFrançois Tigeot 94724edb884SFrançois Tigeot static void __exit drm_core_exit(void) 94824edb884SFrançois Tigeot { 94924edb884SFrançois Tigeot debugfs_remove(drm_debugfs_root); 95024edb884SFrançois Tigeot drm_sysfs_destroy(); 95124edb884SFrançois Tigeot 95224edb884SFrançois Tigeot unregister_chrdev(DRM_MAJOR, "drm"); 95324edb884SFrançois Tigeot 95424edb884SFrançois Tigeot drm_connector_ida_destroy(); 95524edb884SFrançois Tigeot idr_destroy(&drm_minors_idr); 95624edb884SFrançois Tigeot } 95724edb884SFrançois Tigeot 95824edb884SFrançois Tigeot module_init(drm_core_init); 95924edb884SFrançois Tigeot module_exit(drm_core_exit); 96024edb884SFrançois Tigeot #endif 96124edb884SFrançois Tigeot 96279f713b0SFrançois Tigeot #include <sys/devfs.h> 9635718399fSFrançois Tigeot 9649edbd4a0SFrançois Tigeot #include <linux/export.h> 965be348e9fSFrançois Tigeot #include <linux/dmi.h> 96618e26a6dSFrançois Tigeot #include <drm/drmP.h> 96718e26a6dSFrançois Tigeot #include <drm/drm_core.h> 9687f3c3d6fSHasso Tepper 969b3705d71SHasso Tepper static int drm_load(struct drm_device *dev); 9703260c067SFrançois Tigeot drm_pci_id_list_t *drm_find_description(int vendor, int device, 9717f3c3d6fSHasso Tepper drm_pci_id_list_t *idlist); 9727f3c3d6fSHasso Tepper 9737f3c3d6fSHasso Tepper #define DRIVER_SOFTC(unit) \ 974b3705d71SHasso Tepper ((struct drm_device *)devclass_get_softc(drm_devclass, unit)) 9757f3c3d6fSHasso Tepper 9765718399fSFrançois Tigeot static int 9775718399fSFrançois Tigeot drm_modevent(module_t mod, int type, void *data) 9785718399fSFrançois Tigeot { 9795718399fSFrançois Tigeot 9805718399fSFrançois Tigeot switch (type) { 9815718399fSFrançois Tigeot case MOD_LOAD: 9821d5dd71dSFrançois Tigeot TUNABLE_INT_FETCH("drm.debug", &drm_debug); 9835718399fSFrançois Tigeot break; 9845718399fSFrançois Tigeot } 9855718399fSFrançois Tigeot return (0); 9865718399fSFrançois Tigeot } 9875718399fSFrançois Tigeot 9885718399fSFrançois Tigeot static moduledata_t drm_mod = { 9895718399fSFrançois Tigeot "drm", 9905718399fSFrançois Tigeot drm_modevent, 9915718399fSFrançois Tigeot 0 9925718399fSFrançois Tigeot }; 9935718399fSFrançois Tigeot DECLARE_MODULE(drm, drm_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 9947f3c3d6fSHasso Tepper MODULE_VERSION(drm, 1); 9957f3c3d6fSHasso Tepper MODULE_DEPEND(drm, agp, 1, 1, 1); 9967f3c3d6fSHasso Tepper MODULE_DEPEND(drm, pci, 1, 1, 1); 9975718399fSFrançois Tigeot MODULE_DEPEND(drm, iicbus, 1, 1, 1); 9987f3c3d6fSHasso Tepper 99979f713b0SFrançois Tigeot static struct dev_ops drm_cdevsw = { 1000d268c872SFrançois Tigeot { "drm", 0, D_TRACKCLOSE | D_MPSAFE }, 10017f3c3d6fSHasso Tepper .d_open = drm_open, 10022c845b81SSimon Schubert .d_close = drm_close, 10037f3c3d6fSHasso Tepper .d_read = drm_read, 10047f3c3d6fSHasso Tepper .d_ioctl = drm_ioctl, 10053694ee49SSamuel J. Greear .d_kqfilter = drm_kqfilter, 10065718399fSFrançois Tigeot .d_mmap = drm_mmap, 10075718399fSFrançois Tigeot .d_mmap_single = drm_mmap_single, 10087f3c3d6fSHasso Tepper }; 10097f3c3d6fSHasso Tepper 10105718399fSFrançois Tigeot SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device"); 101127a0f882SMatthew Dillon SYSCTL_INT(_hw_drm, OID_AUTO, debug, CTLFLAG_RW, &drm_debug, 0, 101227a0f882SMatthew Dillon "DRM debugging"); 1013b3705d71SHasso Tepper 1014b3705d71SHasso Tepper int drm_probe(device_t kdev, drm_pci_id_list_t *idlist) 10157f3c3d6fSHasso Tepper { 10167f3c3d6fSHasso Tepper drm_pci_id_list_t *id_entry; 10177f3c3d6fSHasso Tepper int vendor, device; 10187f3c3d6fSHasso Tepper 101931935f45SSepherosa Ziehau vendor = pci_get_vendor(kdev); 102031935f45SSepherosa Ziehau device = pci_get_device(kdev); 1021b3705d71SHasso Tepper 10225718399fSFrançois Tigeot if (pci_get_class(kdev) != PCIC_DISPLAY) 1023b3705d71SHasso Tepper return ENXIO; 10247f3c3d6fSHasso Tepper 10257f3c3d6fSHasso Tepper id_entry = drm_find_description(vendor, device, idlist); 10267f3c3d6fSHasso Tepper if (id_entry != NULL) { 1027b3705d71SHasso Tepper if (!device_get_desc(kdev)) { 1028b3705d71SHasso Tepper device_set_desc(kdev, id_entry->name); 1029240f0ad6Szrj DRM_DEBUG("desc : %s\n", device_get_desc(kdev)); 1030b3705d71SHasso Tepper } 10317f3c3d6fSHasso Tepper return 0; 10327f3c3d6fSHasso Tepper } 10337f3c3d6fSHasso Tepper 10347f3c3d6fSHasso Tepper return ENXIO; 10357f3c3d6fSHasso Tepper } 10367f3c3d6fSHasso Tepper 1037b3705d71SHasso Tepper int drm_attach(device_t kdev, drm_pci_id_list_t *idlist) 10387f3c3d6fSHasso Tepper { 1039b3705d71SHasso Tepper struct drm_device *dev; 10407f3c3d6fSHasso Tepper drm_pci_id_list_t *id_entry; 10414705af8fSMarkus Pfeiffer int unit, error; 10427f3c3d6fSHasso Tepper 1043b3705d71SHasso Tepper unit = device_get_unit(kdev); 1044b3705d71SHasso Tepper dev = device_get_softc(kdev); 10457f3c3d6fSHasso Tepper 1046fb572d17SFrançois Tigeot /* Initialize Linux struct device */ 1047fb572d17SFrançois Tigeot dev->dev = kzalloc(sizeof(struct device), GFP_KERNEL); 1048b3705d71SHasso Tepper 1049fb572d17SFrançois Tigeot if (!strcmp(device_get_name(kdev), "drmsub")) 1050fb572d17SFrançois Tigeot dev->dev->bsddev = device_get_parent(kdev); 1051fb572d17SFrançois Tigeot else 1052fb572d17SFrançois Tigeot dev->dev->bsddev = kdev; 1053fb572d17SFrançois Tigeot 1054fb572d17SFrançois Tigeot dev->pci_domain = pci_get_domain(dev->dev->bsddev); 1055fb572d17SFrançois Tigeot dev->pci_bus = pci_get_bus(dev->dev->bsddev); 1056fb572d17SFrançois Tigeot dev->pci_slot = pci_get_slot(dev->dev->bsddev); 1057fb572d17SFrançois Tigeot dev->pci_func = pci_get_function(dev->dev->bsddev); 1058fb572d17SFrançois Tigeot drm_init_pdev(dev->dev->bsddev, &dev->pdev); 1059b3705d71SHasso Tepper 1060ccebb33fSFrançois Tigeot id_entry = drm_find_description(dev->pdev->vendor, 1061ccebb33fSFrançois Tigeot dev->pdev->device, idlist); 10626f486c69SFrançois Tigeot dev->id_entry = id_entry; 1063b3705d71SHasso Tepper 1064fc53575bSzrj /* Print the contents of pdev struct. */ 1065fc53575bSzrj drm_print_pdev(dev->pdev); 1066fc53575bSzrj 10675718399fSFrançois Tigeot lockinit(&dev->dev_lock, "drmdev", 0, LK_CANRECURSE); 1068b3705d71SHasso Tepper lwkt_serialize_init(&dev->irq_lock); 10695718399fSFrançois Tigeot lockinit(&dev->event_lock, "drmev", 0, LK_CANRECURSE); 1070a2fdbec6SFrançois Tigeot lockinit(&dev->struct_mutex, "drmslk", 0, LK_CANRECURSE); 1071b3705d71SHasso Tepper 10726f486c69SFrançois Tigeot error = drm_load(dev); 10736f486c69SFrançois Tigeot if (error) 10746f486c69SFrançois Tigeot goto error; 10757f3c3d6fSHasso Tepper 107679f713b0SFrançois Tigeot error = drm_create_cdevs(kdev); 107779f713b0SFrançois Tigeot 10786f486c69SFrançois Tigeot error: 10796f486c69SFrançois Tigeot return (error); 10806f486c69SFrançois Tigeot } 10816f486c69SFrançois Tigeot 108279f713b0SFrançois Tigeot int 108379f713b0SFrançois Tigeot drm_create_cdevs(device_t kdev) 108479f713b0SFrançois Tigeot { 108579f713b0SFrançois Tigeot struct drm_device *dev; 108679f713b0SFrançois Tigeot int error, unit; 108779f713b0SFrançois Tigeot 108879f713b0SFrançois Tigeot unit = device_get_unit(kdev); 108979f713b0SFrançois Tigeot dev = device_get_softc(kdev); 109079f713b0SFrançois Tigeot 109179f713b0SFrançois Tigeot dev->devnode = make_dev(&drm_cdevsw, unit, DRM_DEV_UID, DRM_DEV_GID, 109279f713b0SFrançois Tigeot DRM_DEV_MODE, "dri/card%d", unit); 109379f713b0SFrançois Tigeot error = 0; 109479f713b0SFrançois Tigeot if (error == 0) 109579f713b0SFrançois Tigeot dev->devnode->si_drv1 = dev; 109679f713b0SFrançois Tigeot return (error); 109779f713b0SFrançois Tigeot } 109879f713b0SFrançois Tigeot 10997f3c3d6fSHasso Tepper #ifndef DRM_DEV_NAME 11007f3c3d6fSHasso Tepper #define DRM_DEV_NAME "drm" 11017f3c3d6fSHasso Tepper #endif 11027f3c3d6fSHasso Tepper 11037f3c3d6fSHasso Tepper devclass_t drm_devclass; 11047f3c3d6fSHasso Tepper 11057f3c3d6fSHasso Tepper drm_pci_id_list_t *drm_find_description(int vendor, int device, 11067f3c3d6fSHasso Tepper drm_pci_id_list_t *idlist) 11077f3c3d6fSHasso Tepper { 11087f3c3d6fSHasso Tepper int i = 0; 11097f3c3d6fSHasso Tepper 11107f3c3d6fSHasso Tepper for (i = 0; idlist[i].vendor != 0; i++) { 11117f3c3d6fSHasso Tepper if ((idlist[i].vendor == vendor) && 1112b3705d71SHasso Tepper ((idlist[i].device == device) || 1113b3705d71SHasso Tepper (idlist[i].device == 0))) { 11147f3c3d6fSHasso Tepper return &idlist[i]; 11157f3c3d6fSHasso Tepper } 11167f3c3d6fSHasso Tepper } 11177f3c3d6fSHasso Tepper return NULL; 11187f3c3d6fSHasso Tepper } 11197f3c3d6fSHasso Tepper 1120b3705d71SHasso Tepper static int drm_load(struct drm_device *dev) 11217f3c3d6fSHasso Tepper { 11227f3c3d6fSHasso Tepper int i, retcode; 11237f3c3d6fSHasso Tepper 11247f3c3d6fSHasso Tepper DRM_DEBUG("\n"); 11257f3c3d6fSHasso Tepper 1126f599cd46SFrançois Tigeot INIT_LIST_HEAD(&dev->maplist); 11277f3c3d6fSHasso Tepper 11287f3c3d6fSHasso Tepper drm_sysctl_init(dev); 11291610a1a0SFrançois Tigeot INIT_LIST_HEAD(&dev->filelist); 11307f3c3d6fSHasso Tepper 11317f3c3d6fSHasso Tepper dev->counters = 6; 11327f3c3d6fSHasso Tepper dev->types[0] = _DRM_STAT_LOCK; 11337f3c3d6fSHasso Tepper dev->types[1] = _DRM_STAT_OPENS; 11347f3c3d6fSHasso Tepper dev->types[2] = _DRM_STAT_CLOSES; 11357f3c3d6fSHasso Tepper dev->types[3] = _DRM_STAT_IOCTLS; 11367f3c3d6fSHasso Tepper dev->types[4] = _DRM_STAT_LOCKS; 11377f3c3d6fSHasso Tepper dev->types[5] = _DRM_STAT_UNLOCKS; 11387f3c3d6fSHasso Tepper 1139c6f73aabSFrançois Tigeot for (i = 0; i < ARRAY_SIZE(dev->counts); i++) 11407f3c3d6fSHasso Tepper atomic_set(&dev->counts[i], 0); 11417f3c3d6fSHasso Tepper 11425718399fSFrançois Tigeot INIT_LIST_HEAD(&dev->vblank_event_list); 11437f3c3d6fSHasso Tepper 114453e4e524Szrj if (drm_core_check_feature(dev, DRIVER_USE_AGP)) { 1145e5411345Szrj if (drm_pci_device_is_agp(dev)) 1146e5411345Szrj dev->agp = drm_agp_init(dev); 11477f3c3d6fSHasso Tepper } 11487f3c3d6fSHasso Tepper 11495718399fSFrançois Tigeot if (dev->driver->driver_features & DRIVER_GEM) { 11505718399fSFrançois Tigeot retcode = drm_gem_init(dev); 11515718399fSFrançois Tigeot if (retcode != 0) { 11525718399fSFrançois Tigeot DRM_ERROR("Cannot initialize graphics execution " 11535718399fSFrançois Tigeot "manager (GEM)\n"); 11545718399fSFrançois Tigeot goto error1; 11555718399fSFrançois Tigeot } 11565718399fSFrançois Tigeot } 11575718399fSFrançois Tigeot 11585718399fSFrançois Tigeot if (dev->driver->load != NULL) { 11595718399fSFrançois Tigeot DRM_LOCK(dev); 11605718399fSFrançois Tigeot /* Shared code returns -errno. */ 11615718399fSFrançois Tigeot retcode = -dev->driver->load(dev, 11625718399fSFrançois Tigeot dev->id_entry->driver_private); 1163fb572d17SFrançois Tigeot if (pci_enable_busmaster(dev->dev->bsddev)) 11645718399fSFrançois Tigeot DRM_ERROR("Request to enable bus-master failed.\n"); 11655718399fSFrançois Tigeot DRM_UNLOCK(dev); 11665718399fSFrançois Tigeot if (retcode != 0) 11676f486c69SFrançois Tigeot goto error1; 11685718399fSFrançois Tigeot } 11695718399fSFrançois Tigeot 11707f3c3d6fSHasso Tepper DRM_INFO("Initialized %s %d.%d.%d %s\n", 1171b3705d71SHasso Tepper dev->driver->name, 1172b3705d71SHasso Tepper dev->driver->major, 1173b3705d71SHasso Tepper dev->driver->minor, 1174b3705d71SHasso Tepper dev->driver->patchlevel, 1175b3705d71SHasso Tepper dev->driver->date); 11767f3c3d6fSHasso Tepper 11777f3c3d6fSHasso Tepper return 0; 11787f3c3d6fSHasso Tepper 11795718399fSFrançois Tigeot error1: 11806f486c69SFrançois Tigeot drm_gem_destroy(dev); 11817f3c3d6fSHasso Tepper drm_sysctl_cleanup(dev); 11825718399fSFrançois Tigeot DRM_LOCK(dev); 11837f3c3d6fSHasso Tepper drm_lastclose(dev); 11845718399fSFrançois Tigeot DRM_UNLOCK(dev); 11855718399fSFrançois Tigeot if (dev->devnode != NULL) 11867f3c3d6fSHasso Tepper destroy_dev(dev->devnode); 1187b3705d71SHasso Tepper 11885718399fSFrançois Tigeot lockuninit(&dev->vbl_lock); 11895718399fSFrançois Tigeot lockuninit(&dev->dev_lock); 11905718399fSFrançois Tigeot lockuninit(&dev->event_lock); 1191a2fdbec6SFrançois Tigeot lockuninit(&dev->struct_mutex); 1192b3705d71SHasso Tepper 11937f3c3d6fSHasso Tepper return retcode; 11947f3c3d6fSHasso Tepper } 11957f3c3d6fSHasso Tepper 11963994a83eSMarkus Pfeiffer /* 11973994a83eSMarkus Pfeiffer * Stub is needed for devfs 11983994a83eSMarkus Pfeiffer */ 11992c845b81SSimon Schubert int drm_close(struct dev_close_args *ap) 12007f3c3d6fSHasso Tepper { 12013994a83eSMarkus Pfeiffer return 0; 12023994a83eSMarkus Pfeiffer } 12037f3c3d6fSHasso Tepper 1204d4d73b30SFrançois Tigeot /* XXX: this is supposed to be drm_release() */ 120579f713b0SFrançois Tigeot void drm_cdevpriv_dtor(void *cd) 120679f713b0SFrançois Tigeot { 120779f713b0SFrançois Tigeot struct drm_file *file_priv = cd; 120879f713b0SFrançois Tigeot struct drm_device *dev = file_priv->dev; 120979f713b0SFrançois Tigeot 121079f713b0SFrançois Tigeot DRM_DEBUG("open_count = %d\n", dev->open_count); 121179f713b0SFrançois Tigeot 121279f713b0SFrançois Tigeot DRM_LOCK(dev); 121379f713b0SFrançois Tigeot 121479f713b0SFrançois Tigeot if (dev->driver->preclose != NULL) 121579f713b0SFrançois Tigeot dev->driver->preclose(dev, file_priv); 121679f713b0SFrançois Tigeot 121779f713b0SFrançois Tigeot /* ======================================================== 121879f713b0SFrançois Tigeot * Begin inline drm_release 121979f713b0SFrançois Tigeot */ 122079f713b0SFrançois Tigeot 122179f713b0SFrançois Tigeot DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", 122279f713b0SFrançois Tigeot DRM_CURRENTPID, (long)dev->dev, dev->open_count); 122379f713b0SFrançois Tigeot 122479f713b0SFrançois Tigeot if (dev->driver->driver_features & DRIVER_GEM) 122579f713b0SFrançois Tigeot drm_gem_release(dev, file_priv); 122679f713b0SFrançois Tigeot 1227d4d73b30SFrançois Tigeot if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) 12281b13d190SFrançois Tigeot drm_legacy_reclaim_buffers(dev, file_priv); 122979f713b0SFrançois Tigeot 123079f713b0SFrançois Tigeot funsetown(&dev->buf_sigio); 123179f713b0SFrançois Tigeot 123279f713b0SFrançois Tigeot if (dev->driver->postclose != NULL) 123379f713b0SFrançois Tigeot dev->driver->postclose(dev, file_priv); 123479f713b0SFrançois Tigeot list_del(&file_priv->lhead); 123579f713b0SFrançois Tigeot 123679f713b0SFrançois Tigeot 123779f713b0SFrançois Tigeot /* ======================================================== 123879f713b0SFrançois Tigeot * End inline drm_release 123979f713b0SFrançois Tigeot */ 124079f713b0SFrançois Tigeot 124179f713b0SFrançois Tigeot atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); 1242fb572d17SFrançois Tigeot device_unbusy(dev->dev->bsddev); 124379f713b0SFrançois Tigeot if (--dev->open_count == 0) { 12448621f407SFrançois Tigeot drm_lastclose(dev); 124579f713b0SFrançois Tigeot } 124679f713b0SFrançois Tigeot 124779f713b0SFrançois Tigeot DRM_UNLOCK(dev); 124879f713b0SFrançois Tigeot } 124979f713b0SFrançois Tigeot 12505718399fSFrançois Tigeot int 12515718399fSFrançois Tigeot drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx, 12525718399fSFrançois Tigeot struct sysctl_oid *top) 12535718399fSFrançois Tigeot { 12545718399fSFrançois Tigeot struct sysctl_oid *oid; 12555718399fSFrançois Tigeot 12565718399fSFrançois Tigeot ksnprintf(dev->busid_str, sizeof(dev->busid_str), 12575718399fSFrançois Tigeot "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus, 12585718399fSFrançois Tigeot dev->pci_slot, dev->pci_func); 12595718399fSFrançois Tigeot oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid", 12605718399fSFrançois Tigeot CTLFLAG_RD, dev->busid_str, 0, NULL); 12615718399fSFrançois Tigeot if (oid == NULL) 12625718399fSFrançois Tigeot return (ENOMEM); 12635718399fSFrançois Tigeot dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0; 12645718399fSFrançois Tigeot oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO, 12655718399fSFrançois Tigeot "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL); 12665718399fSFrançois Tigeot if (oid == NULL) 12675718399fSFrançois Tigeot return (ENOMEM); 12685718399fSFrançois Tigeot 12695718399fSFrançois Tigeot return (0); 12705718399fSFrançois Tigeot } 12715718399fSFrançois Tigeot 12725718399fSFrançois Tigeot int 12735718399fSFrançois Tigeot drm_mmap_single(struct dev_mmap_single_args *ap) 12745718399fSFrançois Tigeot { 127579f713b0SFrançois Tigeot struct drm_device *dev; 12765718399fSFrançois Tigeot struct cdev *kdev = ap->a_head.a_dev; 12775718399fSFrançois Tigeot vm_ooffset_t *offset = ap->a_offset; 12785718399fSFrançois Tigeot vm_size_t size = ap->a_size; 12795718399fSFrançois Tigeot struct vm_object **obj_res = ap->a_object; 12805718399fSFrançois Tigeot int nprot = ap->a_nprot; 12815718399fSFrançois Tigeot 128279f713b0SFrançois Tigeot dev = drm_get_device_from_kdev(kdev); 12836f486c69SFrançois Tigeot if (dev->drm_ttm_bdev != NULL) { 1284a34b4168SMatthew Dillon return (ttm_bo_mmap_single(dev, offset, size, obj_res, nprot)); 12856f486c69SFrançois Tigeot } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) { 12866f486c69SFrançois Tigeot return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot)); 12875718399fSFrançois Tigeot } else { 12885718399fSFrançois Tigeot return (ENODEV); 12895718399fSFrançois Tigeot } 12905718399fSFrançois Tigeot } 12915718399fSFrançois Tigeot 12926f486c69SFrançois Tigeot static int 12936f486c69SFrançois Tigeot drm_core_init(void *arg) 12946f486c69SFrançois Tigeot { 12956f486c69SFrançois Tigeot 12966f486c69SFrançois Tigeot drm_global_init(); 12976f486c69SFrançois Tigeot 12986f486c69SFrançois Tigeot DRM_INFO("Initialized %s %d.%d.%d %s\n", 12996f486c69SFrançois Tigeot CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); 13006f486c69SFrançois Tigeot return 0; 13016f486c69SFrançois Tigeot } 13026f486c69SFrançois Tigeot 13036f486c69SFrançois Tigeot static void 13046f486c69SFrançois Tigeot drm_core_exit(void *arg) 13056f486c69SFrançois Tigeot { 13066f486c69SFrançois Tigeot 13076f486c69SFrançois Tigeot drm_global_release(); 13086f486c69SFrançois Tigeot } 13096f486c69SFrançois Tigeot 13106f486c69SFrançois Tigeot SYSINIT(drm_register, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 13116f486c69SFrançois Tigeot drm_core_init, NULL); 13126f486c69SFrançois Tigeot SYSUNINIT(drm_unregister, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 13136f486c69SFrançois Tigeot drm_core_exit, NULL); 13146f486c69SFrançois Tigeot 131524edb884SFrançois Tigeot 131624edb884SFrançois Tigeot #include <linux/dmi.h> 131724edb884SFrançois Tigeot 13185718399fSFrançois Tigeot /* 13195718399fSFrançois Tigeot * Check if dmi_system_id structure matches system DMI data 13205718399fSFrançois Tigeot */ 13215718399fSFrançois Tigeot static bool 13225718399fSFrançois Tigeot dmi_found(const struct dmi_system_id *dsi) 13235718399fSFrançois Tigeot { 13245718399fSFrançois Tigeot int i, slot; 13255718399fSFrançois Tigeot bool found = false; 13265718399fSFrançois Tigeot char *sys_vendor, *board_vendor, *product_name, *board_name; 13275718399fSFrançois Tigeot 13285718399fSFrançois Tigeot sys_vendor = kgetenv("smbios.system.maker"); 13295718399fSFrançois Tigeot board_vendor = kgetenv("smbios.planar.maker"); 13305718399fSFrançois Tigeot product_name = kgetenv("smbios.system.product"); 13315718399fSFrançois Tigeot board_name = kgetenv("smbios.planar.product"); 13325718399fSFrançois Tigeot 13335718399fSFrançois Tigeot for (i = 0; i < NELEM(dsi->matches); i++) { 13345718399fSFrançois Tigeot slot = dsi->matches[i].slot; 13355718399fSFrançois Tigeot switch (slot) { 13365718399fSFrançois Tigeot case DMI_NONE: 13375718399fSFrançois Tigeot break; 13385718399fSFrançois Tigeot case DMI_SYS_VENDOR: 13395718399fSFrançois Tigeot if (sys_vendor != NULL && 13405718399fSFrançois Tigeot !strcmp(sys_vendor, dsi->matches[i].substr)) 13415718399fSFrançois Tigeot break; 13425718399fSFrançois Tigeot else 13435718399fSFrançois Tigeot goto done; 13445718399fSFrançois Tigeot case DMI_BOARD_VENDOR: 13455718399fSFrançois Tigeot if (board_vendor != NULL && 13465718399fSFrançois Tigeot !strcmp(board_vendor, dsi->matches[i].substr)) 13475718399fSFrançois Tigeot break; 13485718399fSFrançois Tigeot else 13495718399fSFrançois Tigeot goto done; 13505718399fSFrançois Tigeot case DMI_PRODUCT_NAME: 13515718399fSFrançois Tigeot if (product_name != NULL && 13525718399fSFrançois Tigeot !strcmp(product_name, dsi->matches[i].substr)) 13535718399fSFrançois Tigeot break; 13545718399fSFrançois Tigeot else 13555718399fSFrançois Tigeot goto done; 13565718399fSFrançois Tigeot case DMI_BOARD_NAME: 13575718399fSFrançois Tigeot if (board_name != NULL && 13585718399fSFrançois Tigeot !strcmp(board_name, dsi->matches[i].substr)) 13595718399fSFrançois Tigeot break; 13605718399fSFrançois Tigeot else 13615718399fSFrançois Tigeot goto done; 13625718399fSFrançois Tigeot default: 13635718399fSFrançois Tigeot goto done; 13645718399fSFrançois Tigeot } 13655718399fSFrançois Tigeot } 13665718399fSFrançois Tigeot found = true; 13675718399fSFrançois Tigeot 13685718399fSFrançois Tigeot done: 13695718399fSFrançois Tigeot if (sys_vendor != NULL) 13705718399fSFrançois Tigeot kfreeenv(sys_vendor); 13715718399fSFrançois Tigeot if (board_vendor != NULL) 13725718399fSFrançois Tigeot kfreeenv(board_vendor); 13735718399fSFrançois Tigeot if (product_name != NULL) 13745718399fSFrançois Tigeot kfreeenv(product_name); 13755718399fSFrançois Tigeot if (board_name != NULL) 13765718399fSFrançois Tigeot kfreeenv(board_name); 13775718399fSFrançois Tigeot 13785718399fSFrançois Tigeot return found; 13795718399fSFrançois Tigeot } 13805718399fSFrançois Tigeot 1381be348e9fSFrançois Tigeot int dmi_check_system(const struct dmi_system_id *sysid) 13825718399fSFrançois Tigeot { 13835718399fSFrançois Tigeot const struct dmi_system_id *dsi; 13845718399fSFrançois Tigeot int num = 0; 13855718399fSFrançois Tigeot 13865718399fSFrançois Tigeot for (dsi = sysid; dsi->matches[0].slot != 0 ; dsi++) { 13875718399fSFrançois Tigeot if (dmi_found(dsi)) { 13885718399fSFrançois Tigeot num++; 13895718399fSFrançois Tigeot if (dsi->callback && dsi->callback(dsi)) 13905718399fSFrançois Tigeot break; 13915718399fSFrançois Tigeot } 13925718399fSFrançois Tigeot } 13935718399fSFrançois Tigeot return (num); 13945718399fSFrançois Tigeot } 1395